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Project1MemberManagementSystemSchoolofSoftware,ChengduPolytechnicLecturer:MuQichunTask10Logout
DisplayLoginInformationonHomePageAfterloggingin,wewilldisplaytheinformationofthepersonloggedinonthehomepage,whichistheusername,aswellasa“logout”link.Clickingthe“logout”link,itgoestologout.phpanddestroysallsessionsandthengoingtothehomepage.Wehavefoundthatthenavigationbaronthetopofawebpagewillbedisplayedoneverypage,andallcodesarerepeatedineveryfile.Therefore,wecanusethesamemethodaswedowithconn.phpbyputtingthenavigationbarinaseparatefiletooptimizethecode.Rightclickthememberdirectory,andcreateanewfilenav.phpandinputthecode.Modifytheindex.php,singup.phpandlogin.phpfilesanduseinclude_onceatthepreviouslocationofthenavigationbartoincludethenav.phpfile.Pleasenotethatwehaveusedthesessioninnav.php,soweneedtostartasessionbeforecitingthisfileinotherfiles.
RelevantCode
CodeAnalysisItcanbeseenthatwehaveaddedtheusernameofthecurrentpersonloggedinandthelogoutlinkinthenavigationbar.Weusedafunctionisset,whichisusedtojudgeifavariableexists.TheIf(isset($_SESSION[loggedUsername])$_SESSION[loggedUsername])isusedtojudgetheexistenceof$_SESSION[loggedUsername].Ifno,itisfalse;ifyes,itwilljudgewhether$_SESSION[loggedUsername]isnull.Afterapersonlogsin,theusernamesavedin$_SESSION[loggedUsername]istheusernameofthepersonloggedin.Ifbothconditionsaretrue,theresultofifistrue,displayingtheusernameofthepersoncurrentlyloggedinandthelogoutlink.
CodeAnalysisTheproblemabouthighlightincurrentcolumnneedstobesolvedwhenanavigationbarisplacedinnav.php.OursolutionistoaddanIDparameterineachnavigationlinkinthenav.phpfile.Afterthenav.phpfileisincludedinotherpages,thisIDparameterwillbesynchronized
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