PHP跨域设置

允许单个域名访问

指定某域名（http://client.xxx.com）跨域访问

在php文件头部添加如下代码

header('Access-Control-Allow-Origin:http://client.xxx.com');

// 指定允许其他域名访问  
//header('Access-Control-Allow-Origin:*');  
// 响应类型  
//header('Access-Control-Allow-Methods:POST,OPTIONS');  
// 响应头设置  
//header('Access-Control-Allow-Headers:X-Request-With,Content-Type');
//header('Access-Control-Allow-Credentials:true');

允许多个域名访问

指定多个域名（http://client1.xxx.com、http://client2.xxx.com等）跨域访问

$origin = isset($_SERVER['HTTP_ORIGIN']) ? $_SERVER['HTTP_ORIGIN'] : '';
$allow_origin = array(
  'http://client1.xxx.com',
  'http://client2.xxx.com'
);
if (in_array($origin, $allow_origin)) {
  header('Access-Control-Allow-Origin:'.$origin); 
}

允许所有域名访问

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