When I press okay, everything works fine so far. But when I press cancel, it does the exact thing that if I pressed okay...what's wrong with my code? :/

<?php if(isset($_POST['supprimer'])) { ?>   
    <script>var r = confirm('Etes-vous sur de vouloir supprimer?');
    if(r == true) { <?php $object->supprimer($_POST['rowID']); ?> 
    }</script> 
    <?php } ?>

When I press okay, everything works fine so far. But when I press cancel, it does the exact thing that if I pressed okay...what's wrong with my code? :/

<?php if(isset($_POST['supprimer'])) { ?>   
    <script>var r = confirm('Etes-vous sur de vouloir supprimer?');
    if(r == true) { <?php $object->supprimer($_POST['rowID']); ?> 
    }</script> 
    <?php } ?>

• javascript
• php

• console.log(typeof(r), r); – Adrian Preuss Commented Mar 25, 2014 at 20:36
• I can't reproduce. – Daedalus Commented Mar 25, 2014 at 20:37
• you can try if(r) instead if(r == true) – Fisherman Commented Mar 25, 2014 at 20:37
• Add <?php header('Content-Type: text/plain'); ?> at the very top and then refresh your browser, take a look and read the code as the browser would "read" to execute it ... . – hakre Commented Mar 25, 2014 at 20:42
• 1 The way it works is like this: browser makes request -> server receives request -> server executes PHP -> server sends response/HTML -> browser receives response/HTML -> browser parses HTML / executes JS – Felix Kling Commented Mar 25, 2014 at 20:50

3 Answers 3

Your inner PHP script executes regardless of the JavaScript conditional since PHP runs before the page is rendered, thus, before JavaScript. You would need to use ajax or a page reload in order to have PHP that runs on a conditional JavaScript statement.

PHP runs before JavaScript.

$object->supprimer($_POST['rowID']) 

is already submitted when browser load JavaScript.

<?php
$supreme = 'yes';
if(isset($supreme)) { ?>
<script>
var r = confirm('Etes-vous sur de vouloir supprimer?');
alert(r);
if(r == true) { 
 alert('pressed Yes');
}
else
{alert('pressed Cancel');} 
</script> 
<?php } ?>

Try the above code - it will reflect the value chosen in the confirm popup.