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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 |
|---|---|
| 221 | 'slug' => $image_size_slug, |
| 222 | 'name' => $image_size_name, |
| 223 | ); |
| 224 | } |
| 225 | |
| 226 | // Lock settings. |
| 227 | $user_id = wp_check_post_lock( $post->ID ); |
| 228 | if ( $user_id ) { |
| 229 | /** This filter is documented in wp-admin/includes/post.php */ |
| 230 | if ( apply_filters( 'show_post_locked_dialog', true, $post, $user_id ) ) { |
| 231 | $locked = true; |
| 232 | } |
| 233 | |
| 234 | $user_details = null; |
| 235 | if ( $locked ) { |
| 236 | $user = get_userdata( $user_id ); |
| 237 | $user_details = array( |
| 238 | 'name' => $user->display_name, |
| 239 | ); |