unifi-php-api/examples/reconnect_client.php

<?php
/**
 * PHP API usage example
 *
 * contributed by: Art of WiFi
 * description:    example basic PHP script to force a client device to reconnect
 */

/**
 * 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';

/**
 * the MAC address to reconnect
 */
$mac_to_reconnect = '<MAC address>';

/**
 * site where the above MAC address is connected
 */
$site_id = '<enter your site id here>';

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

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

/**
 * then we force the device to reconnect
 */
$reconnect_result = $unifi_connection->reconnect_sta($mac_to_reconnect);

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