php的header头

PHP:Header->
+---------------------------------------------------------------------------------------------------------------+
PHP header()
the function declaration:void header(string string [,bool replace [,int http_response_code]])
The optional replace parameter indicates whether the header should replace a previous similar header,or add a second header of the same type By default it will replace(true);

RFC2616有相关的所有的状态信息的说明,也就是状态码,大体总结如下:

*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 fullfilled

5xx:Server Error ----The server failed to fulfill an apperently valid request.

| "100";Continue

|"101";Switching Protocols

|"200";OK

|"201";Created

|"202";Accepted

|"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";User Proxy

400 ->Bad Request

402->Payment Required

403->Forbidden

404->Not fount

405->Method Not Allowed

406->Not Acceptable

407->Proxy Authentication Required

408->Request Time-out

409 ->Confilct

410 -> Gone

411->Length Required

412->Precondition Failed

413->Request Entity Too large

414->Request-URI Too Large

415->Unsupported Media Type

500->Not Implemented

501->Not Implemented

502->Bad Gateway

503->Service Unavailable

504->Gateway Time-out

505->HTTP Version not supported

header("HTTP/1.1 404 Not Found",true,404);
header("HTTP/1.0 401 Unauthorized");
header("Content-Type:text/html;charset=utf-8");
header("Location:http://www.xx.com");
RFC2616 http://www.faqs.org/rfsc/rfc2616