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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 |
|---|---|
| 346 | function wp_delete_post_revision( $revision_id ) { |
| 347 | if ( !$revision = wp_get_post_revision( $revision_id ) ) |
| 348 | return $revision; |
| 349 | |
| 350 | $delete = wp_delete_post( $revision->ID ); |
| 351 | if ( is_wp_error( $delete ) ) |
| 352 | return $delete; |
| 353 | |
| 354 | if ( $delete ) |
| 355 | do_action( 'wp_delete_post_revision', $revision->ID, $revision ); |
| 356 | |
| 357 | return $delete; |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * Returns all revisions of specified post. |
| 362 | * |
| 363 | * @since 2.6.0 |
| 364 | * |