php手册提供了现成的函数：
getallheaders
(php 4, php 5)
getallheaders—fetch all http request headers
说明
arraygetallheaders(void)
fetches all http headers from the current request.
this function is an alias forapache_request_headers(). please read theapache_request_headers()documentation for more information on how this function works.
返回值
an associative array of all the http headers in the current request, orfalseon failure.
example #1getallheaders()example
$value) {
echo $name: $value\n;
}
?>
不过这个函数只能在apache环境下使用，iis或者nginx并不支持，可以通过自定义函数实现
$value)
{
if (substr($name, 0, 5) == 'http_')
{
$headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
}
}
return $headers;
}
}
?>
好了，看看都打印出了啥吧
*/*
[accept-language] => zh-cn
[accept-encoding] => gzip, deflate
[user-agent] => mozilla/4.0 (compatible; msie 7.0; windows nt 5.1; trident/4.0; .net clr 2.0.50727)
[host] => localhost
[connection] => keep-alive
) 本文链接http://www.cxybl.com/html/wlbc/php/20130326/37406.html