[HELP] How do I protect against a $_GET variable when using MySQLi [HELP]

[Trinix]

Hey,

So i'm doing a small project and I wondered how I can protect a $_GET variable in this class:

<?php
 
class application {
 
public $config;
 
public function __construct() {
$this->loadConfig();
 
if($_GET['p'] == '' || strlen($_GET['p']) < 1) {
$this->url = 'index';
} else {
$this->url = $_GET['p'];
}
}
}
 
?>

I also have a MySQLi class.

 

[Markshall]

I'm not the best there is at MySQLI but I believe it is

$dbclass->escape_string($_GET['p']);

 

[Ecko]

I'm not the best there is at MySQLI but I believe it is

$dbclass->escape_string($_GET['p']);

That's correct, just change $dbclass to whatever is establishing the MYSQLi connection.