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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 |
|---|---|
| 150 | * This filter can override that so a revision is saved even if nothing has changed. |
| 151 | * |
| 152 | * @since 3.6.0 |
| 153 | * |
| 154 | * @param bool $check_for_changes Whether to check for changes before saving a new revision. |
| 155 | * Default true. |
| 156 | * @param WP_Post $last_revision The last revision post object. |
| 157 | * @param WP_Post $post The post object. |
| 158 | */ |
| 159 | if ( isset( $last_revision ) && apply_filters( 'wp_save_post_revision_check_for_changes', true, $last_revision, $post ) ) { |
| 160 | $post_has_changed = false; |
| 161 | |
| 162 | foreach ( array_keys( _wp_post_revision_fields( $post ) ) as $field ) { |
| 163 | if ( normalize_whitespace( $post->$field ) != normalize_whitespace( $last_revision->$field ) ) { |
| 164 | $post_has_changed = true; |
| 165 | break; |
| 166 | } |
| 167 | } |
| 168 | |