unifi-php-api/examples/ap_scanning_state.php

<?php
/**
 * PHP API usage example
 *
 * contributed by: Art of WiFi
 * description:    example basic PHP script to fetch an Access Point's scanning state/results
 */

/**
 * using the composer autoloader
 */
require_once 'vendor/autoload.php';

/**
 * include the config file (place your credentials etc. there if not already present)
 * see the config.template.php file for an example
 */
require_once 'config.php';

/**
 * site id and MAC address of AP to query
 * https://github.com/Art-of-WiFi/UniFi-API-client#important-notes
 */
$site_id = '<enter your site id here>';
$ap_mac  = '<enter MAC address of Access Point to check>';

/**
 * initialize the UniFi API connection class and log in to the controller and do our thing
 * spectrum_scan_state()
 */
$unifi_connection = new UniFi_API\Client(
    $controlleruser,
    $controllerpassword,
    $controllerurl,
    $site_id,
    $controllerversion
);

$set_debug_mode   = $unifi_connection->set_debug($debug);
$loginresults     = $unifi_connection->login();
$data             = $unifi_connection->spectrum_scan_state($ap_mac);

/**
 * provide feedback in json format
 */
echo json_encode($data, JSON_PRETTY_PRINT);