Recently, I became curious about wp_generate_attachment_metadata() & wp_update_attachment_metadata() which should be used in conjunction with wp_insert_attachment().

wp_generate_attachment_metadata() generates the following array:

The most curious about this was image_meta which is generated by wp_read_image_metadata().

So I then wondered if one could query the posts and pull all posts that have a specific camera or specific shutter speed. The answer is YES!

Currently, WordPress does a great job displaying pages on the Edit Pages admin area for users with the capability edit_others_pages. However, if a user has edit_others_pages and has not yet authored any pages, WordPress defaults to listing all the pages removing edit actions, etc. Recently I had the need to list NO PAGES/POSTS except what the person has authored.

[php]<?php
add_action( 'pre_get_posts', 'wps_admin_exclude_pages' );
/*
* Modifies the admin query for a specific author for the Edit Posts
* and Pages admin pages checking capability.
*
* @param WP_Query Object $query Original Query Object
* @return WP_Query Object $query Original/Modified Query Object
*/
function wps_admin_exclude_pages( $query ) {
if( ! is_admin() )
return $query;

global $pagenow, $user_ID;
if( 'edit.php' == $pagenow && 'page' == get_query_var( 'post_type' ) && ! current_user_can( 'edit_others_pages' ) )
$query->set( 'author', $user_ID );

if( 'edit.php' == $pagenow && 'post' == get_query_var( 'post_type' ) && ! current_user_can( 'edit_others_posts' ) )
$query->set( 'author', $user_ID );

return $query;
}
[/php]