File size: 5.62Kb
<?php
/*
=====================================================
DataLife Engine - by SoftNews Media Group
-----------------------------------------------------
https://dle-news.ru/
-----------------------------------------------------
Copyright (c) 2004-2025 SoftNews Media Group
=====================================================
This code is protected by copyright
=====================================================
File: memcache.class.php
-----------------------------------------------------
Use: memcache class
=====================================================
*/
if( !defined( 'DATALIFEENGINE' ) ) {
header( "HTTP/1.1 403 Forbidden" );
header ( 'Location: ../../' );
die( "Hacking attempt!" );
}
class dle_fastcache
{
protected $server = null;
protected $suite_key = null;
protected $server_type = null;
protected $max_age = null;
protected $host = null;
protected $port = null;
public $connection = null;
public function __construct( $config ) {
$this->suite_key = md5( DBNAME . PREFIX . SECURE_AUTH_KEY );
$this->server = $this->connect();
if($this->connection !== -1 ) {
$memcache_server = explode(":", $config['memcache_server']);
$this->connection = 1;
if ($memcache_server[0] == 'unix') {
$memcache_server = array($config['memcache_server'], 0);
$this->host = $memcache_server[0];
$this->port = -1;
} else {
$this->host = $memcache_server[0];
$this->port = $memcache_server[1];
}
if ( !$this->server->addServer($memcache_server[0], $memcache_server[1]) ) {
$this->connection = 0;
}
if ( $this->server->getStats() === false ) {
$this->connection = 0;
}
if($this->connection > 0 AND $this->server_type == "memcached") {
$this->server->setOption(Memcached::OPT_COMPRESSION, false);
}
}
if ( $config['clear_cache'] ) $this->max_age = $config['clear_cache'] * 60; else $this->max_age = 86400;
}
protected function connect() {
if( class_exists( 'Memcached' ) ) {
$this->server_type = "memcached";
return new Memcached();
} elseif( class_exists( 'Memcache' ) ) {
$this->server_type = "memcache";
return new Memcache();
} else {
$this->connection = -1;
}
}
public function get( $key ) {
if($this->connection < 1 ) return false;
return $this->server->get($key."_".$this->suite_key);
}
public function set($key, $value, $max_age = false) {
if($this->connection < 1 ) return false;
$this->_set( $key."_".$this->suite_key, $value, $max_age );
return true;
}
public function clear( $cache_areas = false ) {
if($this->connection < 1 ) return false;
if ( $cache_areas ) {
if(!is_array($cache_areas)) {
$cache_areas = array($cache_areas);
}
}
if( $cache_areas ) {
$all_list = $this->getAllKeys();
if(count($all_list)) {
foreach ( $all_list as $key ) {
foreach($cache_areas as $cache_area){
if( stripos( $key, $cache_area ) === 0 ) {
$this->server->delete($key);
}
}
}
} else {
$this->_clear_all();
}
} else {
$this->_clear_all();
}
return true;
}
protected function _set( $key, $value, $max_age) {
if($this->connection < 1 ) return false;
if ( $this->server_type == "memcache" ) {
if ($max_age) {
$this->server->set($key, $value, 0, $max_age);
} else {
$this->server->set($key, $value, 0, $this->max_age);
}
} else {
if ($max_age) {
$this->server->set($key, $value, $max_age);
} else {
$this->server->set($key, $value, $this->max_age);
}
}
return true;
}
protected function getAllKeys() {
if( method_exists( $this->server, 'getAllKeys' ) ) {
$allKeys = $this->server->getAllKeys();
return $allKeys;
}
$sock = fsockopen($this->host, $this->port);
if ($sock === false) {
return array();
}
if (fwrite($sock, "stats items\n") === false) {
return array();
}
$slabCounts = $allKeys = array();
while (($line = fgets($sock)) !== false) {
$line = trim($line);
if ($line === 'END') {
break;
}
if (preg_match('!^STAT items:(\d+):number (\d+)$!', $line, $matches)) {
$slabCounts[$matches[1]] = (int)$matches[2];
}
}
foreach ($slabCounts as $slabNr => $slabCount) {
if (fwrite($sock, "lru_crawler metadump {$slabNr}\n") === false) {
return array();
}
$count = 0;
while (($line = fgets($sock)) !== false) {
$line = trim($line);
if ($line === 'END') {
break;
}
if (preg_match('!^key=(\S+)!', $line, $matches)) {
if( strpos( $matches[1], $this->suite_key ) !== false ) {
$allKeys[] = $matches[1];
$count++;
}
}
}
}
fclose($sock);
return $allKeys;
}
protected function _clear_all() {
if($this->connection < 1 ) return false;
$this->server->flush();
return true;
}
public function __destruct() {
if($this->connection < 1 ) return;
if( $this->server ) {
if( method_exists( $this->server, 'quit' ) ) {
$this->server->quit();
} elseif( method_exists( $this->server, 'close' ) ) {
$this->server->close();
}
}
}
}
// deprecated name
class dle_memcache
{
public $connection = null;
public function __construct( $config ) {
$this->connection = 0;
}
}