- var_dump: documentation ( source)
- preg_match: documentation ( source)
<?php
$secret = 9292929;
$data = "I will write the payload code in this pice of content <?php echo 111111; ?>that is sent to you previously";
$trigger = "a/e\0";
preg_match( "/$trigger/i", $data, $matches );
var_dump( $secret );