how to solve header location warning wordpress

Question

Hi I want to create a simple login code to redirect each user to his own profile page.

I'm using a page "CleanPage" as a template for my php code.

I tried header Location and wp_redirect but both shows this error:

Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/wp-includes/general-template.php:1076) in /var/www/html/wp-content/themes/sydney/CleanPage.php on line 43

I wanted simple redirection like this:

header("Location: auth_customer.php?id=$userid");

Any help please?

try this: `header("Location: auth_customer.php?id=" . $userid);` — Ronnie Oosting, Aug 27 '18 at 13:36
https://stackoverflow.com/questions/8028957/how-to-fix-headers-already-sent-error-in-php — popeye, Aug 27 '18 at 13:36
you have to expand on your answer as to where exactly are you using this piece of code — popeye, Aug 27 '18 at 13:37
@RonnieOosting also it shows the same problem (actually my code works well without wordpress, problems started when I switched to wp) — Yosra MH, Aug 27 '18 at 13:41
@kenzotenma I have edited my post: I'm writing my code in a php page inside the theme (template) — Yosra MH, Aug 27 '18 at 13:42
try `header("Location: 'FULL_PATH'/auth_customer.php?id=" . $userid);` — Ronnie Oosting, Aug 27 '18 at 13:46
@RonnieOosting I don't think this will ever work. she's trying to send header information alongside the main content. any kind of header information has to be sent before sending the main response. — popeye, Aug 27 '18 at 13:53
you should give this a read: https://codex.wordpress.org/Plugin_API/Action_Reference/send_headers -- this may solve your problem — popeye, Aug 27 '18 at 13:53

score 3 · Answer 1 · answered Aug 27 '18 at 13:57

3

though I've already posted the link in the comment section above. I believe this should definitely solve your problem

<?php
add_action( 'send_headers', 'add_header_xua' );
function add_header_xua() {
    // your login logic or whatever should go here
    // ....
    header("Location: auth_customer.php?id=$userid");
}

answered Aug 27 '18 at 13:57

popeye

481
1
4
16

also this code still give me the same warning :( I used it in my CleanPage.php, should I write it on functions.php? – Yosra MH Aug 27 '18 at 14:13
I can see the logic: it's as u said, sending my custom header before calling that 'wp_head();' but even this didn't work :(( maybe it's my bad that I didn't know how to use it – Yosra MH Aug 28 '18 at 10:16

score 1 · Answer 2 · answered Aug 27 '18 at 13:43

1

Add an action to "wp_loaded" with a custom function and then make redirect within it.

<?php
add_action ('wp_loaded', 'ss_custom_redirect');
function ss_custom_redirect() {
    $redirect = 'http://example.com/redirect-example-url.html';
    wp_redirect($redirect);
    exit;
}     
?>

answered Aug 27 '18 at 13:43

Shashank Sharma

585
3
14

I still get that worning: Warning: Cannot modify header information - headers already sent by (output started at /var/www/html/wp-includes/general-template.php:1076) in /var/www/html/wp-includes/pluggable.php on line 1219 – Yosra MH Aug 27 '18 at 13:54

score 1 · Accepted Answer · answered Aug 27 '18 at 13:53

1

The easiest one is to use 'meta refresh', try like this <?php echo "<meta http-equiv='refresh' content='0;url=auth_customer.php?id=$userid'>"; ?>.

answered Aug 27 '18 at 13:53

Outsource WordPress

3,749
2
10
23

this actually works well, but I'm not sure if I can still conserve sessions with this – Yosra MH Aug 27 '18 at 14:15
1

It's just equivalent of PHP `header()` so anything work with it will work with this too. – Outsource WordPress Aug 27 '18 at 14:24

score 1 · Answer 4 · answered Aug 27 '18 at 15:13

1

Try this:

wp_redirect( home_url('/auth_customer.php?id='.$userid) ); exit;

answered Aug 27 '18 at 15:13

Bijaya Kumar Oli

2,007
19
15

still the same warning and it's because I'm forcing wp to overwrite the header ... – Yosra MH Aug 28 '18 at 09:56

score 1 · Answer 5 · answered Aug 27 '18 at 15:51

1

You need to place the redirect function before get_header() / wp_head() for example:

if( //some logic here ) { 
  wp_redirect('page1');
} else {
  wp_redirect('page2');
}
...
get_header();

answered Aug 27 '18 at 15:51

Ash0ur

1,505
2
8
11

1

There must be something is sent / printed from the server before the redirect, maybe happens before calling the custom template. – Ash0ur Aug 28 '18 at 11:31

how to solve header location warning wordpress

5 Answers5