php 文件比较类

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<?php/** http://www.codepearl.com*/class compare{private $source;private $update;private $removed = array();private $added = array();private $changed = array();public function __construct(){}public function set_source($source) {$this->source = $source;}public function set_update($update) {$this->update = $update;}public function get_source() {return $this->source;}public function get_update() {return $this->update;}public function get_removed() {return $this->removed;}public function get_added() {return $this->added;}public function get_changed() {return $this->changed;}public function do_compare(){    $source = Array();    $destination = Array();    $currentDirectory = getcwd();    $workingDir = '';    chdir($this->source);    $source = $this->doTree('.', $source);    if (!is_array($source)) return;    chdir ($this->update);    $destination = $this->doTree('.', $destination);    if (!is_array($destination)) exit;    chdir($currentDirectory);    foreach ($source as $dir => $value) {        foreach($value as $file => $hash) {            if (isset($destination[$dir][$file])) {                if ($hash != $destination[$dir][$file]) {                    $this->changed[] = $dir.'/'.$file;                }            } else {                $this->removed[] = $dir.'/'.$file;            }        }    }    foreach ($destination as $dir => $value) {        foreach($value as $file => $hash) {            if (!isset($source[$dir][$file])) {                $this->added[] = $dir.'/'.$file;            }        }    }}private function checksum($file) {    $ignores = Array(10, 13);    $fh = fopen($file, 'r');    $buffer = '';    while (!feof($fh)) {        $buffer .= fgets($fh);    }    fclose ($fh);    foreach ($ignores as $ignore) {        while (strpos($buffer, chr($ignore))) {            $buffer = str_replace(chr($ignore), '', $buffer);        }    }    return hash('crc32', $buffer).hash('crc32b', $buffer);}private function doTree($dir, &$array) {    if (stripos($dir, 'checksum') !== false     || stripos($dir, 'cache')  !== false     || stripos($dir, 'import')  !== false     || stripos($dir, 'custom')  !== false     || stripos($dir, '_notes')  !== false     || stripos($dir, '.svn') !== false) {        return $array;    }    $filetypes = Array('php', 'js', 'htm', 'html', 'css', 'tpl', 'ini', 'txt');    if ($dh = opendir($dir)) {        while ($file = readdir($dh)) {            if ($file != '.' && $file != '..') {                if (is_dir($dir.'/'.$file)) {                    if (count($array) == 0) $array[0] = 'Temp';                    if (!$this->doTree($dir.'/'.$file, $array)) {                        return false;                    }                } else {                    if (filesize($dir.'/'.$file)) {                        foreach ($filetypes as $type) {                            if (strpos($file.'|', '.'.$type.'|') != 0 ) {                                set_time_limit(30);                                $array[$dir][$file] = $this->checksum( $dir.'/'.$file ); //md5_file($dir.'/'.$file, false);                            }                        }                    }                }            }        }        if (count($array) > 1  && isset($array['0'])) unset($array['0']);        return $array;    } else {        echo 'error opening '.$dir.'</h3>';        return false;    }}}

2.使用方法

<?php/** http://www.codepearl.com*/?><html><head><title>http://www.codepearl.com</title></head><body><h1 align="center">Upgrade checker</h1><?php    include ('compare.class.php');// Load the class    $cmp = new compare();// Initialize the class    $dir = dirname(__FILE__);    $cmp->set_source($dir.'\Source');// Directory where Source files are    $cmp->set_update($dir.'\Update');// Directory where pristeen files are    $cmp->do_compare();// Do the compare    $removed = $cmp->get_removed();// Get the results    $added = $cmp->get_added();// ...    $changed = $cmp->get_changed();// ...    echo '<h3>Files Changed</h3>';// Display the results    foreach($changed as $file) {        echo $file.' has been changed<br>';    }    echo '<h3>Files Added</h3>';    foreach ($added as $add) {        echo $add.'<br>';    }    echo '<h3>Files Removed</h3>';    foreach ($removed as $remove) {        echo $remove.'<br>';    }    ?></body></html>