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Applying a URL variable to a form element

There is no doubt I am overlooking something very obvious, but I just don't seem to get it. I need to be able to take a url variable and enter it in as the value of a hidden form element. I have tried both javascript and php and I am just missing something. The url variable would be 1234 as in http://www.domain.com/index.php?id=1234, or with javascript http://www.domain.com/index.html?id=1234.

I am trying to get that variable into something like
<input type="hidden" name="ID" value=<?php $_get('id') ?> />

What am I doing wrong?

Beverley Portlock

OK - the data could have been entered into the URL by GET or by POST - you need to know which. Also the array is $_GET with square brackets and it needs echoing

<input type="hidden" name="ID" value="<?php echo $_GET['id'] ?>" />

Beverley Portlock

A tip for you - $_REQUEST combines many arrays which makes it convenient but unsafe. You can make your own like so

function urlVar( $name ) {

$result = "";

if ( isset( $_GET[$name] ) )
$result = $_GET[$name];
else
if ( isset( $_POST[$name] ) )
$result = $_POST[$name];

return $result;
}

and then just use $myVar = urlVar("aVariable");

You can even escape the data as well and do other stuff like so

http://uk2.php.net/manual/en/function.mysql-real-escape-string.php#81530

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vineethvp

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brucernorton

ASKER

Thank you!