quetes_variable.php

<?php
	$message="0@sn9sirppa@#?ia'jgtvryko1";
	$length=strlen($message);
	$keyData=strlen($message) / 2 ;

	$rest=substr($message, 5, $keyData);
	$replace=str_replace("@#?", " ", $rest);
	echo strrev($replace), ' ';

	$message="q8e?wsellecif@#?sel@#?setuotpazdsy0*b9+mw@x1vj";
	$length=strlen($message);
	$keyData=strlen($message) / 2 ;

	$rest=substr($message, 5, $keyData);
	$replace=str_replace("@#?", " ", $rest);
	echo strrev($replace), ' ';

	$message="aopi?sgnirts@#?sedhtg+p9l!";
	$length=strlen($message);
	$keyData=strlen($message) / 2 ;

	$rest=substr($message, 5, $keyData);
	$replace=str_replace("@#?", " ", $rest);
	echo strrev($replace);