祭日取得

example.php

<?php
use GuzzleHttp\Client;

function getHolidays($holidays_id, $start, $end, $api_key, $num = 50)
{
    $url = "https://www.googleapis.com/calendar/v3/calendars/{$holidays_id}/events";
    $query_string = "key={$api_key}&timeMin={$start}&timeMax={$end}&maxResults={$num}&orderBy=startTime&singleEvents=true";

    $client = new Client();
    $response = $client->request(
        'GET',
        "{$url}?{$query_string}",
        [
            'timeout' => 120,
            'connect_timeout' => 30,
            'http_errors' => false,
        ]
    );

    if (((int)$response->getStatusCode())/100 != 2) {
        return false;
    }

    $results = json_decode($response->getBody());
    $holidays = [];
    foreach($results->items as $item)
    {
        $date = strtotime((string) $item->start->date);
        $title = (string)$item->summary;
        $origin = null;

        if (strpos($title, ' ') !== false) {
            list($origin, $title) = explode(' ', $title);
        }
        $holidays[] = [
            'title' => $title,
            'origin' => $origin,
            'date' => date('Y-m-d', $date),
        ];
    }

    return $holidays;
}

$holidays_id =  "japanese__ja@holiday.calendar.google.com";
$google_api_key = env('GOOGLE_API_KEY');

$holydays = getHolidays($holidays_id, '2020-01-01\T00:00:00\Z', '2020-12-31\T00:00:00\Z', $google_api_key);