Simple PHP caching class sharing_PHP tutorial

This article mainly introduces a php cache class. The file name is encrypted using md5. Please refer to it for reference

The code is as follows: dir=$dirpath; $this->make_dir($this->dir); } function read($key,$minutes=1) { $filename=$this->get_filename($key); if($datas = @file_get_contents($filename)) { $datas = unserialize($datas); if(time() - $datas['time'] < $minutes*60) { Return $datas['data']; } } return false; } ​ function write($key,$data) { $filename=$this->get_filename($key); if($handle = fopen($filename,'w+')) { $datas = array('data'=>$data,'time'=>time()); flock($handle,LOCK_EX); $rs = fputs($handle,serialize($datas)); flock($handle,LOCK_UN); fclose($handle); if($rs!==false){return true; } } return false; } function clear_all() { $dir=$this->dir; $this->del_file($dir); } ​ private function get_filename($key) { Return $this->dir.$key.'_'.md5($key.$this->key); } private function make_dir($path) { if (! file_exists ( $path )) { $this->make_dir ( dirname ( $path ) ); if (! mkdir ( $path, 0777 )) die ('Unable to create cache folder' . $path ); } } private function del_file($dir) { if (is_dir($dir)) { $dh=opendir($dir);//Open the directory //List all files in the directory and remove . and .. while (false !== ( $file = readdir ($dh))) { if($file!="." && $file!="..") { $fullpath=$dir."/".$file; If(!is_dir($fullpath)) { ​ unlink($fullpath); } } else { $this->del_file($fullpath); } } } } closedir($dh); } } } ​ $cache = new cache(); $cache->set_dir('data/cache_dir/'); $data=$cache->read('sys',1); if(empty($data)) { $data=array('aa'=>1111,'bb'=>2222,'date'=>date('Y-m-d H:i:s')); $cache->write('sys',$data); } print_r($data);

http://www.bkjia.com/PHPjc/727577.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/727577.htmlTechArticleThis article mainly introduces a php cache class. The file name is encrypted using md5. For reference, the code is as follows: ?phpclass Cache{private $dir = data/cache/;//Define cache directory private $...