My problem is that I cannot upload post attachments from a frontend form. I send data through AJAX to my php files containing functions. Let me be clear: everything is working great, the post is created with all informations. The only missing thing is that the images I sent are not attached to the post.

My problem should be in my php function to attach images.

My html

<input id="moreimages" type="file" name="moreimages[]" multiple >

My php function

$pid = // project id
$uid = // current user

if ( $_FILES ) { 
$files = $_FILES["moreimages"];  
foreach ($files['name'] as $key => $value) {            
            if ($files['name'][$key]) {
                $upload_overrides             = array('test_form' => false);
                $uploaded_file                = wp_handle_upload($_FILES['file'], $upload_overrides);
                $file_name_and_location       = $uploaded_file['file'];
                $file_title_for_media_library = $_FILES['file']['name'];
                $arr_file_type      = wp_check_filetype(basename($_FILES['file']['name']));
                $uploaded_file_type = $arr_file_type['type'];
                $image = array( 
                    'post_mime_type' => $uploaded_file_type,
                    'post_title' => addslashes($file_title_for_media_library),
                    'post_content' => '',
                    'post_status' => 'inherit',
                    'post_parent' => $pid,
                    'post_author' => $uid
                $_FILES = array ("moreimages" => $image); 
                foreach ($_FILES as $images => $array) {              
                    $image_id = wp_insert_attachment($image, $file_name_and_location, $pid);
                    $attach_data = wp_generate_attachment_metadata($image_id, $file_name_and_location);
                    wp_update_attachment_metadata($image_id, $attach_data); 

I repeat I see in my console.log that images are correctly sent by AJAX into FormData object. I see this when I upload FIRST.jpg.

Content-Disposition: form-data; name="moreimages[]"; filename="FIRST.jpg"
Content-Type: image/jpeg

So the problem should be in the php loop for attaching images. Could you help me please? Thanks in advance!

  • please do the minimum of debugging before to ask a question. that means looking at every variable to see if the contains the expected values and writing these values in the question. look also this page : stackoverflow.com/questions/12769982/…
    – mmm
    Apr 29, 2016 at 11:32
  • Use media_handle_upload() instead in foreach loop.
    – N00b
    Apr 29, 2016 at 12:09
  • thanks @TwerkingN00b for your suggestion I've solved as answered. Thanks again.
    – Kleeia
    Apr 29, 2016 at 13:51
  • @mmm Sorry, I won't open a discussion, I very appreciate your suggestion, I'm open to learn, but I think that my question was quite clear besides my wrong approach which I've discovered next. What I'm saying is that maybe just driving to something more practice, related to the question, could help better users who are learning like me. I'm not asking to write my code from scratch but something like "hey dude here is a similar question" or "you're missing a function"... Thanks anyway. Cheers.
    – Kleeia
    Apr 29, 2016 at 14:01

1 Answer 1


I've actually forgotten to create the function for uploading and attaching images. I've found the correct method into another question here Uploading Multiple Attachments From Front-End With A Description.

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