Multi-file WordPress uploads from the front-end

file-upload-handler.php

<?php /* This function attaches the image to the post in the database, add it to functions.php */

function insert_attachment($file_handler,$post_id,$setthumb='false') {

  // check to make sure its a successful upload
  if ($_FILES[$file_handler]['error'] !== UPLOAD_ERR_OK) __return_false();

  require_once(ABSPATH . "wp-admin" . '/includes/image.php');
  require_once(ABSPATH . "wp-admin" . '/includes/file.php');
  require_once(ABSPATH . "wp-admin" . '/includes/media.php');

  $attach_id = media_handle_upload( $file_handler, $post_id );

  if ($setthumb) update_post_meta($post_id,'_thumbnail_id',$attach_id);
  return $attach_id;
} ?>

process-post.php

<?php /* Also in the template file, this script processes any $_POST data and hands off the images to the insert_attachment() function. Again you may want to wrap this in a current_user_can conditional, and probably do some sanity checks on incoming $_POST data. */

global $post;

if ( $_FILES ) {
	$files = $_FILES['upload_attachment'];
	foreach ($files['name'] as $key => $value) {
		if ($files['name'][$key]) {
			$file = array(
				'name'     => $files['name'][$key],
				'type'     => $files['type'][$key],
				'tmp_name' => $files['tmp_name'][$key],
				'error'    => $files['error'][$key],
				'size'     => $files['size'][$key]
			);

			$_FILES = array("upload_attachment" => $file);

			foreach ($_FILES as $file => $array) {
				$newupload = insert_attachment($file,$post->ID);
			}
		}
	}
} ?>

upload-form.html

<!-- This is the form that you add to the template file. You probably want to wrap this in a current_user_can conditional. -->

<form action="#" method="post" enctype="multipart/form-data"><input type="file" name="upload_attachment[]" /> <input type="submit" value="Upload" /></form>

Dude you have really helped me out here, i've been scratching my head for an hour. Also i added this to check whether it's an image or not

foreach ($_FILES as $file => $array) {
    if(getimagesize($array['tmp_name'])){
        $newupload = insert_attachment($file,$pid);
    }else{
        // Wrong file type
    }
}

it's not working for me.

help to use it for my project

Thanks!!!

For show:

'attachment', 'numberposts' => -1, 'post_status' => null, 'post_parent' => $current_post, // check you print ID post )); if ( !$attachments ) echo "No images"; else { foreach ( $attachments as $attachment ) { the_attachment_link( $attachment->ID , false ); apply_filters( 'the_title' , $attachment->post_title ); } } ?>

Thanks a lot!!

Thank you for your sharing, it works!

Hi,i want to use this as attach images in comment.

I put this in comments-review.php

---

And this into functions.php

---

And this into comments-listing.php

$value) { if ($files['name'][$key]) { $file = array( 'name' => $files['name'][$key], 'type' => $files['type'][$key], 'tmp_name' => $files['tmp_name'][$key], 'error' => $files['error'][$key], 'size' => $files['size'][$key] ); ``` $_FILES = array("upload_attachment" => $file); foreach ($_FILES as $file => $array) { $newupload = insert_attachment($file,$post->ID); } } } ``` } ?>

---

But how to show the images ???

Great and thank's for sharing.

A question still in my mind.
Why do you use :

        ...
        $_FILES = array("upload_attachment" => $file);

        foreach ($_FILES as $file => $array) {
           $newupload = insert_attachment($file,$post->ID);
        }
        ...

And why (I've tested) just the code below is not enougth ?

        ...
        //$_FILES = array("upload_attachment" => $file);

        //foreach ($_FILES as $file => $array) {
           $newupload = insert_attachment($file,$post->ID);
        //}
        ...

To explain deeper, why do you override $_FILES variable. And why the insert_attachment($file,$post->ID); is inside a foreach ?

Is the first foreach too fast for the insert_attachment ?

Greatly appreciate this!

hi, would you kindly share how to Multi-file uploads with comments ? much thx