WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 168 | * This filter allows for additional checks to determine if there were changes. |
| 169 | * |
| 170 | * @since 4.1.0 |
| 171 | * |
| 172 | * @param bool $post_has_changed Whether the post has changed. |
| 173 | * @param WP_Post $last_revision The last revision post object. |
| 174 | * @param WP_Post $post The post object. |
| 175 | * |
| 176 | */ |
| 177 | $post_has_changed = (bool) apply_filters( 'wp_save_post_revision_post_has_changed', $post_has_changed, $last_revision, $post ); |
| 178 | |
| 179 | //don't save revision if post unchanged |
| 180 | if ( ! $post_has_changed ) { |
| 181 | return; |
| 182 | } |
| 183 | } |
| 184 | } |
| 185 | |
| 186 | $return = _wp_put_post_revision( $post ); |