在客户端请求的时候增加了自定义的http头,请求如下所示:
自定义http请求头
var_dump(getallheaders);
一开始通过getallheaders参数获取,但是发现在nginx部署的服务器上获取不到,非常奇怪,查看php手册发现getallheaders这个函数只支持apache服务器。于是找到兼容的方法:
if (!function_exists('getallheaders')) { function getallheaders() { $headers = array(); foreach ($_SERVER as $name => $value) { if (substr($name, 0, 5) == 'HTTP_') { $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value; } } return $headers; } } var_dump(getallheaders());
实际上这个方法就是找到$_SERVER变量中以HTTP_开头的属性,对属性做一个字符串替换这样。$_SERVER变量中的HTTP_USER_ID实际就是上面自定义的User-Id:
php中$_SERVER变量
另外关于自定义Http头, 需要注意头的命名规范,不能用下划线命名 ,否则在nginx服务器下读取不到,在查找命名规范的时候,有提到自定义属性用X-开头这个问题。后来查阅了一些资料,发现后来的http协议不建议这样去做。
以上内容是针对PHP getallheaders无法获取自定义头(headers)的问题的相关叙述,希望对大家有所帮助!

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