删除文件敏感文件以及不合格文件

<?
    $arr = array("a.txt","b.txt","c.txt");
    foreach ($arr as $value) {
        # code...
        // $fh = fopen($value, "a");
        
        if (filesize($value)<10) {
            # code...
            unlink($value);
            echo $value."小于10字节删除";
            continue;
        }
        $cont = file_get_contents($value);
        if(stripos( $cont,"fuck")){
            unlink($value);
            echo $value."含有文明用语删除";    
        }
    }
 ?>