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 |
---|---|
172 | * By default a revision is saved only if one of the revisioned fields has changed. |
173 | * This filter allows for additional checks to determine if there were changes. |
174 | * |
175 | * @since 4.1.0 |
176 | * |
177 | * @param bool $post_has_changed Whether the post has changed. |
178 | * @param WP_Post $last_revision The last revision post object. |
179 | * @param WP_Post $post The post object. |
180 | */ |
181 | $post_has_changed = (bool) apply_filters( 'wp_save_post_revision_post_has_changed', $post_has_changed, $last_revision, $post ); |
182 |
|
183 | // Don't save revision if post unchanged. |
184 | if ( ! $post_has_changed ) { |
185 | return; |
186 | } |
187 | } |
188 | } |
189 |
|
190 | $return = _wp_put_post_revision( $post ); |