Kuyini uhlelo lwe-PHP?

The PHP Programmiersprache has emerged as one of the most popular and widely used languages to build websites. Kuyinto esheshayo futhi kulula ukufunda Object-Orientierte Programmiersprache esetshenziswa ezihlukahlukene izicelo, kusukela ezinhlelweni zezitolo kanye nezinhlelo zokuphatha okuqukethwe ukuya ekusingatheni iwebhu. Uma ufuna ukufunda okwengeziwe nge-PHP, funda uqhubeke.

Ulimi lokuhlela oluqondiswe entweni

PHP has evolved into an ObjectOrientated programming language, igama elisho ukuthi “ukuklama izinto.” Ngenkathi i-PHP 4 ubene-ObjectOrientation ethile, ukukhishwa kwakamuva kwe-PHP, PHP 5, i-ObjectOriented ngokugcwele. Lokhu kusho ukuthi i-PHP ayisasileli emuva kwezinye izilimi zokuhlela uma kuziwa ezinhlelweni ezigxile entweni. Kunemibono eyiphutha, nokho, lokho kusaphikelela.

Izilimi zokuhlela ezigxile entweni zisebenzisa amakilasi ukuhlela idatha ngendlela enengqondo. Ikilasi ngalinye limelela uhlobo oluthile lwedatha. Amakilasi aqukethe izindlela nezibaluli futhi asetshenziswa njengesisekelo sokusebenzisana kwento. Amakilasi asetshenziselwa ukwenza imodeli yezinhlobo zedatha eyinkimbinkimbi. Ngokuphambene nezinhlobo zedatha ezilula ezisetshenziswa kukhodi yendabuko ye-PHP, I-OOP ivumela ukulandelana okunengqondo kwedatha.

Ukuhlela okugxile entweni kuyindlela enhle yokwenza ikhodi yakho ibe lula ukuyigcina. Ungasebenzisa kabusha ikhodi futhi usebenzise kabusha izingxenye ngaphandle kokukhathazeka ngokuthi zingqubuzana zodwa. Lokhu kuwusizo ikakhulukazi uma usebenza kumakhulu, izicelo eziyinkimbinkimbi. Ukusebenzisa uhlelo Olugxile Entweni kuzokwenza kube lula kakhulu ukunakekela nokusebenzisa kabusha ikhodi.

Izinzuzo zohlelo olugxile entweni ziningi. Ikuvumela ukuthi ubhekane nezinkinga eziyinkimbinkimbi ngokuletha ileveli entsha yokukhipha kukhodi yakho. Lokhu kwenziwa ngokuhlukanisa ikhodi ibe izigaba ezihlukene. Lawa makilasi anezinhlobo zedatha ezithile nokuziphatha okungashintshwa noma kusetshenziswe kabusha ngezinjongo ezihlukile.

Ukuhlela okugxile entweni kuyindlela enhle yokudala izinhlelo zokusebenza zewebhu ezinamandla. Inokuvumelana nezimo kakhulu kune-HTML, futhi kulula ukuyifunda nokusebenzisa. Futhi kuyindlela enhle yokwakha isoftware yebhizinisi ngalinye. Ngaphezu kokudala iwebhusayithi enamandla, I-PHP ikuvumela ukuthi udale isoftware yangokwezifiso ehlukile enkampanini yakho.

Ukuhlela okugxile entweni ku-PHP kukuvumela ukuthi uhlukanise amakilasi akho kwelinye. Esikhundleni sokuba nekilasi elilodwa elikhulu kanye namancane amaningana, ungaba namakilasi ahlukene nezindlela zekilasi ngalinye. Ngenxa yalokho, ikhodi yakho ivumelana nezimo, eyakheke kakhulu, futhi esebenza kahle kakhulu. Iphinde ikuvumela ukuthi uphathe ikhodi yakho kangcono.

Indlela engcono kakhulu yokutholela ulimi lwezinhlelo olukhethekile ukuxhumana nenethiwekhi yakho. Uma usuvele uneziqu emkhakheni ohlobene nesayensi yekhompyutha, ungabuza ozakwenu ukuthi basebenzisa luphi ulimi lokuhlela. Bangase bakwazi ukukunikeza amathiphu noma bakutshele mayelana nezilimi zokuhlela ezikhethekile ongazifunda uwedwa. Futhi ungasesha izikhundla ku-Stellenanzeigen ukuze ubone ukuthi yiziphi izilimi nenhlanganisela edingekayo.

