1 | <?php
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2 | /**
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3 | * WordPress DB Class
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4 | *
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5 | * Original code from {@link http://php.justinvincent.com Justin Vincent (justin@visunet.ie)}
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6 | *
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7 | * @package WordPress
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8 | * @subpackage Database
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9 | * @since 0.71
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10 | */
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11 |
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12 | /**
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13 | * @since 0.71
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14 | */
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15 | define('EZSQL_VERSION', 'WP1.25');
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16 |
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17 | /**
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18 | * @since 0.71
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19 | */
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20 | define('OBJECT', 'OBJECT', true);
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21 |
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22 | /**
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23 | * @since {@internal Version Unknown}}
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24 | */
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25 | define('OBJECT_K', 'OBJECT_K', false);
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26 |
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27 | /**
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28 | * @since 0.71
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29 | */
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30 | define('ARRAY_A', 'ARRAY_A', false);
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31 |
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32 | /**
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33 | * @since 0.71
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34 | */
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35 | define('ARRAY_N', 'ARRAY_N', false);
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36 |
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37 | /**
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38 | * WordPress Database Access Abstraction Object
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39 | *
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40 | * It is possible to replace this class with your own
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41 | * by setting the $wpdb global variable in wp-content/db.php
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42 | * file with your class. You can name it wpdb also, since
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43 | * this file will not be included, if the other file is
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44 | * available.
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45 | *
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46 | * @link http://codex.wordpress.org/Function_Reference/wpdb_Class
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47 | *
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48 | * @package WordPress
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49 | * @subpackage Database
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50 | * @since 0.71
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51 | * @final
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52 | */
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53 | class wpdb {
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54 |
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55 | /**
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56 | * Whether to show SQL/DB errors
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57 | *
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58 | * @since 0.71
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59 | * @access private
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60 | * @var bool
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61 | */
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62 | var $show_errors = false;
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63 |
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64 | /**
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65 | * Whether to suppress errors during the DB bootstrapping.
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66 | *
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67 | * @access private
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68 | * @since {@internal Version Unknown}}
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69 | * @var bool
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70 | */
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71 | var $suppress_errors = false;
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72 |
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73 | /**
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74 | * The last error during query.
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75 | *
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76 | * @since {@internal Version Unknown}}
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77 | * @var string
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78 | */
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79 | var $last_error = '';
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80 |
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81 | /**
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82 | * Amount of queries made
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83 | *
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84 | * @since 1.2.0
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85 | * @access private
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86 | * @var int
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87 | */
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88 | var $num_queries = 0;
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89 |
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90 | /**
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91 | * Saved result of the last query made
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92 | *
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93 | * @since 1.2.0
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94 | * @access private
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95 | * @var array
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96 | */
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97 | var $last_query;
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98 |
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99 | /**
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100 | * Saved info on the table column
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101 | *
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102 | * @since 1.2.0
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103 | * @access private
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104 | * @var array
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105 | */
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106 | var $col_info;
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107 |
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108 | /**
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109 | * Saved queries that were executed
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110 | *
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111 | * @since 1.5.0
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112 | * @access private
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113 | * @var array
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114 | */
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115 | var $queries;
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116 |
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117 | /**
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118 | * WordPress table prefix
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119 | *
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120 | * You can set this to have multiple WordPress installations
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121 | * in a single database. The second reason is for possible
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122 | * security precautions.
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123 | *
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124 | * @since 0.71
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125 | * @access private
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126 | * @var string
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127 | */
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128 | var $prefix = '';
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129 |
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130 | /**
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131 | * Whether the database queries are ready to start executing.
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132 | *
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133 | * @since 2.5.0
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134 | * @access private
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135 | * @var bool
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136 | */
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137 | var $ready = false;
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138 |
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139 | /**
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140 | * WordPress Posts table
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141 | *
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142 | * @since 1.5.0
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143 | * @access public
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144 | * @var string
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145 | */
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146 | var $posts;
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147 |
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148 | /**
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149 | * WordPress Users table
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150 | *
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151 | * @since 1.5.0
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152 | * @access public
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153 | * @var string
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154 | */
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155 | var $users;
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156 |
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157 | /**
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158 | * WordPress Categories table
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159 | *
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160 | * @since 1.5.0
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161 | * @access public
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162 | * @var string
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163 | */
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164 | var $categories;
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165 |
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166 | /**
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167 | * WordPress Post to Category table
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168 | *
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169 | * @since 1.5.0
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170 | * @access public
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171 | * @var string
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172 | */
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173 | var $post2cat;
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174 |
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175 | /**
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176 | * WordPress Comments table
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177 | *
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178 | * @since 1.5.0
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179 | * @access public
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180 | * @var string
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181 | */
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182 | var $comments;
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183 |
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184 | /**
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185 | * WordPress Links table
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186 | *
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187 | * @since 1.5.0
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188 | * @access public
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189 | * @var string
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190 | */
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191 | var $links;
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192 |
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193 | /**
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194 | * WordPress Options table
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195 | *
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196 | * @since 1.5.0
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197 | * @access public
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198 | * @var string
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199 | */
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200 | var $options;
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201 |
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202 | /**
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203 | * WordPress Post Metadata table
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204 | *
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205 | * @since {@internal Version Unknown}}
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206 | * @access public
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207 | * @var string
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208 | */
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209 | var $postmeta;
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210 |
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211 | /**
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212 | * WordPress User Metadata table
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213 | *
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214 | * @since 2.3.0
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215 | * @access public
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216 | * @var string
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217 | */
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218 | var $usermeta;
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219 |
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220 | /**
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221 | * WordPress Terms table
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222 | *
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223 | * @since 2.3.0
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224 | * @access public
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225 | * @var string
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226 | */
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227 | var $terms;
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228 |
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229 | /**
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230 | * WordPress Term Taxonomy table
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231 | *
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232 | * @since 2.3.0
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233 | * @access public
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234 | * @var string
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235 | */
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236 | var $term_taxonomy;
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237 |
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238 | /**
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239 | * WordPress Term Relationships table
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240 | *
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241 | * @since 2.3.0
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242 | * @access public
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243 | * @var string
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244 | */
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245 | var $term_relationships;
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246 |
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247 | /**
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248 | * List of WordPress tables
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249 | *
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250 | * @since {@internal Version Unknown}}
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251 | * @access private
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252 | * @var array
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253 | */
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254 | var $tables = array('users', 'usermeta', 'posts', 'categories', 'post2cat', 'comments', 'links', 'link2cat', 'options',
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255 | 'postmeta', 'terms', 'term_taxonomy', 'term_relationships');
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256 |
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257 | /**
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258 | * Format specifiers for DB columns. Columns not listed here default to %s. Initialized in wp-settings.php.
