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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 |
|---|---|
| 118 | * |
| 119 | * @since 3.6.0 |
| 120 | * |
| 121 | * @param bool $check_for_changes Whether to check for changes before saving a new revision. |
| 122 | * Default true. |
| 123 | * @param int $last_revision ID of the last revision. |
| 124 | * @param int $post Post ID. |
| 125 | * |
| 126 | */ |
| 127 | if ( isset( $last_revision ) && apply_filters( 'wp_save_post_revision_check_for_changes', $check_for_changes = true, $last_revision, $post ) ) { |
| 128 | $post_has_changed = false; |
| 129 | |
| 130 | foreach ( array_keys( _wp_post_revision_fields() ) as $field ) { |
| 131 | if ( normalize_whitespace( $post->$field ) != normalize_whitespace( $last_revision->$field ) ) { |
| 132 | $post_has_changed = true; |
| 133 | break; |
| 134 | } |
| 135 | } |
| 136 | //don't save revision if post unchanged |