Override $_POST content

Question

My question is that how can I directly override POST/GET or simply $_REQUEST values in PHP. Most of the scripts I've seen, simply assign a variable to the POST key, and do their desired stuff with it.

I simply need to sanitize the inputs, but my condition is that: I don't have to use the variable for it. For example:

$_POST['name'] = "Example's";

But, I need to override this POST value to:

$_POST['name'] = 'Example\'s';

But, without assigning the variable. In this process, I directly need to edit the value of the POST keys. I tried creating a loop and then doing my filtration process within it but that didn't help me.

Any idea, how to make this run? I'm sorry if I'm not being clear.

Answer 1

Alright, found a fix.

Realized that it's as simple as:

function cleanInput($input) {

  $search = array(
    '@<script[^>]*?>.*?</script>@si',  
    '@<[\/\!]*?[^<>]*?>@si',           
    '@<style[^>]*?>.*?</style>@siU',   
    '@<![\s\S]*?--[ \t\n\r]*>@'       
  );

    $output = preg_replace($search, '', $input);
    return $output;
}

foreach ($_POST as $key => $value) {
   $_POST[$key] = mysqli_real_escape_string($con,cleanInput($value));
}