Load PHP posted vars into array

DMeerholz · 07-03-2007, 08:18 AM

Hi,

------------
EDIT

Sorry, I just read what I typed in the heading... tried to edit it but I cant...

Load HTML posted variables into PHP variables ... makes a bit more sense.

------------

I am trying to write a function that will load vars posted from a web page into PHP vars with the SAME name.

Like this:

<form>
<input name="xxx" type="text" value="111">
<input name="yyy" type="text" value="222">
<input name="zzz" type="text" value="333">
</form>

When this is posted to my php, I want to call a function

LoadVars();

This will create the vars $xxx, $yyy and $zzz and set them to the correct values.

The code below gives a list of all html vars and values, but I am struggling to do what I mentioned above.

<?php
foreach($_POST as $key=>$val) {
echo '$_POST['.$key."] = $val<br>n";
}
?>

Any ideas???

Thanks.

nc3b · 07-03-2007, 10:02 AM

PHP Code:



<?
    foreach($_POST as $key=>$value)
    {
        $$key=$value;
    }
?>

What I don't like with this approach, is that it gives no control whatsoever. So I suggest you change the names of the inputs OR check something in the foreach, for instance, the fact that you named your variables with 3 letters, gave me an idea..

PHP Code:



<?
    foreach($_POST as $key=>$value)
    {
        if(strlen($key)!=3)
        {
            continue;
        }
        $$key=$value;
    }
?>

Edit: also check: http://www.php.net/manual/en/functio...-variables.php
And http://www.php.net/manual/en/function.extract.php
Cheers.

DMeerholz · 07-05-2007, 01:15 AM

Thanks nc3b, the is exactly what I wanted.

As for the control with 3 letter vars, the example I gave was just something I typed quick, they wont really be like that, but you are right, will probably add a prefix to all vars and check them that way.

graemef · 07-05-2007, 01:46 AM

What I do is to store the variables I'm expecting as a session variable array, and I then loop through the POST variable checking to see if they are in the list of expected variables any new ones are ignored (an error can be logged if you wish)