PHP中如何使用header发送头部信息

在照彭武兴先生的《PHP BIBLE》中所述,header可以送出Status标头,如

header("Status: 404 Not Found");

?>

就可以让用户浏览器出现文件找不到的404错误,但是我试了这样是不行的。

后来我到w3.org上查了http的相关资料,终于试出来了如何Header出状态代码(Status),与大家分享。

其实应该是这样的:

Header("http/1.1 403 Forbidden");

?>

第一部分为HTTP协议的版本(HTTP-Version)

第二部分为状态代码(Status)

第三部分为原因短语(Reason-Phrase)

三部分中间用一个空格分开,且中间不能有回车,第一部分和第二部分是必需的,第三部分则是给人看的,可写可不写甚至乱写。

还有,这一句的输出必须在Html文件的第一行。

下面我给出各代码所代表的意思(是从w3.org上查到的,够权威了):

  * 1xx: Informational - Request received, continuing process

  * 2xx: Success - The action was successfully received, understood,

  and accepted

  * 3xx: Redirection - Further action must be taken in order to

  complete the request

  * 4xx: Client Error - The request contains bad syntax or cannot be

  fulfilled

  * 5xx: Server Error - The server failed to fulfill an apparently

  valid request


       | "100" ; Continue

       | "101" ; Switching Protocols

       | "200" ; OK

       | "201" ; Created

       | "202" ; Accepted

       | "203" ; Non-Authoritative Information

       | "204" ; No Content

       | "205" ; Reset Content

       | "206" ; Partial Content

       | "300" ; Multiple Choices

       | "301" ; Moved Permanently

       | "302" ; Moved Temporarily

       | "303" ; See Other

       | "304" ; Not Modified

       | "305" ; Use Proxy

       | "400" ; Bad Request

       | "401" ; Unauthorized

       | "402" ; Payment Required

       | "403" ; Forbidden

       | "404" ; Not Found

       | "405" ; Method Not Allowed

       | "406" ; Not Acceptable

       | "407" ; Proxy Authentication Required

       | "408" ; Request Time-out

       | "409" ; Conflict

       | "410" ; Gone

       | "411" ; Length Required

       | "412" ; Precondition Failed

       | "413" ; Request Entity Too Large

       | "414" ; Request-URI Too Large

       | "415" ; Unsupported Media Type

       | "500" ; Internal Server Error

       | "501" ; Not Implemented

       | "502" ; Bad Gateway

       | "503" ; Service Unavailable

       | "504" ; Gateway Time-out

       | "505" ; HTTP Version not supported


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