Ngaphandle kwe-PHP, ungasebenzisa nezinye izilimi zokuhlela. URuby ungomunye wabo. Nokho, lolu limi lunezinkinga ezithile. Ngokwesibonelo, URuby uhamba kancane. I-Ruby isebenzisa izinhlobo zedatha ezinamandla.

Schnelle Programmiersprache

PHP is a highly flexible and powerful programming language that supports multiple databases and real-time monitoring. Izici zayo ezisebenziseka kalula ze-danbank zikwenza kube ukukhetha okuhle ekuthuthukisweni kwewebhu. I-PHP ingumthombo ovulekile, okusho ukuthi noma ubani angayilanda futhi ayisebenzise mahhala. Kukhona futhi umphakathi omkhulu we-PHP owabelana ngamathiphu nolwazi oluwusizo.

I-PHP isetshenziswa kabanzi embonini yokuthuthukiswa kwewebhu. Ukuthandwa kwayo kuphezulu, futhi ivamise ukusetshenziswa kukhodi engemuva kwamanye amawebhusayithi amakhulu ku-inthanethi. Ngaphezu kwalokho, I-PHP imahhala futhi ihlale ithuthukiswa. Nakuba, kukhona ukungalungi okumbalwa, okuhlanganisa ukukala kwayo okulinganiselwe nokungabikezeli, I-PHP iyisinqumo esiqinile.

I-PHP ine-syntax elula, okwenza kube lula ukuthi abahleli bezinhlelo bazilungise. Iphinde ishumekwe ngaphakathi kwe-HTML, okusho ukuthi ikhodi ibhalwe kahle kakhulu. I-PHP iwulimi lokuhlela olunamandla futhi oluguquguqukayo olungaxazulula izinkinga eziyinkimbinkimbi, ukuthuthukisa umkhawulo wokuncintisana wenkampani. Kanjalo, kubalulekile ukufunda nokuqonda ulimi ukuze udale izinhlelo zokusebenza zewebhu eziwusizo kakhulu nesofthiwe.

Kubalulekile futhi ukuphepha lapho uthuthukisa izinhlelo zokusebenza zewebhu. Ucwaningo lwakamuva luthole lokho 86% yezinhlelo zokusebenza ze-PHP zibe sengozini ebizwa nge-XSS. Lokhu akukona ukuphela komhlaba, njengoba umphakathi we-PHP uthathe izinyathelo eziningi zokwenza i-PHP iphephe. Nokho, I-PHP ayivikelekile ngokuphelele, futhi kudinga ukunakekelwa okwengeziwe nokunakwa ukuze kuvinjwe izinsongo zokuphepha. Uma ukhathazekile ngezokuphepha, I-Python iyisinqumo esingcono. Inezici eziningi zokuphepha futhi ingaphatha izinhlelo zokusebenza eziyinkimbinkimbi.

Ukufunda ulimi olusha lokuhlela kunzima, kodwa kulula kunalokho ongase ucabange. Uma umusha ekubhaleni amakhodi, kuwumqondo omuhle ukuqala ngolimi olulula ongalufunda, bese andisa ukusuka lapho. Kungumqondo omuhle futhi ukuqala ngolimi olusebenza nemitapo yolwazi nezinhlaka. Ukwengeza, kubalulekile ukucabangela ukuthi yiluphi uhlobo lwephrojekthi ongathanda ukuyisebenzisa ngolimi.

Uma umusha kumqondo wokuthuthukiswa kwewebhu, I-PHP ingaba inketho kuwe. Kulula ukuqalisa nge-PHP. Ulimi lunezinhlelo zokusebenza eziningi futhi lungasiza noma yimuphi umhleli. I-syntax yayo icacile futhi iyafundeka, okwenza ifanele abaqalayo. Kuyisinqumo esidumile sabathuthukisi bewebhu.

I-PHP nayo iyashesha kunezinye izilimi eziningi zokuhlela. I-PHP 7.x ithuthukise ukuhlanganiswa kwekhodi futhi ifika ku-2x ngokushesha kunomanduleli wayo. Ngezici zayo ezintsha ezifana ne-Zend Engine 3.0, I-PHP ishesha kakhulu kunangaphambili. Ngaphezu kwalokho, ulimi kulula ukuhlaziya izidingo kunezinye izilimi zokuhlela.

Uma kuziwa ezinhlelweni, I-PHP iyisinqumo esidumile sabathuthukisi bewebhu. Kulula ukufunda nokusebenzisa, futhi iguquguquka kakhulu kune-Java. Iphinde ikuvumela ukuthi usebenze ngekhodi engafanele futhi yamahhala, okuyinzuzo enkulu konjiniyela. Ngaphezu kwalokho, I-PHP ingumthombo ovulekile futhi isebenza kunoma iyiphi ipulatifomu.

