php支持多个地址跨域访问

1. [代码]php 多个地址跨域配置    

//跨域访问的时候才会存在此字段
$origin = isset($_SERVER['HTTP_ORIGIN'])? $_SERVER['HTTP_ORIGIN'] : '';  
  
$allow_origin = array(  
    'http://www.a.com',  
    'http://www.b.com'  
);  
  
if(in_array($origin, $allow_origin)){  
    header('Access-Control-Allow-Origin:'.$origin);  
    header('Access-Control-Allow-Methods:POST');  
    header('Access-Control-Allow-Headers:x-requested-with,content-type');  
}