uploads - Read For Learn

Differentiate Featured Image from Post Images upon Upload

You could do this by filtering the meta value for _thumbnail_id. add_filter( ‘update_post_metadata’, ‘generate_featured_image_sizes’, 10, 5 ); add_filter( ‘add_post_metadata’, ‘generate_featured_image_sizes’, 10, 5 ); function generate_featured_image_sizes( $check, $object_id, $meta_key, $meta_value, $unique_or_prev ) { if ( $meta_key == ‘_thumbnail_id’ ) { // regenerate previous featured image thumbs if it exists if ( false !== ( $prev_thumb_id = … Read more

“Add Media” only shows “Full Size” under Attachment Display Settings

In order to show new image dimension options in the WordPress admin media library you would need to use the image_size_names_choose filter to assign them a name. So the code in your functions.php should look something like this: if ( function_exists( ‘add_image_size’ ) ) { add_image_size( ‘single-post-medium’, 515 ); add_image_size( ‘single-post-small’, 250 ); } add_filter( … Read more

PNG with transparent background turns black when uploaded and resized

I’d try saving it as a PNG 24 first. If that doesn’t work have a look at these: http://www.akemapa.com/2008/07/10/php-gd-resize-transparent-image-png-gif/ https://stackoverflow.com/questions/6382448/png-transparency-resize-with-simpleimage-php-class

Adding a custom image upload size and making it selected by default?

There are a few steps to this, as I found out today. First, you add a custom image size (you can put this somewhere the functions.php file in your theme): add_theme_support( ‘post-thumbnails’ ); add_image_size( ‘my-size’, 550, 550 ); // not sure what you want your height to // be, but this’ll shrink it to 550px … Read more

How to move wp-content (or uploads) outside of the WordPress directory

You have to define WP_CONTENT_DIR and WP_CONTENT_URL: const WP_CONTENT_DIR = ‘/path/to/new/directory’; const WP_CONTENT_URL = ‘http://content.wp’; The new path must be accessible for read and write operation from the WordPress core directory. You might need a helper function to add the new directory path to the open_basedir list: /** * Add a new directory to the … Read more

Could a large quantity of files in the uploads folder affect performance?

Short Answer: No A different question is: Will uploading a large number of files in WordPress affect performance? The answer to this: Most likely not. Reason: WordPress uses the DB to get a list of uploaded files (almost no difference for many files) FTP uses the filesystem (slower for many files) Details: WordPress does not … Read more

How to get the image EXIF date/time and use it for the WP post date/time

PHP has a function for this purpose: exif_read_data I used this image for testing. Try this code for your purpose: add_action( ‘add_attachment’, ‘create_post_from_image’ ); function create_post_from_image( $id ) { if ( wp_attachment_is_image( $id ) ) { $image = get_post( $id ); // Get image height/width for auto inserting the image later @list( $width, $height ) … Read more

Change WordPress upload path and URL

I went to the wp-admin/options.php page and set … But is that how it’s supposed to be done? Nope. You should never change anything in the WordPress core files because all your changes will be lost during the next update. You should use actions and filters instead: add_filter( ‘pre_option_upload_path’, function( $upload_path ) { return ‘/path/to/static’; … Read more

How to add more upload directories?

The following code will change the upload directory for a specific post-type! Just be sure to swap out both instances of “post-type” (line 14) with the name of your custom post-type. /** * Change Upload Directory for Custom Post-Type * * This will change the upload directory for a custom post-type. Attachments will * now … Read more

Get an uploaded attachments local server path?

get_attached_file returns the server path of an attachment.

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