147 lines
4.8 KiB
PHP
147 lines
4.8 KiB
PHP
<?php
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if(!defined('DATALIFEENGINE')){die("Hacking attempt!");}
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class cache{
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var $dir = false;
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var $allow_cache = false;
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var $memcache = false;
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private $mcache;
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private $memcache_host = '127.0.0.1';
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private $memcache_port = 11211;
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var $timelife = 3600;
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function __construct($dir) {
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global $config;
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$this->dir = $dir;
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if( $config['allow_cache'] = "yes" ) $this->allow_cache = true;
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if( $config['cache_type']) $this->memcache = true;
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if( $this->memcache AND function_exists('memcache_connect') ) $this->mcache = memcache_connect($this->memcache_host, $this->memcache_port);
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if( $this->memcache AND function_exists('memcache_set_compress_threshold') ){memcache_set_compress_threshold( $this->mcache, 20000, 0.2 );}
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}
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function off(){
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$this->allow_cache = false;
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}
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function set($file, $data){
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$fp = fopen( $this->dir.'/system/' . $file . '.php', 'wb+' );
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if (!$data) $data = 'a:0:{}';
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fwrite( $fp, serialize( $data ) );
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fclose( $fp );
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@chmod( $this->dir.'/system/' . $file . '.php', 0666 );
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}
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function get($file){
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return unserialize( @file_get_contents( $this->dir.'/system/' . $file . '.php' ) );
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}
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function delete($cache_area = false){
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$fdir = opendir($this->dir.'/system/');
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while ($file = readdir($fdir)){
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if ($file != '.' and $file != '..' and $file != '.htaccess' and $file != 'online.php'){
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if ($cache_area){
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if (strpos($file, $cache_area) !== false) @unlink($this->dir.'/system/'.$file);
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}else{
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@unlink($this->dir.'/system/'.$file);
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}
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}
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}
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}
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function filename($name){
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if(!$this->memcache) return $this->dir.'/'.$name.'.tmp';
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else return md5($name);
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}
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function open($name, $cache_id = false, $member_prefix = false){
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global $is_logged, $member_id;
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if(!$this->allow_cache) return false;
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if( $is_logged ) $group = $member_id['user_group']; else $group = "0";
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if( !$cache_id ){ $filename = $this->filename($name);
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} else {
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$cache_id = md5( $cache_id );
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if( $member_prefix ) $filename = $this->filename($name . "_" . $cache_id . "_" . $group); else $filename = $this->filename($name . "_" . $cache_id);
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}
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if($this->memcache){
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return memcache_get($this->mcache, $filename);
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} else {
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if(file_exists($filename) && is_readable($filename) && filesize($filename) > 0 && (time() - $this->timelife < filemtime($filename))) {
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return @file_get_contents( $filename );
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} else {
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return false;
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}
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}
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}
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function save($name, $data, $cache_id = false, $member_prefix = false){
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global $is_logged, $member_id;
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if(empty( $data ) OR !$this->allow_cache) return false;
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if( $is_logged ) $group = $member_id['user_group']; else $group = "0";
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if( !$cache_id ){ $filename = $this->filename($name);
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} else {
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$cache_id = md5( $cache_id );
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if( $member_prefix ) $filename = $this->filename($name . "_" . $cache_id . "_" . $group); else $filename = $this->filename($name . "_" . $cache_id);
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}
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if($this->memcache){
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memcache_set( $this->mcache, $filename, $data, MEMCACHE_COMPRESSED, $this->timelife );
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} else {
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@unlink( $filename );
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file_put_contents ($filename, $data, LOCK_EX);
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@chmod( $filename, 0666 );
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}
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}
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function clear($cache_areas = false) {
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if ( $this->memcache ) {
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memcache_flush($this->mcache);
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} else {
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if ( $cache_areas ) {if(!is_array($cache_areas)) {$cache_areas = array($cache_areas);}}
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$fdir = opendir( $this->dir );
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while ( $file = readdir( $fdir ) ) {
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if( $file != '.' and $file != '..' and $file != '.htaccess' and $file != 'system' ) {
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if( $cache_areas ) { foreach($cache_areas as $cache_area) if( strpos( $file, $cache_area ) !== false ) @unlink( $this->dir . '/' . $file );
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} else {@unlink( $this->dir . '/' . $file );}
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}}}
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}
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function del($file){
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if ($this->memcache){
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memcache_delete($this->mcache, $this->filename($file));
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}else{
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@unlink($this->filename($file));
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}
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}
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function size(){
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if($this->memcache){
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$stat = memcache_get_stats($this->mcache);
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$size = $stat['bytes'];
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}else{
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$size = dirsize($this->dir);
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}
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return $size;
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}
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public function __destruct(){
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if($this->memcache){
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if(memcache_close($this->mcache)){
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return TRUE;
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}else{
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return FALSE;
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}
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}else{
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return FALSE;
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}
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}
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}
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?>
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