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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 |
---|---|
6351 | /** |
6352 | * Fires before an attachment is deleted, at the start of wp_delete_attachment(). |
6353 | * |
6354 | * @since 2.0.0 |
6355 | * @since 5.5.0 Added the `$post` parameter. |
6356 | * |
6357 | * @param int $post_id Attachment ID. |
6358 | * @param WP_Post $post Post object. |
6359 | */ |
6360 | do_action( 'delete_attachment', $post_id, $post ); |
6361 |
|
6362 | wp_delete_object_term_relationships( $post_id, array( 'category', 'post_tag' ) ); |
6363 | wp_delete_object_term_relationships( $post_id, get_object_taxonomies( $post->post_type ) ); |
6364 |
|
6365 | // Delete all for any posts. |
6366 | delete_metadata( 'post', null, '_thumbnail_id', $post_id, true ); |
6367 |
|
6368 | wp_defer_comment_counting( true ); |
6369 |
|