header() problems!

deep

Hi,

I want to go to another page and I use the header() function (since thats the only one i know of that will go to another URL).

But the problem is that I need to go to a diffrent URL after the page has been created in the browser and thats why i get an error saying: Warning: Cannot modify header information - headers already sent.........

How can I fix this?

Thanks!

lilleman

In your case I would recommend using Javascript.

<script type="text/javascript">
 window.location = "page.php";
</script>

deep

oh, but is it "safe" to use javascript? I hear that only some browsers can use it?

lilleman

Well, maybe some old browsers does not support Javascript but in my opinion that group is so small that you can ignore that fact...

laserlight

I would advise using a meta refresh in conjunction with a link that is clearly marked out.

Randomly pushing users to other pages is rather rude, IMO.

deep

Randomly pushing users to other pages is rather rude, IMO.

not sure what you mean?

laserlight

In other words, you should provide adequate warning that the user will be re-directed to another page.

Using the JS example would re-direct the user as soon as the page is loaded, which may or may not be what you want.

deep

oh, ok. in this case its a registration form that redirects when the user clicks 'register'.

lilleman

In that case it's acceptable just to redirect the user (according to me). What do you think, laserlight?

yelvington

Umm ... a thing that takes you to another page when you click on it is usually called a "link." :-)

Why do you think you need to send a redirect to accomplish this?

deep

well, i got one page where you fill in all your info. Then you get posted to another page where my php code is and if a statement is true then the user needs to get redirected from that page to the next.

I have edited some of that now though so the code is where the form is now.

yelvington

Sounds like all you need to do is invert the order of the code you have written.

if($_POST['submit']){
// process input
// then redirect
header($success_url);
} else {
// output the HTML form
}

... instead of

<various html at top>
<?
if($_POST['submit']){ // et cetera