transitentcaching

test.php

function me2_nav_get_cities() {

	$cache_key = 'me2_navigation_cities';

	/* Cache length in hours */
	$cache_time = 1;

	// For Debug
	//delete_transient( $cache_key );

	$output = get_transient( $cache_key );

	if ( false === ( $output ) ) {

		$city_args = array(
			'numberposts'     => -1,
			'orderby'         => 'date',
			'order'           => 'ASC',
			'post_type'       => 'city',
			);

		$cities = get_posts( $city_args );

		$output = array();

		foreach ( $cities as $city ) {

			$status = get_field( 'status', $city->ID );

			// Skip 2012 cities
			if ( 0 == $status ) {
				continue;
			};

			$object = new StdClass();

			$args = array(
				'ID' => $city->ID,
				'status' => $status,
				'permalink' => get_permalink($city),
				'artist_name' => get_field( 'artist', $city->ID ),
				'show_date' => get_field( 'date', $city->ID ),
				'location' => get_field( 'location', $city->ID )
			);

					// Loop through parameters adding them to the object
			foreach( $args as $k => $v ){
				$object->$k = $v;
			}

			// Add each object to output array
			$output[] = $object;

		}

		// Set transient for X hour
		set_transient( $cache_key, $output, $cache_time * HOUR_IN_SECONDS );

	}

	if( isset($output) ) return $output;

}