source: trunk/www.guidonia.net/wp/wp-includes/js/tinymce/plugins/spellchecker/classes/GoogleSpell.php@ 44

<?php
/**
 * $Id: editor_plugin_src.js 201 2007-02-12 15:56:56Z spocke $
 *
 * @package MCManager.includes
 * @author Moxiecode
 * @copyright Copyright © 2004-2007, Moxiecode Systems AB, All rights reserved.
 */

class GoogleSpell extends SpellChecker {
        /**
         * Spellchecks an array of words.
         *
         * @param {String} $lang Language code like sv or en.
         * @param {Array} $words Array of words to spellcheck.
         * @return {Array} Array of misspelled words.
         */
        function &checkWords($lang, $words) {
                $wordstr = implode(' ', $words);
                $matches = $this->_getMatches($lang, $wordstr);
                $words = array();

                for ($i=0; $i<count($matches); $i++)
                        $words[] = $this->_unhtmlentities(mb_substr($wordstr, $matches[$i][1], $matches[$i][2], "UTF-8"));

                return $words;
        }

        /**
         * Returns suggestions of for a specific word.
         *
         * @param {String} $lang Language code like sv or en.
         * @param {String} $word Specific word to get suggestions for.
         * @return {Array} Array of suggestions for the specified word.
         */
        function &getSuggestions($lang, $word) {
                $sug = array();
                $osug = array();
                $matches = $this->_getMatches($lang, $word);

                if (count($matches) > 0)
                        $sug = explode("\t", utf8_encode($this->_unhtmlentities($matches[0][4])));

                // Remove empty
                foreach ($sug as $item) {
                        if ($item)
                                $osug[] = $item;
                }

                return $osug;
        }

        function &_getMatches($lang, $str) {
                $server = "www.google.com";
                $port = 443;
                $path = "/tbproxy/spell?lang=" . $lang . "&hl=en";
                $host = "www.google.com";
                $url = "https://" . $server;

                // Setup XML request
                $xml = '<?xml version="1.0" encoding="utf-8" ?><spellrequest textalreadyclipped="0" ignoredups="0" ignoredigits="1" ignoreallcaps="1"><text>' . $str . '</text></spellrequest>';

                $header  = "POST ".$path." HTTP/1.0 \r\n";
                $header .= "MIME-Version: 1.0 \r\n";
                $header .= "Content-type: application/PTI26 \r\n";
                $header .= "Content-length: ".strlen($xml)." \r\n";
                $header .= "Content-transfer-encoding: text \r\n";
                $header .= "Request-number: 1 \r\n";
                $header .= "Document-type: Request \r\n";
                $header .= "Interface-Version: Test 1.4 \r\n";
                $header .= "Connection: close \r\n\r\n";
                $header .= $xml;

                // Use curl if it exists
                if (function_exists('curl_init')) {
                        // Use curl
                        $ch = curl_init();
                        curl_setopt($ch, CURLOPT_URL,$url);
                        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
                        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $header);
                        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
                        $xml = curl_exec($ch);
                        curl_close($ch);
                } else {
                        // Use raw sockets
                        $fp = fsockopen("ssl://" . $server, $port, $errno, $errstr, 30);
                        if ($fp) {
                                // Send request
                                fwrite($fp, $header);

                                // Read response
                                $xml = "";
                                while (!feof($fp))
                                        $xml .= fgets($fp, 128);

                                fclose($fp);
                        } else
                                echo "Could not open SSL connection to google.";
                }

                // Grab and parse content
                $matches = array();
                preg_match_all('/<c o="([^"]*)" l="([^"]*)" s="([^"]*)">([^<]*)<\/c>/', $xml, $matches, PREG_SET_ORDER);

                return $matches;
        }

        function _unhtmlentities($string) {
                $string = preg_replace('~&#x([0-9a-f]+);~ei', 'chr(hexdec("\\1"))', $string);
                $string = preg_replace('~&#([0-9]+);~e', 'chr(\\1)', $string);

                $trans_tbl = get_html_translation_table(HTML_ENTITIES);
                $trans_tbl = array_flip($trans_tbl);

                return strtr($string, $trans_tbl);
        }
}

// Patch in multibyte support
if (!function_exists('mb_substr')) {
        function mb_substr($str, $start, $len = '', $encoding="UTF-8"){
                $limit = strlen($str);

                for ($s = 0; $start > 0;--$start) {// found the real start
                        if ($s >= $limit)
                                break;

                        if ($str[$s] <= "\x7F")
                                ++$s;
                        else {
                                ++$s; // skip length

                                while ($str[$s] >= "\x80" && $str[$s] <= "\xBF")
                                        ++$s;
                        }
                }

                if ($len == '')
                        return substr($str, $s);
                else
                        for ($e = $s; $len > 0; --$len) {//found the real end
                                if ($e >= $limit)
                                        break;

                                if ($str[$e] <= "\x7F")
                                        ++$e;
                                else {
                                        ++$e;//skip length

                                        while ($str[$e] >= "\x80" && $str[$e] <= "\xBF" && $e < $limit)
                                                ++$e;
                                }
                        }

                return substr($str, $s, $e - $s);
        }
}

?>