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F函数bug修正建议

Jun 07, 2016 am 11:44 AM

删除缓存也很简单,使用:
F('data',NULL);
复制代码
第二个参数传入NULL,则表示删除标识为data的数据缓存。
支持批量删除功能,尤其是针对子目录缓存的情况,假设我们要删除user子目录下面的所有缓存数据,可以使用:
F('user/*',NULL);
又或者使用过滤条件删除,例如:
F('user/[^a]*',NULL);
文档中说删除子缓存目录内容用F('user/*',NULL);或者F('user/[^a]*',NULL);经测试发现无效。查看系统定义的F函数:function F($name, $value='', $path=DATA_PATH) {<br>     static $_cache = array();<br>     $filename = $path . $name . '.php';<br>     if ('' !== $value) {<br>         if (is_null($value)) {<br>             // 删除缓存<br>             return unlink($filename);<br>         } else {<br>             // 缓存数据<br>             $dir = dirname($filename);<br>             // 目录不存在则创建<br>             if (!is_dir($dir))<br>                 mkdir($dir);<br>             return file_put_contents($filename, strip_whitespace("<?php \nreturn " . var_export($value, true) . ";\n?>"));<br>         }<br>     }<br>     if (isset($_cache[$name]))<br>         return $_cache[$name];<br>     // 获取缓存数据<br>     if (is_file($filename)) {<br>         $value = include $filename;<br>         $_cache[$name] = $value;<br>     } else {<br>         $value = false;<br>     }<br>     return $value;<br> }当$value为null时执行删除操作即unlink($filename);而$filename = $path . $name . '.php';当我们传入F('user/*',NULL);时,就变成缓存目录/user/*.php,也就是执行了unlink(/user/*.php),而实际并没有这个文件,所以最后没有文件被删除。
改进建议:1。自己获取缓存目录下所有文件名,可以用scandir或者glob函数,然后循环删除。
2。修改F函数,增加对子目录内容的循环判断。或者直接删除缓存子目录
总之F函数没有实现批量删除。

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