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259 | *
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260 | * Keys are colmn names, values are format types: 'ID' => '%d'
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261 | *
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262 | * @since 2.8.0
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263 | * @see wpdb:prepare()
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264 | * @see wpdb:insert()
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265 | * @see wpdb:update()
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266 | * @access public
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267 | * @war array
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268 | */
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269 | var $field_types = array();
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270 |
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271 | /**
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272 | * Database table columns charset
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273 | *
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274 | * @since 2.2.0
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275 | * @access public
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276 | * @var string
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277 | */
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278 | var $charset;
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279 |
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280 | /**
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281 | * Database table columns collate
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282 | *
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283 | * @since 2.2.0
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284 | * @access public
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285 | * @var string
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286 | */
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287 | var $collate;
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288 |
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289 | /**
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290 | * Whether to use mysql_real_escape_string
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291 | *
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292 | * @since 2.8.0
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293 | * @access public
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294 | * @var bool
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295 | */
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296 | var $real_escape = false;
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297 |
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298 | /**
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299 | * Connects to the database server and selects a database
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300 | *
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301 | * PHP4 compatibility layer for calling the PHP5 constructor.
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302 | *
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303 | * @uses wpdb::__construct() Passes parameters and returns result
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304 | * @since 0.71
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305 | *
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306 | * @param string $dbuser MySQL database user
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307 | * @param string $dbpassword MySQL database password
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308 | * @param string $dbname MySQL database name
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309 | * @param string $dbhost MySQL database host
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310 | */
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311 | function wpdb($dbuser, $dbpassword, $dbname, $dbhost) {
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312 | return $this->__construct($dbuser, $dbpassword, $dbname, $dbhost);
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313 | }
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314 |
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315 | /**
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316 | * Connects to the database server and selects a database
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317 | *
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318 | * PHP5 style constructor for compatibility with PHP5. Does
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319 | * the actual setting up of the class properties and connection
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320 | * to the database.
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321 | *
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322 | * @since 2.0.8
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323 | *
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324 | * @param string $dbuser MySQL database user
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325 | * @param string $dbpassword MySQL database password
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326 | * @param string $dbname MySQL database name
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327 | * @param string $dbhost MySQL database host
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328 | */
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329 | function __construct($dbuser, $dbpassword, $dbname, $dbhost) {
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330 | register_shutdown_function(array(&$this, "__destruct"));
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331 |
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332 | if ( defined('WP_DEBUG') and WP_DEBUG == true )
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333 | $this->show_errors();
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334 |
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335 | if ( defined('DB_CHARSET') )
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336 | $this->charset = DB_CHARSET;
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337 |
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338 | if ( defined('DB_COLLATE') )
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339 | $this->collate = DB_COLLATE;
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340 |
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341 | $this->dbh = @mysql_connect($dbhost, $dbuser, $dbpassword, true);
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342 | if (!$this->dbh) {
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343 | $this->bail(sprintf(/*WP_I18N_DB_CONN_ERROR*/'
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344 | <h1>Errore nello stabilire una connessione al database</h1>
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345 | <p>Ciò significa che le informazioni sul nome utente o sulla password presenti nel file <code>wp-config.php</code> non sono corrette o che non Ú possibile contattare il server del database a <code>%s</code>. Il che potrebbe voler dire che il database server del fornitore di hosting non Ú attivo.</p>
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346 | <ul>
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347 | <li>Si Ú sicuri di disporre del nome utente e della password corretti?</li>
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348 | <li>Si Ú sicuri di aver digitato correttamente il nome dell\'host?</li>
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349 | <li>Si Ú sicuri che il server del database sia funzionante?</li>
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350 | </ul>
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351 | <p>Nel caso non si abbia certezza sul significato di questi termini Ú opportuno contattare il proprio host. Se si ha bisogno di ulteriore aiuto Ú sempre possibile visitare il <a href=\'http://www.wordpress-it.it/forumt/\'>Forum di supporto italiano su WordPress</a>.</p>
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352 | '/*/WP_I18N_DB_CONN_ERROR*/, $dbhost));
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353 | return;
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354 | }
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355 |
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356 | $this->ready = true;
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357 |
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358 | if ( $this->has_cap( 'collation' ) ) {
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359 | if ( !empty($this->charset) ) {
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360 | if ( function_exists('mysql_set_charset') ) {
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361 | mysql_set_charset($this->charset, $this->dbh);
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362 | $this->real_escape = true;
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363 | } else {
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364 | $collation_query = "SET NAMES '{$this->charset}'";
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365 | if ( !empty($this->collate) )
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366 | $collation_query .= " COLLATE '{$this->collate}'";
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367 | $this->query($collation_query);
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368 | }
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369 | }
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370 | }
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371 |
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372 | $this->select($dbname);
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373 | }
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374 |
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375 | /**
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376 | * PHP5 style destructor and will run when database object is destroyed.
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377 | *
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378 | * @since 2.0.8
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379 | *
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380 | * @return bool Always true
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381 | */
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382 | function __destruct() {
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383 | return true;
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384 | }
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385 |
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386 | /**
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387 | * Sets the table prefix for the WordPress tables.
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388 | *
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389 | * Also allows for the CUSTOM_USER_TABLE and CUSTOM_USER_META_TABLE to
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390 | * override the WordPress users and usersmeta tables that would otherwise be determined by the $prefix.
