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78 lines
2.0 KiB
78 lines
2.0 KiB
7 months ago
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<?php
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/**
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* 文件缓存
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* Cache_File::set('adf/aer/b', 123);
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* Cache_File::get('adf/aer/b');
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*/
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class Cache_File {
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static $instance;
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public $path = APPLICATION_PATH;
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public $time;
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/**
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* 单例
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* @return Cache_File
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*/
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static function &instance() {
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if (self::$instance === null) {
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self::$instance = new Cache_File();
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self::$instance->time = time();
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}
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return self::$instance;
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}
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/**
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* 得到缓存
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* @param $pKey
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* @param int $pExp false:不作判断直接返回, 0:不判断有效期, 1+:判断有效期
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*
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* @return array
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*/
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static function get($pKey, $pExp = 3600) {
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$instance = &Cache_File::instance();
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# 不作判断，直接返回
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if(false === $pExp) return unserialize(file_get_contents($instance->path . $pKey));
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# 判断有效性
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if (is_file($instance->path . $pKey) && (!$pExp || (filemtime($instance->path . $pKey) > $instance->time - $pExp))) {
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return unserialize(file_get_contents($instance->path . $pKey));
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}
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return false;
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}
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/**
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* 写缓存
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* @param $pKey
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* @param $pVal
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*/
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static function set($pKey, $pVal) {
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$instance = &Cache_File::instance();
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# 更新缓存
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if (!is_file($pKey) && false !== strpos($pKey, '/')) {
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$tPath = explode('/', $pKey);
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if (!$tPath[0]) unset($tPath[0]);
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array_pop($tPath);
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$tPath = $instance->path . implode('/', $tPath);
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file_exists($tPath) || @mkdir($tPath, 0777, true);
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}
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# 写缓存
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//file_put_contents('../cache/1.txt',time());
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$a = serialize($pVal);
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$res = file_put_contents($instance->path .'/public/cache/serialize/'. $pKey, serialize($pVal));
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}
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static function del($pKey){
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$instance = &Cache_File::instance();
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@unlink($instance->path . $pKey);
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}
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/**
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* 文件修改时间
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* @param $pKey
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* @return int
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*/
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static function mtime($pKey){
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$instance = &Cache_File::instance();
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return is_file($instance->path . $pKey)? filemtime($instance->path . $pKey): 0;
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}
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}
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