apiOld/calendar/holiday/api.php

<?php 
header("Content-type:application/json;charset=utf-8");
$stream_opts = [
    "ssl" => [
        "verify_peer"=>false,
        "verify_peer_name"=>false,
    ]
]; 
if($_GET['date'] == null){
    header('HTTP/1.1 400 Bad Request'); 
    header('status: 400 Bad Request'); 
	echo '{"error":"400"}';
}else{
	echo @file_get_contents("http://tool.bitefu.net/jiari/?d=".$_GET['date'],false, stream_context_create($stream_opts));
}