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391 | *
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392 | * @since 2.5.0
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393 | *
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394 | * @param string $prefix Alphanumeric name for the new prefix.
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395 | * @return string|WP_Error Old prefix or WP_Error on error
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396 | */
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397 | function set_prefix($prefix) {
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398 |
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399 | if ( preg_match('|[^a-z0-9_]|i', $prefix) )
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400 | return new WP_Error('invalid_db_prefix', /*WP_I18N_DB_BAD_PREFIX*/'Prefisso database non valido'/*/WP_I18N_DB_BAD_PREFIX*/);
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401 |
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402 | $old_prefix = $this->prefix;
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403 | $this->prefix = $prefix;
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404 |
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405 | foreach ( (array) $this->tables as $table )
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406 | $this->$table = $this->prefix . $table;
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407 |
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408 | if ( defined('CUSTOM_USER_TABLE') )
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409 | $this->users = CUSTOM_USER_TABLE;
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410 |
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411 | if ( defined('CUSTOM_USER_META_TABLE') )
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412 | $this->usermeta = CUSTOM_USER_META_TABLE;
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413 |
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414 | return $old_prefix;
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415 | }
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416 |
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417 | /**
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418 | * Selects a database using the current database connection.
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419 | *
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420 | * The database name will be changed based on the current database
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421 | * connection. On failure, the execution will bail and display an DB error.
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422 | *
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423 | * @since 0.71
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424 | *
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425 | * @param string $db MySQL database name
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426 | * @return null Always null.
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427 | */
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428 | function select($db) {
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429 | if (!@mysql_select_db($db, $this->dbh)) {
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430 | $this->ready = false;
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431 | $this->bail(sprintf(/*WP_I18N_DB_SELECT_DB*/'
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432 | <h1>Impossibile selesionare il database</h1>
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433 | <p>È stato possibile connettersi al server del database (il che significa che il nome utente e la password sono ok) ma non Ú stato possibile selezionare il database <code>%1$s</code>.</p>
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434 | <ul>
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435 | <li>Si Ú certi che esista?</li>
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436 | <li>L\'utente <code>%2$s</code> ha i permessi di usare il database <code>%1$s</code>?</li>
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437 | <li>Su alcuni sistemi il nome del database va fatto precedere dal nome utente, così da avere un formato simile a username_wordpress. Potrebbe essere questo il problema?</li>
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438 | </ul>
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439 | <p>Se non si sa come impostare un database sarebbe opportuno <strong>contattare il proprio host</strong>. Se tutto questo fallisce Ú possibile trovare aiuto sul <a href=\'http://www.wordpress-it.it/forumt/\'>Forum di supporto italiano su WordPress</a>.</p>'/*/WP_I18N_DB_SELECT_DB*/, $db, DB_USER));
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440 | return;
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441 | }
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442 | }
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443 |
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444 | function _weak_escape($string) {
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445 | return addslashes($string);
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446 | }
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447 |
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448 | function _real_escape($string) {
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449 | if ( $this->dbh && $this->real_escape )
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450 | return mysql_real_escape_string( $string, $this->dbh );
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451 | else
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452 | return addslashes( $string );
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453 | }
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454 |
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455 | function _escape($data) {
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456 | if ( is_array($data) ) {
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457 | foreach ( (array) $data as $k => $v ) {
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458 | if ( is_array($v) )
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459 | $data[$k] = $this->_escape( $v );
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460 | else
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461 | $data[$k] = $this->_real_escape( $v );
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462 | }
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463 | } else {
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464 | $data = $this->_real_escape( $data );
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465 | }
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466 |
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467 | return $data;
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468 | }
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469 |
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470 | /**
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471 | * Escapes content for insertion into the database using addslashes(), for security
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472 | *
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473 | * @since 0.71
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474 | *
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475 | * @param string|array $data
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476 | * @return string query safe string
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477 | */
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478 | function escape($data) {
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479 | if ( is_array($data) ) {
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480 | foreach ( (array) $data as $k => $v ) {
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481 | if ( is_array($v) )
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482 | $data[$k] = $this->escape( $v );
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483 | else
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484 | $data[$k] = $this->_weak_escape( $v );
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485 | }
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486 | } else {
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487 | $data = $this->_weak_escape( $data );
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488 | }
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489 |
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490 | return $data;
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491 | }
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492 |
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493 | /**
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494 | * Escapes content by reference for insertion into the database, for security
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495 | *
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496 | * @since 2.3.0
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497 | *
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498 | * @param string $s
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499 | */
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500 | function escape_by_ref(&$string) {
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501 | $string = $this->_real_escape( $string );
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502 | }
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503 |
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504 | /**
|
---|
505 | * Prepares a SQL query for safe execution. Uses sprintf()-like syntax.
|
---|
506 | *
|
---|
507 | * This function only supports a small subset of the sprintf syntax; it only supports %d (decimal number), %s (string).
|
---|
508 | * Does not support sign, padding, alignment, width or precision specifiers.
|
---|
509 | * Does not support argument numbering/swapping.
|
---|
510 | *
|
---|
511 | * May be called like {@link http://php.net/sprintf sprintf()} or like {@link http://php.net/vsprintf vsprintf()}.
|
---|
512 | *
|
---|
513 | * Both %d and %s should be left unquoted in the query string.
|
---|
514 | *
|
---|
515 | * <code>
|
---|
516 | * wpdb::prepare( "SELECT * FROM `table` WHERE `column` = %s AND `field` = %d", "foo", 1337 )
|
---|
517 | * </code>
|
---|
518 | *
|
---|
519 | * @link http://php.net/sprintf Description of syntax.
|
---|
520 | * @since 2.3.0
|
---|
521 | *
|
---|
522 | * @param string $query Query statement with sprintf()-like placeholders
|
---|
523 | * @param array|mixed $args The array of variables to substitute into the query's placeholders if being called like {@link http://php.net/vsprintf vsprintf()}, or the first variable to substitute into the query's placeholders if being called like {@link http://php.net/sprintf sprintf()}.
