Question

I would like to know if it is possible to search through a $_POST variable and if a ";" is found then trigger an if statement.

For example:

if ";" is True{
 XXXXXX
} 

Answer 1

Sure, use strpos to check if the character is found in your string.

<?php

if(strpos($_POST['yourkey'],';')!==false){
    //if it gets here, a ; was found
    }

You have to use a strict check (=== or !==) for the position returned. Otherwise, if strpos returns a 0 because the ; is the first character in the string, it will resolve to boolean false, meaning the result is misinterpreted.