<?php
 
 
// Begin the session
 
session_start();
 
 
// To avoid case conflicts, make the input uppercase and check against the session value
 
// If it's correct, echo '1' as a string
 
if(strtoupper($_GET['captcha']) == $_SESSION['captcha_id'])
 
    echo 'true';
 
// Else echo '0' as a string
 
else
 
    echo 'false';
 
 
?>
 
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