scrape_open_graph

/*
 * Function Description : Facebook Scrape
 * Author Name : Mouad Achemli
 * Source : https://www.mwordpress.net/force-facebook-to-update-post-thumbnail-automatically/
 * Inspered from : https://stackoverflow.com/a/32916433/2535061
 * @website : https://www.mwordpress.net/
 *
*/
function scrape_open_graph($post) {

	global $pagenow;
	global $post;

	// Flush W3 Total Cache
	if (function_exists('w3tc_pgcache_flush_post')) :
		w3tc_pgcache_flush_post($post->ID);
	endif;

	// Flush WP Super Cache
	if (function_exists('wp_cache_post_change')) :
		wp_cache_post_change($post->ID);
	endif;

	// get key
	$check_key = get_post_meta($post->ID, 'opengraph-is-update' , true);
	if (!empty($check_key)) {
			// Nothing to do
	} else {
			// add meta key value for next check
			add_post_meta($post->ID, 'opengraph-is-update', 'yes', true );
			// Facebook scrape
			$url = 'https://graph.facebook.com';
			$param = array(
				'id' => get_permalink( $post->ID ),
				'scrape' => 'true',
				'method' => 'post'
			);
			wp_remote_get(add_query_arg( $param, $url ));

	}

}
add_action('publish_post', 'scrape_open_graph');
add_action('save_post', 'scrape_open_graph');