php and form variables

[whiterecluse]

Is there an easy way to retrieve all of the variables from a form? Using $_POST for every variable would take a lot of code for what I wanna do. I'm hoping theres a way I can do it by using this code or a variation of it:
[code]
foreach($HTTP_POST_VARS as $key => $val)
{
//do something with the val....
}
[/code]

Pointing me to any tutorials would be great too :)

[matto]

That's the right idea, but use $_POST rather than $HTTP_POST_VARS...

:)

[JasonLewis]

that would select EVERYTHING in the $_POST array, is that what your wanting to do?

(damn! people always beat me!:))

[whiterecluse]

I want the equivalent of
[code]
$var1 = $_POST['var1'];
$var2 = $_POST['var2'];
$varX = $_POST['varX'];
[/code]

Only through a loop. Is there a way to do this?

[kenrbnsn]

You want to use the concept of [url=http://www.php.net/manual/en/language.variables.variable.php]variable variables[/url]:

[code]<?php
foreach($_POST as $key => $value)
    $$key = $value;
?>[/code]

Ken

[whiterecluse]

That's what I thought I needed to use but I can't seem to grasp the concept.
$$key = $val;
does this mean that a variable named $val1 will be stored in $$key?

What I want is to be able to compare the value of one variable against the value of another using variable variables (I think I would use them)

[HuggieBear]

If you're form had two fields, [i]username[/i] and [i]realname[/i] and I submitted the form with my details (HuggieBear and Richard) then PHP would get the following variables:

[code=php:0]$_POST['username']
$_POST['realname'][/code]

If you want a these to be variables with the same name as the key, then do this...

[code]<?php
foreach($_POST as $key => $value)
     $$key = $value;
?>[/code]

This means that if I want to echo Richard I can type [code=php:0]echo $realname;[/code] not [code=php:0]echo $$key;[/code]

The above code has created variables with the names of the keys of the $_POST array.

Regards
Huggie

[whiterecluse]

You're awesome! That's what I wanted  ;D