<?php
class lib_cache {
private $cache_dir = "_cache/";
private $group_prefix = "@";
private $size = 0;
public function load_page($name,$time=60,$group)
{
$name = md5($name);
$dir = $this->addGroup($group);
if(@filemtime($dir.$name)>time()-$time)
{
echo @file_get_contents($dir.$name);
return TRUE;
}
else
{
if(!@ob_start("ob_gzhandler")) @ob_start();
return FALSE;
}
}
public function save_page($name,$group)
{
$name = md5($name);
$dir = $this->addGroup($group);
if(@file_exists($dir.$name))
unlink($dir.$name);
$page = @ob_get_contents();
@file_put_contents($dir.$name, $page);
@ob_get_clean($page);
}
public function load($name,$time=60,$group)
{
$name = md5($name);
$dir = $this->addGroup($group);
if(@filemtime($dir.$name) > time() - $time)
{
return unserialize(@file_get_contents($dir.$name));
}
else
{
return FALSE;
}
}
public function save($name,$value,$group)
{
$name = md5($name);
$dir = $this->addGroup($group);
if(@file_exists($dir.$name))
unlink($dir.$name);
@file_put_contents($dir.$name, serialize($value));
}
private function addGroup($name)
{
if(!empty($name))
{
if(is_dir($this->cache_dir.$this->group_prefix.$name))
{
return $this->cache_dir.$this->group_prefix.$name."/";
}
else if(@mkdir($this->cache_dir.$this->group_prefix.$name))
{
return $this->cache_dir.$this->group_prefix.$name."/";
}
else
{
return $this->cache_dir;
}
}
else
{
return $this->cache_dir;
}
}
public function removeGroup($name)
{
foreach(glob($this->cache_dir.$this->group_prefix.$name."/*") as $file)
{
unlink($file);
}
@rmdir($this->cache_dir.$this->group_prefix.$name);
}
public function removeAllGroup()
{
foreach(glob($this->cache_dir.$this->group_prefix."*") as $dir)
{
foreach(glob($dir."/*") as $file)
{
unlink($file);
}
@rmdir($dir);
}
}
public function remove($name,$group)
{
@unlink($this->cache_dir.$group."/".md5($name));
}
public function removeAll()
{
$this->removeAllGroup();
foreach(glob($this->cache_dir."*") as $file)
{
unlink($file);
}
}
public function checkCacheDir()
{
if(is_dir($this->cache_dir) && is_writable($this->cache_dir) && is_readable($this->cache_dir))
{
return TRUE;
}
else
{
return FALSE;
}
}
public function sizeCacheDir()
{
foreach(glob($this->cache_dir."*") as $file)
{
$this->size+=filesize($file);
}
foreach(glob($this->cache_dir.$this->group_prefix."*") as $dir)
{
foreach(glob($dir."/*") as $file)
{
$this->size+=filesize($file);
}
}
if($this->size <= pow(2,20))
{
return round($this->size/pow(2,10),2)."kB";
}
else
{
return round($this->size/pow(2,20),2)."MB";
}
}
};
?>
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