|
---|
524 | * @param mixed $args,... further variables to substitute into the query's placeholders if being called like {@link http://php.net/sprintf sprintf()}.
|
---|
525 | * @return null|string Sanitized query string
|
---|
526 | */
|
---|
527 | function prepare($query = null) { // ( $query, *$args )
|
---|
528 | if ( is_null( $query ) )
|
---|
529 | return;
|
---|
530 | $args = func_get_args();
|
---|
531 | array_shift($args);
|
---|
532 | // If args were passed as an array (as in vsprintf), move them up
|
---|
533 | if ( isset($args[0]) && is_array($args[0]) )
|
---|
534 | $args = $args[0];
|
---|
535 | $query = str_replace("'%s'", '%s', $query); // in case someone mistakenly already singlequoted it
|
---|
536 | $query = str_replace('"%s"', '%s', $query); // doublequote unquoting
|
---|
537 | $query = str_replace('%s', "'%s'", $query); // quote the strings
|
---|
538 | array_walk($args, array(&$this, 'escape_by_ref'));
|
---|
539 | return @vsprintf($query, $args);
|
---|
540 | }
|
---|
541 |
|
---|
542 | /**
|
---|
543 | * Print SQL/DB error.
|
---|
544 | *
|
---|
545 | * @since 0.71
|
---|
546 | * @global array $EZSQL_ERROR Stores error information of query and error string
|
---|
547 | *
|
---|
548 | * @param string $str The error to display
|
---|
549 | * @return bool False if the showing of errors is disabled.
|
---|
550 | */
|
---|
551 | function print_error($str = '') {
|
---|
552 | global $EZSQL_ERROR;
|
---|
553 |
|
---|
554 | if (!$str) $str = mysql_error($this->dbh);
|
---|
555 | $EZSQL_ERROR[] = array ('query' => $this->last_query, 'error_str' => $str);
|
---|
556 |
|
---|
557 | if ( $this->suppress_errors )
|
---|
558 | return false;
|
---|
559 |
|
---|
560 | if ( $caller = $this->get_caller() )
|
---|
561 | $error_str = sprintf(/*WP_I18N_DB_QUERY_ERROR_FULL*/'WordPress errore sul database %1$s per la query %2$s fatta da %3$s'/*/WP_I18N_DB_QUERY_ERROR_FULL*/, $str, $this->last_query, $caller);
|
---|
562 | else
|
---|
563 | $error_str = sprintf(/*WP_I18N_DB_QUERY_ERROR*/'WordPress errore database %1$s per la query %2$s'/*/WP_I18N_DB_QUERY_ERROR*/, $str, $this->last_query);
|
---|
564 |
|
---|
565 | $log_error = true;
|
---|
566 | if ( ! function_exists('error_log') )
|
---|
567 | $log_error = false;
|
---|
568 |
|
---|
569 | $log_file = @ini_get('error_log');
|
---|
570 | if ( !empty($log_file) && ('syslog' != $log_file) && !@is_writable($log_file) )
|
---|
571 | $log_error = false;
|
---|
572 |
|
---|
573 | if ( $log_error )
|
---|
574 | @error_log($error_str, 0);
|
---|
575 |
|
---|
576 | // Is error output turned on or not..
|
---|
577 | if ( !$this->show_errors )
|
---|
578 | return false;
|
---|
579 |
|
---|
580 | $str = htmlspecialchars($str, ENT_QUOTES);
|
---|
581 | $query = htmlspecialchars($this->last_query, ENT_QUOTES);
|
---|
582 |
|
---|
583 | // If there is an error then take note of it
|
---|
584 | print "<div id='error'>
|
---|
585 | <p class='wpdberror'><strong>WordPress database error:</strong> [$str]<br />
|
---|
586 | <code>$query</code></p>
|
---|
587 | </div>";
|
---|
588 | }
|
---|
589 |
|
---|
590 | /**
|
---|
591 | * Enables showing of database errors.
|
---|
592 | *
|
---|
593 | * This function should be used only to enable showing of errors.
|
---|
594 | * wpdb::hide_errors() should be used instead for hiding of errors. However,
|
---|
595 | * this function can be used to enable and disable showing of database
|
---|
596 | * errors.
|
---|
597 | *
|
---|
598 | * @since 0.71
|
---|
599 | *
|
---|
600 | * @param bool $show Whether to show or hide errors
|
---|
601 | * @return bool Old value for showing errors.
|
---|
602 | */
|
---|
603 | function show_errors( $show = true ) {
|
---|
604 | $errors = $this->show_errors;
|
---|
605 | $this->show_errors = $show;
|
---|
606 | return $errors;
|
---|
607 | }
|
---|
608 |
|
---|
609 | /**
|
---|
610 | * Disables showing of database errors.
|
---|
611 | *
|
---|
612 | * @since 0.71
|
---|
613 | *
|
---|
614 | * @return bool Whether showing of errors was active or not
|
---|
615 | */
|
---|
616 | function hide_errors() {
|
---|
617 | $show = $this->show_errors;
|
---|
618 | $this->show_errors = false;
|
---|
619 | return $show;
|
---|
620 | }
|
---|
621 |
|
---|
622 | /**
|
---|
623 | * Whether to suppress database errors.
|
---|
624 | *
|
---|
625 | * @param unknown_type $suppress
|
---|
626 | * @return unknown
|
---|
627 | */
|
---|
628 | function suppress_errors( $suppress = true ) {
|
---|
629 | $errors = $this->suppress_errors;
|
---|
630 | $this->suppress_errors = $suppress;
|
---|
631 | return $errors;
|
---|
632 | }
|
---|
633 |
|
---|
634 | /**
|
---|
635 | * Kill cached query results.
|
---|
636 | *
|
---|
637 | * @since 0.71
|
---|
638 | */
|
---|
639 | function flush() {
|
---|
640 | $this->last_result = array();
|
---|
641 | $this->col_info = null;
|
---|
642 | $this->last_query = null;
|
---|
643 | }
|
---|
644 |
|
---|
645 | /**
|
---|
646 | * Perform a MySQL database query, using current database connection.
