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I have a form where user can upload a file, which creates a post with an attachment. I would like to get this attachment with post id, because this is the only thing I have in my case. Is it possible ?

Thank you,

ArbreMojo.

  • You can try this: wp_get_attachment_url( get_post_thumbnail_id( 'your-post-id' ) ); to get attachment by post id. – Bhupen Jul 4 '19 at 8:25
  • get_post_thumbnail_id() returns nothing, although post id is fine... – ArbreMojo Jul 4 '19 at 8:34
  • Can you check the same image in your WordPress media? – Bhupen Jul 4 '19 at 8:47
  • Well it's not necessarily an image, it's a file, whatever the type is, it could be a .txt . That's why I'm not sure we could get it with get_post_thumbnail_id()... – ArbreMojo Jul 4 '19 at 9:05
  • If it is there in your media section in WordPress admin then only you will be able to get that attachment. – Bhupen Jul 4 '19 at 9:08
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yes use this code here you can get attachment id

if(isset($_FILES['myimage']) && ($_FILES['myimage']['size'] > 0)) {
// Get the type of the uploaded file. This is returned as "type/extension"
$arr_file_type = wp_check_filetype(basename($_FILES['myimage']['name']));
$uploaded_file_type = $arr_file_type['type'];
// Set an array containing a list of acceptable formats
$allowed_file_types = array('image/jpg', 'image/jpeg', 'image/gif', 'image/png');
if (in_array($uploaded_file_type, $allowed_file_types)) {
    $upload_overrides = array('test_form' => false);
     $uploaded_file = wp_handle_upload($_FILES['myimage'], $upload_overrides);
    if (isset($uploaded_file['file'])) {
        $file_name_and_location = $uploaded_file['file'];
        $file_title_for_media_library = $imagetitle;
        $attachment = array(
            'post_mime_type' => $uploaded_file_type,
            'post_title' => 'Uploaded image ' . addslashes($file_title_for_media_library),
            'post_content' => '',
            'post_status' => 'inherit'
        );
        // Run the wp_insert_attachment function. This adds the file to the media library and generates the thumbnails. If you wanted to attch this image to a post, you could pass the post id as a third param
        $attach_id = wp_insert_attachment($attachment, $file_name_and_location);//here you get attachment id
        require_once(ABSPATH . "wp-admin" . '/includes/image.php');
        $attach_data = wp_generate_attachment_metadata($attach_id, $file_name_and_location);
        wp_update_attachment_metadata($attach_id, $attach_data);
        update_post_meta($post_id, 'pluginimage', $attach_id);//update post data by attachment id
        $upload_feedback = false;
    }
}}
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