我在安装网站时遇到问题。我想进行网站安装，但我需要将其插入我的config.php文件中的表单。
这是config.php文件代码：
$conf = $TMPL = array();
$conf['host'] = '';
$conf['user'] = '';
$conf['pass'] = '';
$conf['name'] = '';
$conf['url'] = '';
$conf['mail'] = '';
我需要一个将示例"localhost"插入$conf['host'] = 'localhost'; 的表单
<form action="" method="POST">
<input type="text" name="host">
<input type="text" name="user">
<input type="text" name="pass">
<input type="text" name="name">
<input type="text" name="url">
<input type="text" name="mail">
<input type="submit" name="submit">
</form>
<?php
if(isset($_POST['submit'])) {
$host = $_POST['host'];
$user = $_POST['user'];
$pass = $_POST['pass'];
$name = $_POST['name'];
$url = $_POST['url'];
$mail = $_POST['mail'];
$configfile = "config.php";
file_put_contents($configfile, "<?php
'$conf = array(); '$conf['host'] = '". $host ."'; '$conf['user'] = '". $user ."'; '$conf['pass'] = '". $pass ."'; '$conf['name'] = '". $name ."'; '$conf['url'] = '". $url ."'; '$conf['mail'] = '". $mail ."';; ");
}