IFrames and PHP

[Cless]

I need to create an iFrame, however, I need to make the PHP executed before it be global. For example:

 

<?php

$hi="blah";

?>

<iframe src='frame.php' width='100' height='350'>

 

Then, in "frame.php", the iFrame I am calling, I would want to be able to use the variable I defined before it ($hi). Not really a very practical example, but yeah.

 

Thanks.

[premiso]

You cannot do that with PHP. The variable would have to be passed to the frame.php via Javascript or GET.

 

This would allow you to use $_GET['hi'] to get that variable:

 

<?php

$hi = url_encode("blah");
$another = url_encode("hello bob");

?>

<iframe src='frame.php?hi=<?php echo $hi; ?>&another=<?php echo $another; ?>' width='100' height='350'>

 

url_encode ensures that the string is passed correctly. Then in the frame.php script:

 

<?php
$hi = isset($_GET['hi'])?$_GET['hi']:null;
$another = isset($_GET['another'])?$_GET['another']:null;

if (!is_null($hi)) 
    echo "You passed in {$hi} for the hi.";

if (!is_null($another))
    echo "You passed in {$another} for the another.";
?>

 

A very simple example, but should get the point across.

[Cless]

Ah, damn. Dx Thanks!

[soak]

Would it be possible to use the $_SESSION var or would it not be guaranteed to be set by the time the iframe was called??

[mrMarcus]

Would it be possible to use the $_SESSION var or would it not be guaranteed to be set by the time the iframe was called??

it would be possible, yes .. but as you said, no guarantee it'd be set by the time it was needed.

[premiso]

Would it be possible to use the $_SESSION var or would it not be guaranteed to be set by the time the iframe was called??

 

I think it would be set. As long as they had session_start() at the top of each page. There is no reason for it not to as PHP is done on the server not the client. The guarantee would actually be 100% certain due to that fact.