Online PHP editor | output for p4Qll

@ 2017-07-11T15:05:18Z

<?php

$submit = true;
if($submit) {

        if(!$_POST["email"]) {

            $error = 'Please Enter Your Email';

        }
        if ($error) {

            $result='<div class="alert alert-danger"><strong>There were error(s) in submitting the form: ' .$error. '</strong></div>';



         } else {
            if(mail("colin.vrugteman@hotmail.com", "Newsletter Sign Up", "Email: ".$_POST['email'])) {

              $result='<div class="alert alert-success">Thank You. You have been signed up for our newsletter!</div>';
            }
         }
}

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: Warning: Undefined array key "email" in /in/p4Qll on line 6
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 Warning: Undefined array key "email" in /in/p4Qll on line 6
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33: Notice: Undefined index: email in /in/p4Qll on line 6
Output for 7.3.32 - 7.3.33

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