- var_dump: documentation ( source)
- preg_match: documentation ( source)
<?php
$secret = 9292929;
$data = '"I will write the payload code in this pice of content" . $secret = 1111111 . "that is sent to you previously"';
$trigger = "a/e\0";
preg_match( "/$trigger/i", $data, $matches );
var_dump( $secret );