php 生成配置文件 file_put_contents

<?php
$files = "aa.php";
            $content = '<' . "?php/r/n" .
                       '$this->mysql_config_cache_file_time = chddd' . ";/r/n" .
                       '$this->timeline = aaa' . ";/r/n" .
                       '$this->timezone = bb' . ";/r/n" .
                       '$this->_platform = ccc' . ";/r/n?" . '>';

            @file_put_contents($files, $content, LOCK_EX);
?>