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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 |
---|---|
6326 | /** |
6327 | * Filters whether an attachment deletion should take place. |
6328 | * |
6329 | * @since 5.5.0 |
6330 | * |
6331 | * @param WP_Post|false|null $delete Whether to go forward with deletion. |
6332 | * @param WP_Post $post Post object. |
6333 | * @param bool $force_delete Whether to bypass the Trash. |
6334 | */ |
6335 | $check = apply_filters( 'pre_delete_attachment', null, $post, $force_delete ); |
6336 | if ( null !== $check ) { |
6337 | return $check; |
6338 | } |
6339 |
|
6340 | delete_post_meta( $post_id, '_wp_trash_meta_status' ); |
6341 | delete_post_meta( $post_id, '_wp_trash_meta_time' ); |
6342 |
|
6343 | $meta = wp_get_attachment_metadata( $post_id ); |
6344 | $backup_sizes = get_post_meta( $post->ID, '_wp_attachment_backup_sizes', true ); |