|
---|
647 | *
|
---|
648 | * More information can be found on the codex page.
|
---|
649 | *
|
---|
650 | * @since 0.71
|
---|
651 | *
|
---|
652 | * @param string $query
|
---|
653 | * @return int|false Number of rows affected/selected or false on error
|
---|
654 | */
|
---|
655 | function query($query) {
|
---|
656 | if ( ! $this->ready )
|
---|
657 | return false;
|
---|
658 |
|
---|
659 | // filter the query, if filters are available
|
---|
660 | // NOTE: some queries are made before the plugins have been loaded, and thus cannot be filtered with this method
|
---|
661 | if ( function_exists('apply_filters') )
|
---|
662 | $query = apply_filters('query', $query);
|
---|
663 |
|
---|
664 | // initialise return
|
---|
665 | $return_val = 0;
|
---|
666 | $this->flush();
|
---|
667 |
|
---|
668 | // Log how the function was called
|
---|
669 | $this->func_call = "\$db->query(\"$query\")";
|
---|
670 |
|
---|
671 | // Keep track of the last query for debug..
|
---|
672 | $this->last_query = $query;
|
---|
673 |
|
---|
674 | // Perform the query via std mysql_query function..
|
---|
675 | if ( defined('SAVEQUERIES') && SAVEQUERIES )
|
---|
676 | $this->timer_start();
|
---|
677 |
|
---|
678 | $this->result = @mysql_query($query, $this->dbh);
|
---|
679 | ++$this->num_queries;
|
---|
680 |
|
---|
681 | if ( defined('SAVEQUERIES') && SAVEQUERIES )
|
---|
682 | $this->queries[] = array( $query, $this->timer_stop(), $this->get_caller() );
|
---|
683 |
|
---|
684 | // If there is an error then take note of it..
|
---|
685 | if ( $this->last_error = mysql_error($this->dbh) ) {
|
---|
686 | $this->print_error();
|
---|
687 | return false;
|
---|
688 | }
|
---|
689 |
|
---|
690 | if ( preg_match("/^\\s*(insert|delete|update|replace|alter) /i",$query) ) {
|
---|
691 | $this->rows_affected = mysql_affected_rows($this->dbh);
|
---|
692 | // Take note of the insert_id
|
---|
693 | if ( preg_match("/^\\s*(insert|replace) /i",$query) ) {
|
---|
694 | $this->insert_id = mysql_insert_id($this->dbh);
|
---|
695 | }
|
---|
696 | // Return number of rows affected
|
---|
697 | $return_val = $this->rows_affected;
|
---|
698 | } else {
|
---|
699 | $i = 0;
|
---|
700 | while ($i < @mysql_num_fields($this->result)) {
|
---|
701 | $this->col_info[$i] = @mysql_fetch_field($this->result);
|
---|
702 | $i++;
|
---|
703 | }
|
---|
704 | $num_rows = 0;
|
---|
705 | while ( $row = @mysql_fetch_object($this->result) ) {
|
---|
706 | $this->last_result[$num_rows] = $row;
|
---|
707 | $num_rows++;
|
---|
708 | }
|
---|
709 |
|
---|
710 | @mysql_free_result($this->result);
|
---|
711 |
|
---|
712 | // Log number of rows the query returned
|
---|
713 | $this->num_rows = $num_rows;
|
---|
714 |
|
---|
715 | // Return number of rows selected
|
---|
716 | $return_val = $this->num_rows;
|
---|
717 | }
|
---|
718 |
|
---|
719 | return $return_val;
|
---|
720 | }
|
---|
721 |
|
---|
722 | /**
|
---|
723 | * Insert a row into a table.
|
---|
724 | *
|
---|
725 | * <code>
|
---|
726 | * wpdb::insert( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( '%s', '%d' ) )
|
---|
727 | * </code>
|
---|
728 | *
|
---|
729 | * @since 2.5.0
|
---|
730 | * @see wpdb::prepare()
|
---|
731 | *
|
---|
732 | * @param string $table table name
|
---|
733 | * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
|
---|
734 | * @param array|string $format (optional) An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data. A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings.
|
---|
735 | * @return int|false The number of rows inserted, or false on error.
|
---|
736 | */
|
---|
737 | function insert($table, $data, $format = null) {
|
---|
738 | $formats = $format = (array) $format;
|
---|
739 | $fields = array_keys($data);
|
---|
740 | $formatted_fields = array();
|
---|
741 | foreach ( $fields as $field ) {
|
---|
742 | if ( !empty($format) )
|
---|
743 | $form = ( $form = array_shift($formats) ) ? $form : $format[0];
|
---|
744 | elseif ( isset($this->field_types[$field]) )
|
---|
745 | $form = $this->field_types[$field];
|
---|
746 | else
|
---|
747 | $form = '%s';
|
---|
748 | $formatted_fields[] = $form;
|
---|
749 | }
|
---|
750 | $sql = "INSERT INTO `$table` (`" . implode( '`,`', $fields ) . "`) VALUES ('" . implode( "','", $formatted_fields ) . "')";
|
---|
751 | return $this->query( $this->prepare( $sql, $data) );
|
---|
752 | }
|
---|
753 |
|
---|
754 |
|
---|
755 | /**
|
---|
756 | * Update a row in the table
|
---|
757 | *
|
---|
758 | * <code>
|
---|
759 | * wpdb::update( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( 'ID' => 1 ), array( '%s', '%d' ), array( '%d' ) )
|
---|
760 | * </code>
|
---|
761 | *
|
---|
762 | * @since 2.5.0
|
---|
763 | * @see wpdb::prepare()
|
---|
764 | *
|
---|
765 | * @param string $table table name
|
---|
766 | * @param array $data Data to update (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped).
|
---|
767 | * @param array $where A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be "raw".
|
---|
768 | * @param array|string $format (optional) An array of formats to be mapped to each of the values in $data. If string, that format will be used for all of the values in $data. A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $data will be treated as strings.
