How to modify the configuration file in php?

How to modify the configuration file in php?

How to modify the configuration file in php:

1. Modify the boot page first

 
 
 端口：
 用户名：
 密码：
 数据库名：
  

2. Modify the page

$value) { //正则匹配对应的一行 $old_inf = "/define\('$key','.*?'\);/"; //要修改成的数据 $new_inf = "define('$key','$value');"; //替换 $string = preg_replace($old_inf,$new_inf,$string); } //写入配置文件 file_put_contents('config.php',$string); echo "修改成功";

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