65
votes
Accepted
How to get image title/alt attribute?
An attachment/image ID is all that's needed to retrieve its alt and title attributes.
$image_id = get_post_thumbnail_id();
$image_alt = get_post_meta($image_id, '_wp_attachment_image_alt', TRUE);
$...
- 3,221
39
votes
Accepted
Programmatically adding images to media library
$image_url = 'adress img';
$upload_dir = wp_upload_dir();
$image_data = file_get_contents( $image_url );
$filename = basename( $image_url );
if ( wp_mkdir_p( $upload_dir['path'] ) ) {
$file = $...
- 1,037
16
votes
Delete post with all files attached to it
I wrote the following function that uses the logic suggested by @rarst in his answer.
add_action( 'before_delete_post', function( $id ) {
$attachments = get_attached_media( '', $id );
foreach ($...
- 1,241
15
votes
Programmatically adding images to media library
If you use WordPress' sideload feature, you can do this more easily (and have WordPress handle all of the sanitization for you).
<?php
// example:
// $file = 'http://www.example.com/image.png';
//...
- 272
13
votes
How do I get the size of an attachment file?
I would do :
$attachment_filesize = filesize( get_attached_file( $attachment_id ) );
Or with readable size like 423.82 KB
$attachment_filesize = size_format( filesize( get_attached_file( $...
- 857
12
votes
Disable Attachment Pages Completely
You can filter default rewrite rules and remove those for attachments:
function cleanup_default_rewrite_rules( $rules ) {
foreach ( $rules as $regex => $query ) {
if ( strpos( $regex, '...
- 1,025
9
votes
How to get image title/alt attribute?
I use a quick function in all my themes to get image attachment data:
//get attachment meta
if ( !function_exists('wp_get_attachment') ) {
function wp_get_attachment( $attachment_id )
{
...
- 479
9
votes
Disable Attachment Pages Completely
If you want to disable media pages completely, you should use a 404 response code instead of redirection. This can be done with the following code:
function wpse237762_set_404() {
if (...
- 251
9
votes
Accepted
Regenerate missing _wp_attachment_metadata
Running the wp media regenerate command from WP-CLI with the --only-missing argument is quite fast (takes about 30 seconds for 4000 images) and rebuilds _wp_attachment_metadata correctly:
wp media ...
- 1,241
8
votes
Accepted
Count the number of images uploded on the website
There's a handy built-in function, namely wp_count_attachments().
We can filter out images with wp_count_attachments( $mime_type = 'image' ) that returns an object like:
stdClass Object
(
[image/...
- 67.8k
8
votes
Accepted
Can i hide the attachments from media which I uploaded from front end?
WordPress has two different ways of displaying media. There's the media overlay/modal view and also the list view, which is triggered by navigating to Admin > Media > Library then by clicking ...
- 17.9k
7
votes
Disable Attachment Pages Completely
For those who might not use plugins or prefer light-weighted method. This might be of help.
This method redirect attachment to the exact file instead of the attachment page and it is the method that ...
7
votes
How do you get the full size url of an attachment image
I solved this using wp_get_attachment_url($imageID);
But, you can also use wp_get_attachment_image_url($imageID, 'full')
- 315
6
votes
How do I get the size of an attachment file?
There's an easier solution, to get human readable file sizes.
$attachment_id = $attachment->ID;
$attachment_meta = wp_prepare_attachment_for_js($attachment_id);
echo $attachment_meta['...
6
votes
Accepted
How to save custom fields for attachments
Here is an example that adds a custom media field named Buy Now. This example saves the value of the custom field on the media overlay screen via ajax, as well as the media edit screen (non ajax).
...
- 17.9k
6
votes
Programmatically adding images to media library
I had issues with @TrubinE's solution where image files were not getting loaded.
Here is a complete example that worked for me: https://gist.github.com/m1r0/f22d5237ee93bcccb0d9
This is a similar idea ...
- 415
5
votes
Call to undefined function wp_generate_attachment_metadata()
Despite you already solved it (the "undefined" issue), it should be noted that wp_generate_attachment_metadata() is defined in wp-admin/includes/image.php, so you need to manually load that ...
- 39.9k
4
votes
Delete post with all files attached to it
Expanding on other answers here for use with only a specific post type.
add_action( 'before_delete_post', 'delete_all_attached_media' );
function delete_all_attached_media( $post_id ) {
if( ...
- 49
4
votes
How do I get attachment_id?
I am too late to answer this question but it will worked.
$attachment_id = get_post_thumbnail_id( $post->ID );
$url = wp_get_attachment_image_src($attachment_id, 'desired-size');
- 41
4
votes
How to get image title/alt attribute?
$image = get_post_meta(get_the_ID(), WPGRADE_PREFIX . 'homepage_slide_image', true);
if (!empty($image)) {
$image = json_decode($image);
$image_id = $image->id;
$img_meta ...
- 1,043
4
votes
How can i change an image's author?
In the screenshot you provided, click on the Edit more detail. this will redirect you to attachment's page.
Then, click on the Screen's options on the top of screen, and check the Author box. A new ...
- 15.4k
4
votes
Accepted
media_handle_upload for local files?
You want media_handle_sideload()
Handles a side-loaded file in the same way as an uploaded file is handled by media_handle_upload().
// Array similar to a $_FILES upload array.
$file_array = array(...
- 43.9k
4
votes
Using delete_attachment to prevent an attachment not working
Updated answer for WordPress 5.5.0+
As of 5.5.0, a new filter has been added to wp_delete_attachment:
/**
* Filters whether an attachment deletion should take place.
*
* @since 5.5.0
*
* @param ...
- 3,174
4
votes
Need clear explanation about medias/files/attchments
Attachments in WP are stored as posts of type attachment which reference files physically stored in the uploads folder. This is why if you FTP a file into the uploads folder it doesn't appear in the ...
- 60.6k
3
votes
Associate an existing image with a post
I have decided to post it as a separate post and not a comment because it will be lost.
I've tried Ben's solution but it modifies the attachment's other data fields.
I ended up using this.
...
3
votes
How to find attachment by it's name?
get_page_by_title() will do the trick.
With a full URL as title:
get_page_by_title( pathinfo( 'https://www.example.com/file.jpg' )['filename'], "OBJECT", 'attachment' );
Returns WP_Post Object or ...
- 31
3
votes
copy attachment title to description and alt text
Well, I was using lightbox gallery, and I needed to have the post title for my images as the alt text.
What I did was create a query on the database to update the post_excerpt to match the post title....
3
votes
Get wp_get_attachment_url outside of loop
Little late here, but I created a solution that is a bit cleaner and reusable with some of the suggestions in this thread. Add this anywhere in your functions.php file, then simply call this function ...
- 43
3
votes
Turn a URL into an Attachment / Post ID
Ok I found the answer that no one has on the net I been looking for days now. Keep in mine this only works if your theme or plugin is using the WP_Customize_Image_Control() if you are using ...
- 211
3
votes
how to get original image using wp_get_attachment_image_src
There's wp_get_attachment_image_url introduced in WordPress 4.4.0.
It takes these arguments:
int $attachment_id - Image attachment ID.
string|array $size - Optional. Image size to retrieve. Accepts ...
- 196
Only top scored, non community-wiki answers of a minimum length are eligible