【thinkphp3.2.x】thinkphp3.2.x中有关file文件缓存相关的文件

来源：互联网发布：现代软件学院马少红编辑：程序博客网时间：2024/05/30 04:31
一、file文件缓存类文件:'mytp\ThinkPHP\Library\Think\Cache\Driver\File.class.php'
<?php// +----------------------------------------------------------------------// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]// +----------------------------------------------------------------------// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.// +----------------------------------------------------------------------// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )// +----------------------------------------------------------------------// | Author: liu21st <liu21st@gmail.com>// +----------------------------------------------------------------------namespace Think\Cache\Driver;use Think\Cache;defined('THINK_PATH') or exit();/** * 文件类型缓存类 */class File extends Cache {    /**     * 架构函数     * @access public     */    public function __construct($options=array()) {        if(!empty($options)) {            $this->options =  $options;        }        $this->options['temp']      =   !empty($options['temp'])?   $options['temp']    :   C('DATA_CACHE_PATH');        $this->options['prefix']    =   isset($options['prefix'])?  $options['prefix']  :   C('DATA_CACHE_PREFIX');        $this->options['expire']    =   isset($options['expire'])?  $options['expire']  :   C('DATA_CACHE_TIME');        $this->options['length']    =   isset($options['length'])?  $options['length']  :   0;        if(substr($this->options['temp'], -1) != '/')    $this->options['temp'] .= '/';        $this->init();    }    /**     * 初始化检查     * @access private     * @return boolean     */    private function init() {        // 创建应用缓存目录        if (!is_dir($this->options['temp'])) {            mkdir($this->options['temp']);        }    }    /**     * 取得变量的存储文件名     * @access private     * @param string $name 缓存变量名     * @return string     */    private function filename($name) {        $name=md5($name);        if(C('DATA_CACHE_SUBDIR')) {            // 使用子目录            $dir   ='';            for($i=0;$i<C('DATA_PATH_LEVEL');$i++) {                $dir.=$name{$i}.'/';            }            if(!is_dir($this->options['temp'].$dir)) {                mkdir($this->options['temp'].$dir,0755,true);            }            $filename=$dir.$this->options['prefix'].$name.'.php';        }else{            $filename=$this->options['prefix'].$name.'.php';        }        return $this->options['temp'].$filename;    }    /**     * 读取缓存     * @access public     * @param string $name 缓存变量名     * @return mixed     */    public function get($name) {        $filename   =   $this->filename($name);        if (!is_file($filename)) {           return false;        }        N('cache_read',1);        $content    =   file_get_contents($filename);        if( false !== $content) {            $expire  =  (int)substr($content,8, 12);            if($expire != 0 && time() > filemtime($filename) + $expire) {                //缓存过期删除缓存文件                unlink($filename);                return false;            }            if(C('DATA_CACHE_CHECK')) {//开启数据校验                $check  =  substr($content,20, 32);                $content   =  substr($content,52, -3);                if($check != md5($content)) {//校验错误                    return false;                }            }else {            $content   =  substr($content,20, -3);            }            if(C('DATA_CACHE_COMPRESS') && function_exists('gzcompress')) {                //启用数据压缩                $content   =   gzuncompress($content);            }            $content    =   unserialize($content);            return $content;        }        else {            return false;        }    }    /**     * 写入缓存     * @access public     * @param string $name 缓存变量名     * @param mixed $value  存储数据     * @param int $expire  有效时间 0为永久     * @return boolean     */    public function set($name,$value,$expire=null) {        N('cache_write',1);        if(is_null($expire)) {            $expire =  $this->options['expire'];        }        $filename   =   $this->filename($name);        $data   =   serialize($value);        if( C('DATA_CACHE_COMPRESS') && function_exists('gzcompress')) {            //数据压缩            $data   =   gzcompress($data,3);        }        if(C('DATA_CACHE_CHECK')) {//开启数据校验            $check  =  md5($data);        }else {            $check  =  '';        }        $data    = "<?php\n//".sprintf('%012d',$expire).$check.$data."\n?>";        $result  =   file_put_contents($filename,$data);        if($result) {            if($this->options['length']>0) {                // 记录缓存队列                $this->queue($name);            }            clearstatcache();            return true;        }else {            return false;        }    }    /**     * 删除缓存     * @access public     * @param string $name 缓存变量名     * @return boolean     */    public function rm($name) {        return unlink($this->filename($name));    }    /**     * 清除缓存     * @access public     * @param string $name 缓存变量名     * @return boolean     */    public function clear() {        $path   =  $this->options['temp'];        $files  =   scandir($path);        if($files){            foreach($files as $file){                if ($file != '.' && $file != '..' && is_dir($path.$file) ){                    array_map( 'unlink', glob( $path.$file.'/*.*' ) );                }elseif(is_file($path.$file)){                    unlink( $path . $file );                }            }            return true;        }        return false;    }}
0 0