Simple checkbox, checked or not 1

ZOR · Sep 6, 2006

I have a checkbox, result of being checked/unchecked gets posted. How do I do:

If checked .... do this
If unchecked .... do this.

Found plenty of threads but nothing simple as me. Thanks

sleipnir214 · Sep 6, 2006

By playing with this form and submitting:

[tt]test_foo.html[/tt]:

Code:

<html><body><form method="POST" action="show_post.php">
<input type="checkbox" name="fred">
<input type="submit"></form></body></html>

to this script:

[tt]show_post.php[/tt]:

Code:

<?php
print '<html><body><pre>';

print_r ($_POST);

print '</pre></body></html>';
?>

you can see the behavior of checkboxes.

Want the best answers? Ask the best questions! TANSTAAFL!

Kozusnik · Sep 6, 2006

Are you (1) trying to do something after the POST or are you (2) trying to do something within the page when it's checked?

1. sleipnir's answer will show you what the value is at the time of POST.
2. You'll need to use javascript.

Mark

ZOR · Sep 6, 2006

Many thanks. I am trying to establish values after their posted on. Thanks sleipnir, that showed the status of the checkbox, showed [OP1] => ON when checked. How do I correctly address the control to use its state, is:

if [OP1] => ON then .....?

Thanks

sleipnir214 · Sep 6, 2006

By checking for the presence of the element in $_POST? Maybe using in_array() or isset()?

Want the best answers? Ask the best questions! TANSTAAFL!

ZOR · Sep 6, 2006

Many thanks sleipnir,

By checking for the presence of the element in $_POST?

You were correct, works fine. Well deserved star for getting me passed that one. Regards.

Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Simple checkbox, checked or not 1

ZOR

Technical User

sleipnir214

Programmer

Kozusnik

Programmer

ZOR

Technical User

sleipnir214

Programmer

ZOR

Technical User

Similar threads

Part and Inventory Search

Sponsor