WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
2239 | * @return int {@internal Missing Description}} |
2240 | */ |
2241 | function wp_update_attachment_metadata( $post_id, $data ) { |
2242 | $post_id = (int) $post_id; |
2243 | if ( !$post =& get_post( $post_id ) ) |
2244 | return false; |
2245 |
|
2246 | $old_data = wp_get_attachment_metadata( $post->ID, true ); |
2247 |
|
2248 | $data = apply_filters( 'wp_update_attachment_metadata', $data, $post->ID ); |
2249 |
|
2250 | if ( $old_data ) |
2251 | return update_post_meta( $post->ID, '_wp_attachment_metadata', $data, $old_data ); |
2252 | else |
2253 | return add_post_meta( $post->ID, '_wp_attachment_metadata', $data ); |
2254 | } |
2255 |
|
2256 | /** |
2257 | * wp_get_attachment_url() - Retrieve the URL for an attachment |