what $_REQUEST will return when same values sent by GET and POST?

Question

I am trying to make a form in PHP, I used user ID to show data in form by GET, but after submitting form by POST i stored user ID in a hidden field..

While trying this i just became confused with GET, POST and REQUEST.

See this situation

<form action="script.php?id=777" method="post">
     ID: <input type="text" name="id" />
     <input type="submit" value="Send" />
</form>

Let's suppose i enter '888' in text field when this form will be submitted, what value $_REQUEST['id']; should provide?

It will be same in all php versions?

What will happen if I left text field blank?

and what will happen if I change action as action="script.php?id="?

Are you not able to check this at your end. how much time it will take? — Alive to die - Anant, Aug 06 '15 at 06:09
It's working unexpected some times.. I just wanted be sure that is there any rule for it. So that i can rely on it before using it in project. — Aniket Singh, Aug 06 '15 at 06:12
The best thing is don't use `$_REQUEST`. why - http://stackoverflow.com/questions/2142497/whats-wrong-with-using-request — Alive to die - Anant, Aug 06 '15 at 06:13

score 3 · Answer 1 · edited May 23 '17 at 10:26

3

01

If form is in post method

<form action="script.php" method="post">
     ID: <input type="text" name="id" />
     <input type="submit" value="Send" />
</form>

In script.php, you can get data by using

$id = $_POST['id'];//works
$id = $_REQUEST['id'];//works
$id = $_GET['id'];//Failed

02

If form is in get method

<form action="script.php" method="get">
     ID: <input type="text" name="id" />
     <input type="submit" value="Send" />
</form>

In script.php, you can get data by using

$id = $_GET['id'];//works
$id = $_REQUEST['id'];//works
$id = $_POST['id'];//Failed

You can refer $_REQUEST vs $_GET and $_POST and What's wrong with using $_REQUEST[]?

edited May 23 '17 at 10:26

Community

1
1

answered Aug 06 '15 at 06:12

Abdulla Nilam

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Thnx, but i just wanted to know that if `'?id=1'` is in url and `id = 2` is sent by POST then `$_REQUEST[''id] = ?`. – Aniket Singh Aug 06 '15 at 06:15
Ok, means i can't rely that always it will give `=1`, because i tried sometimes it give `=2`.. – Aniket Singh Aug 06 '15 at 06:21

score 3 · Accepted Answer · answered Aug 06 '15 at 06:20

The actual order is determined in the "request_order" setting in the PHP.ini file

; This directive determines which super global data (G,P,C,E & S) should
; be registered into the super global array REQUEST. If so, it also determines
; the order in which that data is registered. The values for this directive are
; specified in the same manner as the variables_order directive, EXCEPT one.
; Leaving this value empty will cause PHP to use the value set in the
; variables_order directive. It does not mean it will leave the super globals
; array REQUEST empty.
; Default Value: None
; Development Value: "GP"
; Production Value: "GP"
; http://php.net/request-order
request_order = "GP"

Usually the default setting is Get then Post. In this case you supply the id parameter as get AND as a post parameter. This means the $_REQUEST is populated with the $_GET first, then $_POST. Meaning $_REQUEST will reflect $_POST.

Thnx @Ronald.. that's why it was working differently in different systems, got technique behind it. thnx. — Aniket Singh, Aug 06 '15 at 06:28

what $_REQUEST will return when same values sent by GET and POST?

2 Answers2