Im trying to make front end posting page but, sometime 'wp_redirect' is not working with 'cannot modify header information' error. adding data is working well but I don't know why is working well without error sometime, showing error sometime..

Sorry for my bad english, please help me out... and I'm not a programmer just understand some codes anyway...

Many thanks!!

    if (isset ($_POST['post_title'])) {
        $title =  $_POST['post_title'];
    } else {
        echo 'Please enter a game  title';
    if (isset ($_POST['description'])) {
        $description = $_POST['description'];
    } else {
        echo 'Please enter the content';

    $new_post = array(
        'post_title'    => $title,
        'post_content'  => $description,
        'post_status'   => 'publish',
        'post_type' => 'property',  
        'tax_input' => array( 'property_type' => array($property_type), 'suburbs' => array($suburbs) ) 

    //save the new post and return its ID
    $pid = wp_insert_post($new_post); 

       //add thumbnail
        if (!function_exists('wp_generate_attachment_metadata')){
                require_once(ABSPATH . "wp-admin" . '/includes/image.php');
                require_once(ABSPATH . "wp-admin" . '/includes/file.php');
                require_once(ABSPATH . "wp-admin" . '/includes/media.php');
             if ($_FILES) {
                foreach ($_FILES as $file => $array) {
                    if ($_FILES[$file]['error'] !== UPLOAD_ERR_OK) {
                        return "upload error : " . $_FILES[$file]['error'];
                    $attach_id = media_handle_upload( $file, $pid );
            if ($attach_id > 0){
                //and if you want to set that image as Post  then use:
            }  //add thumbnail end

    update_post_meta($new_post_id, 'tax_input', $property_type);
    update_post_meta($new_post_id, 'tax_input', $suburbs);

    //insert custom fields

    $url = get_permalink( $pid );

  • 1
    Is anything being output to the screen prior to the wp_redirect() call? Anything echoed will cause you problems, as will any PHP files with any content -- including whitespace -- after the closing ?> tag.
    – Pat J
    Jun 16, 2013 at 21:01
  • after submit, sometime redirect to the permalink, sometime nothing comes but added contents...
    – Jin
    Jun 16, 2013 at 21:28
  • even I removed "$url = get_permalink( $pid ); wp_redirect($url); exit();" it's not working as well....
    – Jin
    Jun 16, 2013 at 21:31

1 Answer 1


Lines like this one can cause trouble: if ($_FILES) {. If $_FILES is not set and you try to use it in a conditional like that, you will get a Notice and if debugging is on that notice will print to the screen. I am guessing that is what is happening.

You should check variables with isset or empty, the way you do in a number of other places, and never use a bare variable as if it were a boolean.

Also, you are also returning from what appears to be global scope. When I try that, I get bool(false) printed to the screen. That could cause this issue as well.

  • I don't understand php at all... please let me know the correct code.. many thanks...
    – Jin
    Jun 16, 2013 at 21:57
  • Sorry, but I can't let you "know the correct code" without duplicating your setup and you haven't posted enough code for me to do that even if I had the time to do it.
    – s_ha_dum
    Jun 17, 2013 at 4:08

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