|
---|
769 | * @param array|string $format_where (optional) An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where. A format is one of '%d', '%s' (decimal number, string). If omitted, all values in $where will be treated as strings.
|
---|
770 | * @return int|false The number of rows updated, or false on error.
|
---|
771 | */
|
---|
772 | function update($table, $data, $where, $format = null, $where_format = null) {
|
---|
773 | if ( !is_array( $where ) )
|
---|
774 | return false;
|
---|
775 |
|
---|
776 | $formats = $format = (array) $format;
|
---|
777 | $bits = $wheres = array();
|
---|
778 | foreach ( (array) array_keys($data) as $field ) {
|
---|
779 | if ( !empty($format) )
|
---|
780 | $form = ( $form = array_shift($formats) ) ? $form : $format[0];
|
---|
781 | elseif ( isset($this->field_types[$field]) )
|
---|
782 | $form = $this->field_types[$field];
|
---|
783 | else
|
---|
784 | $form = '%s';
|
---|
785 | $bits[] = "`$field` = {$form}";
|
---|
786 | }
|
---|
787 |
|
---|
788 | $where_formats = $where_format = (array) $where_format;
|
---|
789 | foreach ( (array) array_keys($where) as $field ) {
|
---|
790 | if ( !empty($where_format) )
|
---|
791 | $form = ( $form = array_shift($where_formats) ) ? $form : $where_format[0];
|
---|
792 | elseif ( isset($this->field_types[$field]) )
|
---|
793 | $form = $this->field_types[$field];
|
---|
794 | else
|
---|
795 | $form = '%s';
|
---|
796 | $wheres[] = "`$field` = {$form}";
|
---|
797 | }
|
---|
798 |
|
---|
799 | $sql = "UPDATE `$table` SET " . implode( ', ', $bits ) . ' WHERE ' . implode( ' AND ', $wheres );
|
---|
800 | return $this->query( $this->prepare( $sql, array_merge(array_values($data), array_values($where))) );
|
---|
801 | }
|
---|
802 |
|
---|
803 | /**
|
---|
804 | * Retrieve one variable from the database.
|
---|
805 | *
|
---|
806 | * Executes a SQL query and returns the value from the SQL result.
|
---|
807 | * If the SQL result contains more than one column and/or more than one row, this function returns the value in the column and row specified.
|
---|
808 | * If $query is null, this function returns the value in the specified column and row from the previous SQL result.
|
---|
809 | *
|
---|
810 | * @since 0.71
|
---|
811 | *
|
---|
812 | * @param string|null $query SQL query. If null, use the result from the previous query.
|
---|
813 | * @param int $x (optional) Column of value to return. Indexed from 0.
|
---|
814 | * @param int $y (optional) Row of value to return. Indexed from 0.
|
---|
815 | * @return string Database query result
|
---|
816 | */
|
---|
817 | function get_var($query=null, $x = 0, $y = 0) {
|
---|
818 | $this->func_call = "\$db->get_var(\"$query\",$x,$y)";
|
---|
819 | if ( $query )
|
---|
820 | $this->query($query);
|
---|
821 |
|
---|
822 | // Extract var out of cached results based x,y vals
|
---|
823 | if ( !empty( $this->last_result[$y] ) ) {
|
---|
824 | $values = array_values(get_object_vars($this->last_result[$y]));
|
---|
825 | }
|
---|
826 |
|
---|
827 | // If there is a value return it else return null
|
---|
828 | return (isset($values[$x]) && $values[$x]!=='') ? $values[$x] : null;
|
---|
829 | }
|
---|
830 |
|
---|
831 | /**
|
---|
832 | * Retrieve one row from the database.
|
---|
833 | *
|
---|
834 | * Executes a SQL query and returns the row from the SQL result.
|
---|
835 | *
|
---|
836 | * @since 0.71
|
---|
837 | *
|
---|
838 | * @param string|null $query SQL query.
|
---|
839 | * @param string $output (optional) one of ARRAY_A | ARRAY_N | OBJECT constants. Return an associative array (column => value, ...), a numerically indexed array (0 => value, ...) or an object ( ->column = value ), respectively.
|
---|
840 | * @param int $y (optional) Row to return. Indexed from 0.
|
---|
841 | * @return mixed Database query result in format specifed by $output
|
---|
842 | */
|
---|
843 | function get_row($query = null, $output = OBJECT, $y = 0) {
|
---|
844 | $this->func_call = "\$db->get_row(\"$query\",$output,$y)";
|
---|
845 | if ( $query )
|
---|
846 | $this->query($query);
|
---|
847 | else
|
---|
848 | return null;
|
---|
849 |
|
---|
850 | if ( !isset($this->last_result[$y]) )
|
---|
851 | return null;
|
---|
852 |
|
---|
853 | if ( $output == OBJECT ) {
|
---|
854 | return $this->last_result[$y] ? $this->last_result[$y] : null;
|
---|
855 | } elseif ( $output == ARRAY_A ) {
|
---|
856 | return $this->last_result[$y] ? get_object_vars($this->last_result[$y]) : null;
|
---|
857 | } elseif ( $output == ARRAY_N ) {
|
---|
858 | return $this->last_result[$y] ? array_values(get_object_vars($this->last_result[$y])) : null;
|
---|
859 | } else {
|
---|
860 | $this->print_error(/*WP_I18N_DB_GETROW_ERROR*/' $db->get_row(string query, output type, int offset) -- Il risultato deve essere uno fra questi: OBJECT, ARRAY_A, ARRAY_N'/*/WP_I18N_DB_GETROW_ERROR*/);
|
---|
861 | }
|
---|
862 | }
|
---|
863 |
|
---|
864 | /**
|
---|
865 | * Retrieve one column from the database.
|
---|
866 | *
|
---|
867 | * Executes a SQL query and returns the column from the SQL result.
|
---|
868 | * If the SQL result contains more than one column, this function returns the column specified.
|
---|
869 | * If $query is null, this function returns the specified column from the previous SQL result.
