source: trunk/www.guidonia.net/wp/wp-content/plugins/wordpress-google-seo-positioner/includes/functions.php@ 44

<?php
/*
* Position Yourself WP Plugin Functions
*/


/**
* Trims all array elements
* @return array
*/
if ( !function_exists('pyTrimArray') ) :
function pyTrimArray($totrim) {
        if (is_array($totrim)) {
                $totrim = array_map("trim", $totrim);
        } else {
                $totrim = trim($totrim);
        }
        return $totrim;
}
endif;

/*
* Output a clean version of array / object
*/
if ( !function_exists('pyPre') ) :
function pyPre($array) {
        echo "<pre>";
        print_r($array);
        echo "</pre>";
}
endif;


//Author Binu.v.Pillai
function diffTime($bigTime, $smallTime) {
//input format hh:mm:ss

        list($h1, $m1, $s1) = split(":", $bigTime);
        list($h2, $m2, $s2) = split(":", $smallTime);
   
        $second1 = $s1 + ( $h1*3600 ) + ( $m1*60 );//converting it into seconds
        $second2 = $s2 + ( $h2*3600 ) + ( $m2*60 );

        if ( $second1 == $second2 ) {
                $resultTime = "00:00:00";
                return $resultTime;
                exit();
        }
        if ( $second1 < $second2 ) {
                $second1 = $second1 + ( 24*60*60 );//adding 24 hours to it.
        }
        $second3 = $second1 - $second2;
        //print $second3;
        if ( $second3 == 0 ) {
                $h3 = 0;
        } else {
                $h3 = floor( $second3/3600 );//find total hours
        }
        
        $remSecond = $second3 - ( $h3*3600 );//get remaining seconds
        if ( $remSecond == 0 ) {
                $m3 = 0;
        } else {
                $m3 = floor( $remSecond / 60);// for finding remaining  minutes
        }
           
        $s3 = $remSecond - ( 60*$m3 );
        if ( $h3 == 0 ) {
                $h3 = "00";
        }
        if ( $m3 == 0 ) {
                $m3="00";
        }
        if ( $s3 == 0 ) {
                $s3="00";
        }
           
        $resultTime = "$h3:$m3:$s3";

        return $resultTime;
}
?>