{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://www.manongdao.com/data/attach/logo/logo.png', '推荐 欢心 的问题《Can't set cookie in Wordpress plugin after the》','https://www.manongdao.com/q-1289165.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
When I set a cookie in a Wordpress plugin, I get the "headers already sent" error. Can someone suggest how I can fix this?
Warning: Cannot modify header information – headers already sent by (output started at /home/content/53/7742253/html/wordpress/wp-content/themes/twentyten/header.php:11) in /home/content/53/7742253/html/wordpress/wp-includes/pluggable.php on line 692,693,694
my code:-
if(isset($_REQUEST['id']) && !is_user_logged_in())
{
require_once( ABSPATH . WPINC . '/registration.php' );
$registration = get_option( 'users_can_register' );
global $wpdb;
$user_id = $wpdb->get_var( $wpdb->prepare("SELECT user_id FROM
$wpdb->usermeta WHERE
meta_key = 'id' AND meta_value =%s",$id) );
if ( empty($user_id) )
{
$wp_user_obj = get_user_by('email', $email);
$user_id = $wp_user_obj->ID;
}
if ( $user_id)
{
wp_set_auth_cookie( $user_id );
wp_set_current_user( $user_id );
if ( isset( $_REQUEST['redirect_to'] ) && !empty(
$_REQUEST['redirect_to'] ) )
{
wp_redirect( home_url() );
}
else
{
wp_redirect(home_url() );
}
}
else
{
$userdata = array();
$user_id = wp_insert_user($userdata );
wp_new_user_notification($user_id,$user_pass);
if ( $user_id )
{
$creds = array();
$creds['user_login'] = $username;
$creds['user_password'] = $user_pass;
if ( !empty( $remember ) )
{
$creds['remember'] = true;
}
$user = wp_signon( $creds, true );
update_usermeta( $user_id,'id',esc_attr( $_REQUEST['id']));
update_usermeta( $user_id,'fname',esc_attr( $_REQUEST['fname']));
update_usermeta( $user_id,'lname',$_REQUEST['lname']);
update_usermeta( $user_id, 'email',esc_attr( $_REQUEST['email']) );
wp_redirect(home_url() );
}
}
}
global $user_ID; $user = get_userdata( $user_ID );
if(is_user_logged_in())
{
echo $user->user_login ;
}
and heder.php line:- `<html <?php language_attributes(); ?>>`
You're calling your
set_cookiesfunction too late. At the time you call it, output has already started. You need call it before any output has started, because cookies can not be set if output has already started (see as well:setcookieDocs).In your case before
header.phpline 11 is being executed.That's merely before the theme get's loaded.
You can avoid header modification warning messages by buffering your source, before it makes it to the browser. If you do not have access to php.ini you can add
php_value output_buffering 4096to your .htaccess or you can addob_start("ob_gzhandler");at the top andob_end_flush()at the bottom of your wordpresses root index.php