|
---|
870 | *
|
---|
871 | * @since 0.71
|
---|
872 | *
|
---|
873 | * @param string|null $query SQL query. If null, use the result from the previous query.
|
---|
874 | * @param int $x Column to return. Indexed from 0.
|
---|
875 | * @return array Database query result. Array indexed from 0 by SQL result row number.
|
---|
876 | */
|
---|
877 | function get_col($query = null , $x = 0) {
|
---|
878 | if ( $query )
|
---|
879 | $this->query($query);
|
---|
880 |
|
---|
881 | $new_array = array();
|
---|
882 | // Extract the column values
|
---|
883 | for ( $i=0; $i < count($this->last_result); $i++ ) {
|
---|
884 | $new_array[$i] = $this->get_var(null, $x, $i);
|
---|
885 | }
|
---|
886 | return $new_array;
|
---|
887 | }
|
---|
888 |
|
---|
889 | /**
|
---|
890 | * Retrieve an entire SQL result set from the database (i.e., many rows)
|
---|
891 | *
|
---|
892 | * Executes a SQL query and returns the entire SQL result.
|
---|
893 | *
|
---|
894 | * @since 0.71
|
---|
895 | *
|
---|
896 | * @param string $query SQL query.
|
---|
897 | * @param string $output (optional) ane of ARRAY_A | ARRAY_N | OBJECT | OBJECT_K constants. With one of the first three, return an array of rows indexed from 0 by SQL result row number. Each row is an associative array (column => value, ...), a numerically indexed array (0 => value, ...), or an object. ( ->column = value ), respectively. With OBJECT_K, return an associative array of row objects keyed by the value of each row's first column's value. Duplicate keys are discarded.
|
---|
898 | * @return mixed Database query results
|
---|
899 | */
|
---|
900 | function get_results($query = null, $output = OBJECT) {
|
---|
901 | $this->func_call = "\$db->get_results(\"$query\", $output)";
|
---|
902 |
|
---|
903 | if ( $query )
|
---|
904 | $this->query($query);
|
---|
905 | else
|
---|
906 | return null;
|
---|
907 |
|
---|
908 | if ( $output == OBJECT ) {
|
---|
909 | // Return an integer-keyed array of row objects
|
---|
910 | return $this->last_result;
|
---|
911 | } elseif ( $output == OBJECT_K ) {
|
---|
912 | // Return an array of row objects with keys from column 1
|
---|
913 | // (Duplicates are discarded)
|
---|
914 | foreach ( $this->last_result as $row ) {
|
---|
915 | $key = array_shift( get_object_vars( $row ) );
|
---|
916 | if ( !isset( $new_array[ $key ] ) )
|
---|
917 | $new_array[ $key ] = $row;
|
---|
918 | }
|
---|
919 | return $new_array;
|
---|
920 | } elseif ( $output == ARRAY_A || $output == ARRAY_N ) {
|
---|
921 | // Return an integer-keyed array of...
|
---|
922 | if ( $this->last_result ) {
|
---|
923 | $i = 0;
|
---|
924 | foreach( (array) $this->last_result as $row ) {
|
---|
925 | if ( $output == ARRAY_N ) {
|
---|
926 | // ...integer-keyed row arrays
|
---|
927 | $new_array[$i] = array_values( get_object_vars( $row ) );
|
---|
928 | } else {
|
---|
929 | // ...column name-keyed row arrays
|
---|
930 | $new_array[$i] = get_object_vars( $row );
|
---|
931 | }
|
---|
932 | ++$i;
|
---|
933 | }
|
---|
934 | return $new_array;
|
---|
935 | }
|
---|
936 | }
|
---|
937 | }
|
---|
938 |
|
---|
939 | /**
|
---|
940 | * Retrieve column metadata from the last query.
|
---|
941 | *
|
---|
942 | * @since 0.71
|
---|
943 | *
|
---|
944 | * @param string $info_type one of name, table, def, max_length, not_null, primary_key, multiple_key, unique_key, numeric, blob, type, unsigned, zerofill
|
---|
945 | * @param int $col_offset 0: col name. 1: which table the col's in. 2: col's max length. 3: if the col is numeric. 4: col's type
|
---|
946 | * @return mixed Column Results
|
---|
947 | */
|
---|
948 | function get_col_info($info_type = 'name', $col_offset = -1) {
|
---|
949 | if ( $this->col_info ) {
|
---|
950 | if ( $col_offset == -1 ) {
|
---|
951 | $i = 0;
|
---|
952 | foreach( (array) $this->col_info as $col ) {
|
---|
953 | $new_array[$i] = $col->{$info_type};
|
---|
954 | $i++;
|
---|
955 | }
|
---|
956 | return $new_array;
|
---|
957 | } else {
|
---|
958 | return $this->col_info[$col_offset]->{$info_type};
|
---|
959 | }
|
---|
960 | }
|
---|
961 | }
|
---|
962 |
|
---|
963 | /**
|
---|
964 | * Starts the timer, for debugging purposes.
|
---|
965 | *
|
---|
966 | * @since 1.5.0
|
---|
967 | *
|
---|
968 | * @return true
|
---|
969 | */
|
---|
970 | function timer_start() {
|
---|
971 | $mtime = microtime();
|
---|
972 | $mtime = explode(' ', $mtime);
|
---|
973 | $this->time_start = $mtime[1] + $mtime[0];
|
---|
974 | return true;
|
---|
975 | }
|
---|
976 |
|
---|
977 | /**
|
---|
978 | * Stops the debugging timer.
|
---|
979 | *
|
---|
980 | * @since 1.5.0
|
---|
981 | *
|
---|
982 | * @return int Total time spent on the query, in milliseconds
|
---|
983 | */
|
---|
984 | function timer_stop() {
|
---|
985 | $mtime = microtime();
|
---|
986 | $mtime = explode(' ', $mtime);
|
---|
987 | $time_end = $mtime[1] + $mtime[0];
|
---|
988 | $time_total = $time_end - $this->time_start;
|
---|
989 | return $time_total;
|
---|
990 | }
|
---|
991 |
|
---|
992 | /**
|
---|
993 | * Wraps errors in a nice header and footer and dies.
