Create a Php file with code - php

Question

What I'm trying to do is to make an installation file where the user enters the database, username, password, and host as a first step in a php system installation.
Also I want to create a page where user give his model page name and variable names ( $name,$email ) then automatically create a file with php code like
class Admin extends MyBase
{
private $name,$email;
public function setName($v)
{
$this->name = $v;
}
public function setEmail($v)
{
$this->email = $v;
}
public function getName()
{
return $this->name;
}
public function getEmail()
{
return $this->email;
}
public function Insert()
{
$sql = "insert into
admin(name,email)
values('".$this->ms($this->name)."','".$this->ms($this->email)."')";
return $this->MyCommand($sql);
}
}
with code format.

Answer 1

Finally I can do a example
<?php
if (isset($_POST["Submit"])) {
$string = '<?php
$dbhost = "'. $_POST["dbhost"]. '";
$dbuname = "'. $_POST["dbuname"]. '";
$dbpass = "'. $_POST["dbpass"]. '";
$dbname = "'. $_POST["dbname"]. '";
$prefix = "'. $_POST["prefix"]. '";
$user_prefix = "'. $_POST["user_prefix"]. '";
$dbtype = "'. $_POST["dbtype"]. '";
?>';
$fp = fopen("config.php", "w");
fwrite($fp, $string);
fclose($fp);
}
?>
<form action="" method="post" name="install" id="install">
<p>
<input name="dbhost" type="text" id="dbhost" value="">
DB Host
</p>
<p>
<input name="dbuname" type="text" id="dbuname">
DB Username
</p>
<p>
<input name="dbpass" type="password" id="dbpass">
DB Pass </p>
<p>
<input name="dbname" type="text" id="dbname">
DB Name </p>
<p>
<input name="prefix" type="text" id="prefix">
DB Prefix</p>
<p>
<input name="user_prefix" type="text" id="user_prefix">
Userprefix</p>
<p>
<input name="dbtype" type="text" id="dbtype">
DB Type </p>
<p>
<input type="submit" name="Submit" value="Install">
</p>
</form>