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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 |
|---|---|
| 3447 | return new WP_Error( 'post_type', __( 'Cannot create a revision of a revision' ) ); |
| 3448 | |
| 3449 | $post = _wp_post_revision_fields( $post, $autosave ); |
| 3450 | |
| 3451 | $revision_id = wp_insert_post( $post ); |
| 3452 | if ( is_wp_error($revision_id) ) |
| 3453 | return $revision_id; |
| 3454 | |
| 3455 | if ( $revision_id ) |
| 3456 | do_action( '_wp_put_post_revision', $revision_id ); |
| 3457 | return $revision_id; |
| 3458 | } |
| 3459 | |
| 3460 | /** |
| 3461 | * Gets a post revision. |
| 3462 | * |
| 3463 | * @package WordPress |
| 3464 | * @subpackage Post_Revisions |
| 3465 | * @since 2.6.0 |