How to solve cross-domain problems in php

header('Access-Control-Allow-Origin: *');

header('Access-Control-Allow-Origin: https://test.com');

// 设置能访问的域名
static public $originarr = [
   'https://test1.com',
   'https://test2.com',
];
 
/**
 *  公共方法调用
 */
static public function setheader()
{
   // 获取当前跨域域名
   $origin = isset($_SERVER['HTTP_ORIGIN']) ? $_SERVER['HTTP_ORIGIN'] : '';
   if (in_array($origin, self::$originarr)) {
      // 允许 $originarr 数组内的 域名跨域访问
      header('Access-Control-Allow-Origin:' . $origin);
      // 响应类型
      header('Access-Control-Allow-Methods:POST,GET');
      // 带 cookie 的跨域访问
      header('Access-Control-Allow-Credentials: true');
      // 响应头设置
      header('Access-Control-Allow-Headers:x-requested-with,Content-Type,X-CSRF-Token');
   }
}