30 lines
538 B
PHP
30 lines
538 B
PHP
<?php
|
|
/**
|
|
* WPSEO plugin file.
|
|
*
|
|
* @package WPSEO\Frontend\Schema
|
|
*/
|
|
|
|
if ( ! interface_exists( 'WPSEO_Graph_Piece' ) ) {
|
|
/**
|
|
* An interface for registering Schema Graph Pieces.
|
|
*
|
|
* @since 10.2
|
|
*/
|
|
interface WPSEO_Graph_Piece {
|
|
|
|
/**
|
|
* Add your piece of the graph.
|
|
*
|
|
* @return array|bool $graph A graph piece on success, false on failure.
|
|
*/
|
|
public function generate();
|
|
|
|
/**
|
|
* Determines whether or not a piece should be added to the graph.
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function is_needed();
|
|
}
|
|
}
|