|
---|
994 | *
|
---|
995 | * Will not die if wpdb::$show_errors is true
|
---|
996 | *
|
---|
997 | * @since 1.5.0
|
---|
998 | *
|
---|
999 | * @param string $message
|
---|
1000 | * @return false|void
|
---|
1001 | */
|
---|
1002 | function bail($message) {
|
---|
1003 | if ( !$this->show_errors ) {
|
---|
1004 | if ( class_exists('WP_Error') )
|
---|
1005 | $this->error = new WP_Error('500', $message);
|
---|
1006 | else
|
---|
1007 | $this->error = $message;
|
---|
1008 | return false;
|
---|
1009 | }
|
---|
1010 | wp_die($message);
|
---|
1011 | }
|
---|
1012 |
|
---|
1013 | /**
|
---|
1014 | * Whether or not MySQL database is at least the required minimum version.
|
---|
1015 | *
|
---|
1016 | * @since 2.5.0
|
---|
1017 | * @uses $wp_version
|
---|
1018 | *
|
---|
1019 | * @return WP_Error
|
---|
1020 | */
|
---|
1021 | function check_database_version()
|
---|
1022 | {
|
---|
1023 | global $wp_version;
|
---|
1024 | // Make sure the server has MySQL 4.0
|
---|
1025 | if ( version_compare($this->db_version(), '4.0.0', '<') )
|
---|
1026 | return new WP_Error('database_version',sprintf(__('<strong>ERROR</strong>: WordPress %s requires MySQL 4.0.0 or higher'), $wp_version));
|
---|
1027 | }
|
---|
1028 |
|
---|
1029 | /**
|
---|
1030 | * Whether of not the database supports collation.
|
---|
1031 | *
|
---|
1032 | * Called when WordPress is generating the table scheme.
|
---|
1033 | *
|
---|
1034 | * @since 2.5.0
|
---|
1035 | *
|
---|
1036 | * @return bool True if collation is supported, false if version does not
|
---|
1037 | */
|
---|
1038 | function supports_collation()
|
---|
1039 | {
|
---|
1040 | return $this->has_cap( 'collation' );
|
---|
1041 | }
|
---|
1042 |
|
---|
1043 | /**
|
---|
1044 | * Generic function to determine if a database supports a particular feature
|
---|
1045 | * @param string $db_cap the feature
|
---|
1046 | * @param false|string|resource $dbh_or_table (not implemented) Which database to test. False = the currently selected database, string = the database containing the specified table, resource = the database corresponding to the specified mysql resource.
|
---|
1047 | * @return bool
|
---|
1048 | */
|
---|
1049 | function has_cap( $db_cap ) {
|
---|
1050 | $version = $this->db_version();
|
---|
1051 |
|
---|
1052 | switch ( strtolower( $db_cap ) ) :
|
---|
1053 | case 'collation' : // @since 2.5.0
|
---|
1054 | case 'group_concat' : // @since 2.7
|
---|
1055 | case 'subqueries' : // @since 2.7
|
---|
1056 | return version_compare($version, '4.1', '>=');
|
---|
1057 | break;
|
---|
1058 | endswitch;
|
---|
1059 |
|
---|
1060 | return false;
|
---|
1061 | }
|
---|
1062 |
|
---|
1063 | /**
|
---|
1064 | * Retrieve the name of the function that called wpdb.
|
---|
1065 | *
|
---|
1066 | * Requires PHP 4.3 and searches up the list of functions until it reaches
|
---|
1067 | * the one that would most logically had called this method.
|
---|
1068 | *
|
---|
1069 | * @since 2.5.0
|
---|
1070 | *
|
---|
1071 | * @return string The name of the calling function
|
---|
1072 | */
|
---|
1073 | function get_caller() {
|
---|
1074 | // requires PHP 4.3+
|
---|
1075 | if ( !is_callable('debug_backtrace') )
|
---|
1076 | return '';
|
---|
1077 |
|
---|
1078 | $bt = debug_backtrace();
|
---|
1079 | $caller = array();
|
---|
1080 |
|
---|
1081 | $bt = array_reverse( $bt );
|
---|
1082 | foreach ( (array) $bt as $call ) {
|
---|
1083 | if ( @$call['class'] == __CLASS__ )
|
---|
1084 | continue;
|
---|
1085 | $function = $call['function'];
|
---|
1086 | if ( isset( $call['class'] ) )
|
---|
1087 | $function = $call['class'] . "->$function";
|
---|
1088 | $caller[] = $function;
|
---|
1089 | }
|
---|
1090 | $caller = join( ', ', $caller );
|
---|
1091 |
|
---|
1092 | return $caller;
|
---|
1093 | }
|
---|
1094 |
|
---|
1095 | /**
|
---|
1096 | * The database version number
|
---|
1097 | * @param false|string|resource $dbh_or_table (not implemented) Which database to test. False = the currently selected database, string = the database containing the specified table, resource = the database corresponding to the specified mysql resource.
|
---|
1098 | * @return false|string false on failure, version number on success
|
---|
1099 | */
|
---|
1100 | function db_version() {
|
---|
1101 | return preg_replace('/[^0-9.].*/', '', mysql_get_server_info( $this->dbh ));
|
---|
1102 | }
|
---|
1103 | }
|
---|
1104 |
|
---|
1105 | if ( ! isset($wpdb) ) {
|
---|
1106 | /**
|
---|
1107 | * WordPress Database Object, if it isn't set already in wp-content/db.php
|
---|
1108 | * @global object $wpdb Creates a new wpdb object based on wp-config.php Constants for the database
|
---|
1109 | * @since 0.71
|
---|
1110 | */
|
---|
1111 | $wpdb = new wpdb(DB_USER, DB_PASSWORD, DB_NAME, DB_HOST);
|
---|
1112 | }
|
---|
1113 | ?>
|
---|