Objektorientierte Programmiersprache

Ukuhlela Okugxile Kwezinto (OOP) indlela yokuhlela esebenzisa izinto njengezakhiwo zohlelo. Kule ndlela, izinto zichazwa njengezinhlaka ezikhona okwamanje. Lezi zinhlangano zingaphinda zibe nezakhiwo futhi zihlanganyele nezinye izinto. Izinto zihlukile emakilasini, okuyizingcezu zekhodi ezimile okufanele zihlolwe futhi zihlale zinjalo. I-PHP isebenzisa isigaba samakilasi, ebizwa ngokuthi Izinto, ukuhlela ukusebenza kohlelo.

Ukuhlela okugxile entweni ku-PHP kwenza kube lula ukusebenzisa kabusha nokugcina ikhodi. Imiqondo ye-Object-Orientation ivame ukusebenziseka ezinhlelweni eziyinkimbinkimbi. PHP 5 inezinzuzo eziningana kunezinguqulo zangaphambili. Kweyodwa, inikeza ukulawula kokufinyelela okungcono kuzici nezakhiwo. Lokhu kuvumela abathuthukisi ukuthi babhale izinhlelo zokusebenza eziyinkimbinkimbi kakhulu ngesikhathi esincane.

I-PHP iphinde inikeze izindlela zemilingo, ezingavamile ukucelwa umsebenzisi kodwa ezibizwa nge-PHP uma izimo ezithile zihlangatshezwa. Lezi zindlela ziqanjwe nge-double-understroke, nakuba kungcono kakhulu ukugwema ukusebenzisa lo mlingiswa lapho uqamba izindlela. Izindlela zingabuye ziqoqwe ngamaqembu.

Ku-PHP, amakilasi anezindawo ezizimele nezikahulumeni. Izakhiwo eziyimfihlo yizona ezivikeleke kakhulu. Izakhiwo eziyimfihlo zifinyeleleka kuphela ngamalungu ekilasi. Izakhiwo eziyimfihlo, njengaleyo esetshenziswa ukudala into, azifinyeleleki esidlangalaleni. Amakilasi angasebenzisa futhi i-pfeiloperator -> ukuze bafinyelele ezabo izakhiwo nezindlela zabo.

Uhlelo olugxile kuzinto luvumela abathuthukisi ukuthi benze imodeli yomhlaba ngokuya ngezinto. Lezi zinto zinedatha nezindlela futhi zingasetshenziswa ezinhlelweni ezihlukahlukene. Amakilasi achazwa ngokuhlanganisa izinto ezifanayo. Lapho ikilasi lichazwa, I-Object ingenza imisebenzi eminingi futhi iphinde isetshenziswe.

Ukuhlela okugxile kuzinto kuvumela abathuthukisi ukuthi babhale izinhlelo ezisebenzisa isizindalwazi. Izinto zingaphinda zidalwe futhi zigcinwe ngaphakathi kwamafayela we-PHP. Lokhu kungenzeka ngokusebenzisa ama-arrays. Ngokusebenzisa ama-arrays, ungagcina amanani amaningi ngesikhathi esisodwa. Ungasebenzisa futhi umyalo owakhelwe ngaphakathi obizwa ngokuthi i-echo. Ungakwazi futhi ukushumeka amazwibela amaningi ekhodi ku-HTML ekhona.

Njengoba igama liphakamisa, Ukuhlela okugxile entweni kusebenzisa izimo ukulawula ukuhamba kolwazi. Lona umehluko omkhulu phakathi kwezinhlelo ezibalulekile nezisebenzayo. Ngenkathi zombili izilimi zisebenzisa izimo ukuphatha idatha, isitayela esisebenzayo sidinga ukukhishwa okwengeziwe nokuvumelana nezimo. Abathuthukisi be-PHP bangabhala ikhodi esebenza kahle eqenjini labo kuyilapho besebenzisa uhlaka olubanzi.

I-OOP futhi isebenzisa umqondo wekilasi, elimele ibhizinisi langempela. Into iyisibonelo sekilasi. Ngokwesibonelo, igama lomuntu, iminyaka yobudala, inombolo yocingo, kanye nolunye ulwazi lungagcinwa ekilasini lomuntu. Into ingaba nezindlela namanani akuvumela ukuthi wenze imisebenzi kuyo.