Online PHP editor | output for bebV8

@ 2016-01-18T11:22:30Z

<?php
$secret="rfig34r8gw4i3ve49hfvowgrv9wu3robwer";
$signed_request = "LgW-AUQF8gdSfmrGTb3rGUJxzH-3Lck2K0hDMO_d-Fg.eyJhbGdvcml0aG0iOiJITUFDLVNIQTI1NiIsImlzc3VlZF9hdCI6MTQ1MzExNjAwMiwicGFnZSI6eyJpZCI6IjM4MTM5OTczMDgyNyIsImFkbWluIjp0cnVlLCJsaWtlZCI6dHJ1ZX0sInVzZXIiOnsiY291bnRyeSI6ImdiIiwibG9jYWxlIjoiZW5fR0IiLCJhZ2UiOnsibWluIjoyMX19fQ";

list($encoded_sig, $payload) = explode('.', $signed_request, 2);

// decode the data
$sig = self::base64_url_decode($encoded_sig);
$data = json_decode(self::base64_url_decode($payload), true);

if (strtoupper($data['algorithm']) !== 'HMAC-SHA256') {
    die('Unknown algorithm. Expected HMAC-SHA256');
}

// check sig
$expected_sig = hash_hmac('sha256', $payload, $secret, $raw = true);
if ($sig !== $expected_sig) {
    die('Bad Signed JSON signature!');
}

print_r($data);

Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Fatal error: Uncaught Error: Cannot access "self" when no class scope is active in /in/bebV8:8 Stack trace: #0 {main} thrown in /in/bebV8 on line 8
Process exited with code 255.
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught Error: Cannot access "self" when no class scope is active in /in/bebV8:8 Stack trace: #0 {main} thrown in /in/bebV8 on line 8
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33: Fatal error: Uncaught Error: Cannot access self:: when no class scope is active in /in/bebV8:8 Stack trace: #0 {main} thrown in /in/bebV8 on line 8
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40: Fatal error: Cannot access self:: when no class scope is active in /in/bebV8 on line 8
Process exited with code 255.

preferences:dark modelive preview