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<?php
class foo {
	
/**
 * Return sites of MU.
 * $sites object
 */
public function get_sites() {
	
	$sites = get_sites();
	return $sites;
}
	
/**
 * Parse posts.
 */
public function get_remote_posts() {

	$posts = get_transient( 'remote_posts' );

	if ( empty( $posts ) ) {
		$response = wp_remote_get( 'http://mysite.com/wp-json/wp/v2/posts/' );
		
	if ( is_wp_error( $response ) ) {
		return array();
	}

	$posts = json_decode( wp_remote_retrieve_body( $response ) );
	
		if ( empty( $posts ) ) {
			return array();
		}
	
		set_transient( 'remote_posts', $posts, HOUR_IN_SECONDS );
	}

	return $posts;
}
	
}