Header () page jump in phpci framework

When you use the header function to jump, you can find the specified url to find the page, but the page does not jump, the url remains unchanged. what is the problem: RequestURL: localhostloginRequestMethod: POSTStatusCode: 302 RequestHeadersviewsourceAccept: ** Accept-Encoding: gzip, deflate, sdchAccept-Language: zh-CN, zh; q0.8Connection: keep-... php

When you use the header function to jump, you can find the specified url and also find the page, but the page does not jump, the url remains unchanged. what is the problem?
Request URL: http: // localhost/login
Request Method: POST
Status Code: 302
Request Headersview source
Accept :*/*
Accept-Encoding: gzip, deflate, sdch
Accept-Language: zh-CN, zh; q = 0.8
Connection: keep-alive
Content-Length: 67
Content-Type: application/x-www-form-urlencoded
Cookie: PHPSESSID = 2k3ap23pdn68ecls5a1kgb8431
Host: localhost
Origin: http: // localhost
Referer: http: // localhost/
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36
X-Requested-With: XMLHttpRequest
Form Dataview sourceview URL encoded
Username: 123
Password: e10adc3949ba59abbe56e057f20f883e
Role: student
This is the initial page

Request URL: http: // localhost/student/index
Request Method: GET
Status Codes: 200 OK
Request Headersview source
Accept :*/*
Accept-Encoding: gzip, deflate, sdch
Accept-Language: zh-CN, zh; q = 0.8
Connection: keep-alive
Cookie: PHPSESSID = 2k3ap23pdn68ecls5a1kgb8431
Host: localhost
Referer: http: // localhost/
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36
X-Requested-With: XMLHttpRequest
Response Headersview source
Connection: Keep-Alive
Content-Length: 856
Content-Type: text/html
Date: Mon, 18 Nov 2013 14:22:30 GMT
Keep-Alive: timeout = 5, max = 99
Server: Apache/2.4.4 (Win32) PHP/5.4.16
X-Powered-By: PHP/5.4.16
This is the page to jump