billy_herington

<?php

 define('TOKEN', '');
 
 $ch = curl_init('https://api.vk.com/method/messages.getConversationMembers');

 $data = [
 	'access_token'   => TOKEN,
 	'v'		         => '5.144',
 	'peer_id' 		 => '',
 	'count'  		 => 200
 ];

 curl_setopt_array($ch, [
 	CURLOPT_RETURNTRANSFER   => 1,
 	CURLOPT_HEADER                    => 0,
 	CURLOPT_POST                         => 1,
 	CURLOPT_POSTFIELDS              => $data
 ]);
 
 $result = curl_exec($ch);

 if ($result === false)
 	die();

 curl_close($ch);

 $result = json_decode($result, true);

 $adminList = [];

 foreach ($result['response']['items'] as $item)
 {
 	if (array_key_exists('is_admin', $item)  && $item['is_admin'] == true)
 	{
 		$adminList[] = $item['member_id'];
 	}
 }

 var_dump($adminList);