PHP获取全年工作日

<?php

/**
 * @description=> 工作日
 */
class WorkingDay
{
   
    /**
     * @description=> 特殊日期,节假日，调休日
     * @var array
     */
    private $_specialDay = [];
	
	/**
	 * https://timor.tech/api/holiday/year/2020/ 指定年份
	 * @var string
	 */
    public $yearAPI = 'http://timor.tech/api/holiday/year';
    
    public function __construct()
    {
   
        // 获取假期及调休
        $yearJson = file_get_contents($this->yearAPI);
        $yearJson = json_decode($yearJson, 1);
        $year     = date('Y');
        foreach ($yearJson['holiday'] as $v) {
   
            $this->_specialDay[$year][$v['date']] = (int) !$v['holiday'