<?php
header("Content-Type:application/json");
$hubs=glob("/var/www/html/*-hub.html");
$up=0;$r=[];
foreach($hubs as $h){
    $name=basename($h,'.html');
    $size=filesize($h);
    $ok=$size>100;
    if($ok)$up++;
    $r[]=["hub"=>$name,"size"=>$size,"ok"=>$ok];
}
echo json_encode(["up"=>$up,"total"=>count($hubs),"hubs"=>$r]);