Home >Backend Development >PHP Tutorial >PHP file caching class example sharing, _PHP tutorial
PHP file caching class example sharing, _PHP tutorial
- WBOYOriginal
- 2016-07-13 10:08:30744browse
PHP file caching class example sharing,
Copy code The code is as follows:
/**
* @desc file cache
*/
class Cache{
const C_FILE = '/Runtime/';
private $dir = '';
const EXT = '.tpl';
private $filename = '';
public function __construct($dir = ''){
$this->dir = $dir;
}
/**
*/
public function set($key,$data,$expire = 0){
$this->filename = dirname(__FILE__).self::C_FILE.$this->dir.$key.self::EXT;
if(file_exists($this->filename)){
$res = $this->get($key);
if(md5($res) == md5(json_encode($data) ) ){
return true;
}
}
if(!is_dir(dirname($this->filename))){
mkdir(dirname($this->filename),0777);
}
$source = fopen($this->filename,'w+');
fwrite($source,json_encode($data));
fclose($source);
}
/**
* @param string $key file name
*/
public function get($key){
//$filename = dirname(__FILE__).self::C_FILE.$this->dir.$key.self::EXT;
if(!file_exists($this->filename)){
return '缓存文件已经不存在';
}else{
$res = file_get_contents($this->filename);
}
return $res;
}
/**
* @param string $key file name
*/
public function del($key){
unlink($this->filename);
}
}
$data = array('name'=>'song','age'=>20,'sex'=>'man','favority'=>array('apple','banana'));
$cache = new Cache();
$cache->set('cache',$data);
//$cache->get('cache');
//$cache->del('cache');
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：How different files build PHP programs_PHP TutorialNext article：How different files build PHP programs_PHP Tutorial