reload

[just_nobody]

Is there a function in php to reload the page?

I need to redirect something and i was thinking that I change a variable in the link and reload the page then...
It's like when you post a post here, you get redirected to the board if you know what i mean?
How is this done?

[Jedi_Legend]

header("location: $url");

There can be no output to the browser before this.

[just_nobody]

euhm if I use that, I get this error:

Warning: Cannot add header information - headers already sent by (output started at c:\program files\apache group\apache\htdocs\redirect.php:9) in c:\program files\apache group\apache\htdocs\redirect.php on line 12...

did I do something wrong?

<?php

header("location: gb.php");

?>

gb.php is located in the same dir

[just_nobody]

If I use the full link, i get the same error

[Jedi_Legend]

There can be no browser output before this

If you have to have output before it, then you can use a simple java script to do the same thing:

<script language="JavaScript">

window.location='http://url.com';

</script>

[just_nobody]

This works 😃 thnx a lot

[zalath]

Bad idea. If you're going to redirect, the user won't see the output anyways, so why output? and if you must output, use output buffering.

Personally, I use ob_start() at the beginning and ob_end_flush() after the header(). I'm not sure if that's the best way, but it's certainly better than javascript redirects.

[just_nobody]

euhm I don't really get it...
Is it possible that you can give me an example?

this is what I'm doing.
I'm working in one php file and use varaibles that are giving by the URL. example/ $action.
then with a case I go check what $action is.

So i created a form, to fill in, something like a reply box on this forum:

<form action=\"$_PHPSELF?action=stuur\" method=\"POST\">

you see then it loads the page again, with $action=stuur.

then the sript sees that $action=stuur and connects to mysql to write the input.

and then I use the redirect:

echo "<script language=\"JavaScript\">
window.location='$_PHPSELF?action=vieuw';
</script>";

so the script sees that $action turned into vieuw and then shows every entry...

(i'm trying to write my own guestbook)

Is this way that bad?
Is there a way you could tell me what is better then? using your functions...

[Traduim]

In fact, redirect may not be automatic. So, in the lapse when the page A redirects to page B, depending on the browser, it's possible to have a "We're redirecting you" text.
That's why sometimes is nice to use Javascript or meta refreshes instead of header(location=).

By the way, on the first example given. Headers where already sent because anything (including white spaces) posted before <? is information outputted to browser before the header() function.

[zalath]

Header redirects work noticeably faster than js or meta refreshes, plus they're transparent so you can't go back to the redirecting page. This has it's advantages.

For output buffering, see the PHP manual.

[Jedi_Legend]

Output buffering, last time I checked, was disabled by default unfortunately. So that may not be an option. But header() redirects are better, and of course compatible with any browser.

[zalath]

Of course it's disabled - otherwise all output would be buffered. That's why there's a function called ob_start() that - guess what? - enables it! 😉