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1、php进阶实现无限分类（PHPadvancedimplementationunlimitedclassification）PHPadvanced:implementingunlimitedclassification(1)1.analysisWhenwemakeawebsiteusingPHP,classificationisveryimportant.Inthefollowingclassification,thesecondcategoriesarecalledsubclassification,andnowmostwebsitesareclassifiedintothird
2、categories:Thefirstclassification(theparentclassification)-->second(subcategoryclassification)-->third(Sunclassification)classificationThegeneticclassificationofmorecontrolprogramanddatabaseiscomplexanddifficultmore.Inthesamelevelofclassificationandcontrolisverysimple,becauseonlyonedatabasene
3、edtorecordthisclassificationlevelontheline,suchas:system,newsclassification,intheleveloftreatmentisverysimple,butonawebsiteforaclassisnotenough,alsoneedtoreclassification,suchas:System-->linux,windowsNews-->linuxnews,windowsnewsThismakestheclassificationclear,atleasttomakesense,thesysteminclu
4、desLinuxandwindows,andnewsincludesLinuxnewsandwindowsnews,inordertomaketheinformationmoreclear,andthencontinuetoclassify:Linux-->systemtools,kernel,programminglanguage,developmenttools...Thethirdlevelclassification,informationismoreclear,thatistosayclearlytoprocessinginformation,themoredetail
5、edclassificationismoreconvenient,itisconvenientandeasytohandleinformationusersclearlyfindtheinformationneeded,butwiththecontinuousrefinementofclassification,therewillbemoreandmoredifficulttocontrolandprogramthedatabase.Difficulty1:howdoyoudealwiththesemutuallyrelatedphylogeneticrelationshipsi
6、nthedatabase?Twodifficult:howtousePHPtocompletethisclearrelationship?Theclassificationandfineclassificationiseveryphpprogrammermustsolvetheproblem,becauseoftheproductionofagoodandexcellentwebsiteclassificationproblemisinevitable,andtosolvethisproblemisquitecomplex,thebiggestproblemistheclassi
7、ficationofthedatabase,becausethedatabaseifimproperhandlingwillbringhugeworkloadevenreplandatabase...Thisisnotanexaggeration,becausealotofpeopleinthedatabasewilluseaclassificationtoestablishadatabaseofpractice,Iwasalsotakenthisapproachforclass
