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1、英文原文PHPOverviewPHPisascriptinglanguageoriginallydesignedforproducingdynamicwebpages.Ithasevolvedtoincludeacommandlineinterfacecapabilityandcanbeusedinstandalonegraphicalapplications.WhilePHPwasoriginallycreatedbyRasmusLerdorfin1995,themainimplementationofPHPisnowproducedbyTheP
2、HPGroupandservesasthedefactostandardforPHPasthereisnoformalspecification.PHPisfreesoftwarereleasedunderthePHPLicense,howeveritisincompatiblewiththeGNUGeneralPublicLicense(GPL),duetorestrictionsontheusageofthetermPHP.PHPisawidely-usedgeneral-purposescriptinglanguagethatisespeci
3、allysuitedforwebdevelopmentandcanbeembeddedintoHTML.Itgenerallyrunsonawebserver,takingPHPcodeasitsinputandcreatingwebpagesasoutput.Itcanbemillionwebsitesand1millionwebservers.PHPoriginallystoodforPersonalHomePage.Itbeganin1994asasetofCommonGatewayInterfacebinarieswrittenintheC
4、programminglanguagebytheDanish/GreenlandicprogrammerRasmusLerdorf.LerdorfinitiallycreatedthesePersonalHomePageToolstoreplaceasmallsetofPerlscriptshehadbeenusingtomaintainhispersonalhomepage.Thetoolswereusedtoperformtaskssuchasdisplayinghisrésuméandrecordinghowmuchtraffichispag
5、ewasreceiving.HecombinedthesebinarieswithhisFormInterpretertocreatePHP/FI,whichhadmorefunctionality.PHP/FIincludedalargerimplementationfortheCprogramminglanguageandcouldcommunicatewithdatabases,enablingthebuildingofsimple,dynamicwebapplications.LerdorfreleasedPHPpubliclyonJune
6、8,1995toacceleratebuglocationandimprovethecode.ThisreleasewasnamedPHPversion2andalreadyhadthebasicfunctionalitythatPHPhastoday.ThisincludedPerl-likevariables,formhandling,andtheabilitytoembedHTML.ThesyntaxwassimilartoPerlbutwasmorelimited,simpler,andlessconsistent.ZeevSuraskia
7、ndAndiGutmans,twoIsraelidevelopersattheTechnionIIT,rewrotetheparserin1997andformedthebaseofPHP3,changingthelanguage'snametotherecursiveinitialismPHP:HypertextPreprocessor.ThedevelopmentteamofficiallyreleasedPHP/FI2inNovember1997aftermonthsofbetatesting.Afterwards,publictesting
8、ofPHP3began,andtheofficiallaunchcameinJune1998.SuraskiandGutm
