Generally: debugging php $_POST

Question

I am wondering what is the best approach for debugging a $_POST PHP function, I seem to be losing data and the URL looks like a $_GET, I don't want to post the code as I want to learn how to properly debug PHP code if there is somewhat of a recipe on how to do this/some general guidelines I would appreciate them.

In short: After doing some reading for (oh about 8 hours trying to figure this out) I am really lost, what are the do's/don'ts?

use print_r($_POST); to print all post datas

Muthu Kumaran
– Muthu Kumaran

2012-12-06 12:06:47 +00:00
Commented Dec 6, 2012 at 12:06 — Muthu Kumaran
– Muthu Kumaran, Commented Dec 6, 2012 at 12:06
$_POST is a variable not a function

Jørgen R
– Jørgen R

2012-12-06 12:08:17 +00:00
Commented Dec 6, 2012 at 12:08 — Jørgen R
– Jørgen R, Commented Dec 6, 2012 at 12:08

user399666 · Accepted Answer · 2012-12-06 12:06:46Z

3

var_dump($_POST);

will give you a list of all POST variables.

<?php
echo '<pre>';
print_r($_POST);
echo '</pre>';
?>

will also work.

answered Dec 6, 2012 at 12:06

user399666

20k7 gold badges49 silver badges68 bronze badges

Sign up to request clarification or add additional context in comments.

9 Comments

user1868565 Over a year ago

It gave me a empty array with size 0. So I obviously did something wrong in my code hehe. Anyhow I will be sure to note that and use it aswell.

user399666 Over a year ago

If it's an empty array, no POST variables exist. Make sure that your form is correct.

user1868565 Over a year ago

I just double checked, the method is POST, however what is interesting is that dumping _GET gives me all the values I wanted in _POST.

user399666 Over a year ago

Are you sure that you've got method="post" and that the rest of your HTML is correct?

Epsil0neR Over a year ago

session doesnt keep _POST and _GET variables, it keeps only $_SESSION` variable with some session settings variables. I meant than when you submit form to another page with method="post", that page gets _POST data, but maybe in that page you again redirect somewhere?

|

Konrad Viltersten · Accepted Answer · 2012-12-06 12:25:41Z

1

Please try the following code.

print_r($_POST);

edited Dec 6, 2012 at 12:25

Konrad Viltersten

40.2k90 gold badges297 silver badges526 bronze badges

answered Dec 6, 2012 at 12:07

Developer-Sid

1,38211 silver badges9 bronze badges

Comments

Muthu Kumaran · Accepted Answer · 2012-12-06 12:07:35Z

0

use print_r($_POST); to print all post datas

answered Dec 6, 2012 at 12:07

Muthu Kumaran

18k5 gold badges50 silver badges72 bronze badges

Comments

moonwave99 · Accepted Answer · 2012-12-06 12:09:50Z

0

Check what's inside $_REQUEST:

var_dump($_REQUEST);

This will give you an array representation of you http request, and the method you are using [mostly GET/POST], in case you are using the wrong one.

answered Dec 6, 2012 at 12:09

moonwave99

22.9k3 gold badges48 silver badges71 bronze badges

Collectives™ on Stack Overflow

Generally: debugging php $_POST

4 Answers 4

9 Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

9 Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related