Sleep() doesn't delay on form action [closed] - php

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When I click on the submit button, I want a delay of 3 seconds and then a redirect.
My form will redirect to an other PHP site.
My code:
<button
class="button actionContinue scTrack:unifiedlogin-login-submit"
type="submit"
id="btnLogin"
name="btnLogin"
value="Login"
pa-marked="1">
Einloggen
</button>
</div></div>
<input type="hidden" name="" value="">
</form>
<?php
if (isset($_POST['submit']))
{
sleep(3);
// AND NOW action;
}
?>
Example
<?php
if (isset($_POST['submit']))
{
sleep(3);
// AND NOW action;
redirect('Location:next page.php');
}
?>
Why is it not working?

Answer 1

So the basic debugging in the comments shows that the $_POST['submit'] value which you expected to be there is actually not present. This is why your sleep is not working as the condition in your IF is not true.
So the next step is debug why you don't have that POST data. Which is because you don't have that as a form element. You will have btnLogin because that is the name you provided in your button.
name="btnLogin"
You can either test for the name you currently have:
isset($_POST['btnLogin']))
Or change the name in your button to Submit:
<button
class="button actionContinue scTrack:unifiedlogin-login-submit"
type="submit"
id="btnLogin"
name="Submit"
value="Login"
pa-marked="1">
Einloggen
</button>
EDIT: Try this as per your request in comments:
<?php
if (isset($_POST['btnLogin']))
{
sleep(3);
redirect('Location:next page.php');
}
?>