PHP code in string - php

Question

I was amazed I didn't found answer on Google for this answer.
So basically I have a PHP code which have to be stored in a variable as a string. Unfortunately PHP recognize the opening and ending tag not as a string but a PHP code... I want it as a string :)
$settings_string =
'
<?php
//Locker ID
$userToSearch = '.$_POST["usertosearch"].';
//User Folder
$userFolder = '.$folder.';
//User Link
$userLink = '.$_POST["userlink"].';
// Username and pass
$affiliateuser = '.$_POST["affiliateuser"].';
$affiliatepassword = '.$_POST["affiliatepassword"].';
?>
';

Answer 1

you can use like this.
if u tell your purpose. so i can give you better than this.
$settings_string ='
<?php
//Locker ID
$userToSearch = \'.$_POST["usertosearch"].\';
//User Folder
$userFolder = \'.$folder.\';
//User Link
$userLink = \'.$_POST["userlink"].\';
// Username and pass
$affiliateuser = \'.$_POST["affiliateuser"].\';
$affiliatepassword = \'.$_POST["affiliatepassword"].\';
?>
';
Now you have to use like this
$file = fopen('file_name.php', 'w');
fwrite($file, $settings_string);

Answer 2

If you want the value of the $_POST injected in there you still need to quote it properly in the output.
$settings_string =
'
<?php
//Locker ID
$userToSearch = "'.$_POST["usertosearch"].'"; //add them quotes!!!!
//User Folder
$userFolder = "'.$folder.'";
//User Link
$userLink = "'.$_POST["userlink"].'";
// Username and pass
$affiliateuser = "'.$_POST["affiliateuser"].'";
$affiliatepassword = "'.$_POST["affiliatepassword"].'";
?>
';
I'll assume $_POST["usertosearch"] = 'user' currently in your output would be this.
$userToSearch = user;
When instead you want
$userToSearch = "user";
Above you will see the added double quote, to properly quote the strings in the output file. That file still has to have valid syntax.
As a note, if any of the post values contain " your gonna have issues, unless you do addslashes() for them.
For example
$userLink = "'.$_POST["userlink"].'";
Assume this is $_POST["userlink"] = 'link' OR
$userLink = "link";
See the issue with that. When you'll want this
$userLink = "link";

Answer 3

Your looking for eval
<?php
$settings_string ='
//Locker ID
$userToSearch = '.$_POST["usertosearch"].';
//User Folder
$userFolder = '.$folder.';
//User Link
$userLink = '.$_POST["userlink"].';
// Username and pass
$affiliateuser = '.$_POST["affiliateuser"].';
$affiliatepassword = '.$_POST["affiliatepassword"].';
';
eval($settings_string);