WordPress REST API examples

wordpress-rest-api-simple-endpoint.php

<?php

add_action( 'rest_api_init', function () {
	
	register_rest_route( 'my-namespace/v1', 'some/route', [
			'methods' => [ 'GET' ],
			'permission_callback' => '__return_true',
			'callback' => function () {
				// You can return arrays or objects here — WordPress will
				// format them for output as JSON.
				return [
					'some' => 'custom',
					'data' => 'can',
					'go' => 'here',
				];
			},
		]
	);
	
} );