bogutski

<div style="text-align: center">
<?php

// 45934290 - ID группы
$d = file_get_contents("https://api.vk.com/method/groups.getMembers?group_id=45934290&v=5.16&offset=0&count=1000&fields=photo_50");
$us= json_decode($d,true);

foreach($us['response']['items'] as $u){
    echo sprintf('<img src="%s"/>',$u['photo_50']);