What am I doing wrong? (PHP/HTML submit button)

Question

HTML:

<form action="?" method = "post" >
<button type="submit" class="btn btn-default btn-lg" name = "submit" value = 'Submit' >Register</button>
</form>

PHP:

 <?php

    if(isset($_POST['submit'])){


    echo '<script language="javascript">';
    echo 'alert("message successfully sent")';
    echo '</script>';
    }
    ?>

The alerts don't come out when I click the button. The PHP does run if they're not enclosed within the 'if' statement.

Answer 1

You have to close If tag.

<?php

   if(isset($_POST['submit'])){
     echo '<script language="javascript">';
     echo 'alert("message successfully sent")';
     echo '</script>';
   } 
?>

Answer 2

<?php

if(isset($_POST['submit'])){
?>
<script>alert('message successfully sent');</script>
<?php
}
?>

<form method="post" >
<input type="submit" class="btn btn-default btn-lg" name="submit" value="Register" >
</form>

Answer 3

Error is there is no closing tag for if function

on here if(isset($_POST['submit'])){

and if your php code is inside same page then form action should be action="#" else if your php code inside another file action should be action="new_oage.php"

So code should be

<?php

    if(isset($_POST['submit']))
    {

        echo '<script language="javascript">';
        echo 'alert("message successfully sent")';
        echo '</script>';
    } //Missing

?>

Answer 4

you might want to change your if condition...because you have no input field in form

if($_SERVER["REQUEST_METHOD"] == "POST"){ 
}