PHP重定向 - 突破iframe

Question

I know this is very basic and I've never had the need before, but I want a PHP redirect to break out of any iframe (if applicable).

Is this possible?

I know that PHP sends a header to the browser, so it should be, but I can't see this anywhere.

So if I use this code then it always changes the parent and not just any iframe window:

<?php
header('Location: http://domain.com/');
?>

Of course this works, but I need it done from PHP:

<a href="page.php" target="_parent">

I'm using Symfony2 so will need to get it working in that too.

No JavaScript. PHP only (if possible).

Answer 1

You can't do it in PHP - if the browser is trying to load the page in a frame, then sending a Location header will simply load the new page in the frame too.

If you're trying to stop others from putting your site in a frame, you'd have to use JavaScript to detect it and do the redirect, otherwise target="_top" is the right approach.