Php: Ukusebenza Amafayela

"Ulimi Php» kuyinto ulimi lokwakha izinhlelo. It is ikakhulukazi abhalwe wonke amasayithi khona kuyi-Internet. Chaza wonke ulimi kunzima kakhulu, kodwa lesi sihloko sigxile ebuhlotsheni ukudalwa amafayela futhi sisebenze nabo.

Ulimi Php: Ukusebenza Amafayela

Lapho inqubo yokudala ngesikhathi amafayela Php ngokusebenzisa isithombe esikhethekile yasekuqaleni. Isethi esezingeni Php imisebenzi Awekho izici ekhethekile ukukusiza usebenze ngamafayela ezahlukene. Itholakala kuphela yathola enye fopen () umsebenzi okhethekile, esisetshenziselwa ukuthola uxhumano ne ifayela. Kodwa kukhona sici: uma ngabe ifayela ukuthi oyicelile ayitholakali ke le ndlela ngokuzenzekelayo ukudala ifayela omusha inegama elifanayo.

fopen Resourse (igama, uhlobo). NAME kuzosiza ukusungula namkha akhombe amagama ifayela zidalwe noma kakade ayatholakala. TYPE - uhlobo lwefayela ukuba oyicelelayo kubani ofuna ukusebenza kamuva.

Uhlobo ukufinyelela angase abe namanani ahlukene. Ulimi Php umsebenzi ngamafayela kuhilela izinhlobo eziningana izenzo zefayela.

R - Setha pointer ekuqaleni ifayela futhi ifayela elivuliwe ukuze ulifunde.

R + - Setha pointer ekuqaleni ifayela futhi ukuyivula ukufunda noma ukubhala ikumodi kanyekanye.

W - Uma ifayela itholakala ke okuqukethwe luyasuswa, futhi uyivule ngokubhala. Uma kungaqali, kudala esisha elinegama elifanayo. Ngemva kokwenza imisebenzi amafayela idatha okwenziwe lokuvala yabo futhi ekulondolozeni idatha. fclose () futhi kumelwe kusebenze njengesibonakaliso inqubo ifayela lokuvala.

Ngo Php usebenze ngamafayela wenza lokhu ikakhulukazi ezimweni lapho kuyadingeka ukwenza izenzo ezithile ngenhlonipho la mafayela: dala, hlela, noma ukususa irekhodi. Uma udala ikhasi Php umsebenzi ngamafayela kukhiqizwa ngokuvumelana syntax ulimi, njengoba kuchaziwe ngenhla.

Ukususa ifayela Php

Ukuze usebenze kukhompyutha wendawo ngamafayela Php, kufanele ufake kuseva yendawo, okufana intando yangempela sokulingisa uzibophe ikhasi Php database. amafayela Php badalwe kuseva yendawo efana, futhi ngeke kungabuye babeqoqa ngaye kuphela. Ukuze wenze lokhu udinga ukuya kuseva yendawo, ukuthola ifayela futhi uyisuse. Ukuze ukwazi ukususa amafayela evamile ngokufinyelela kubo ngokusebenzisa ikhasi Php, kukhona ekhethekile izici ulimi ezikuvumela ukuba uqaphele le nqubo elula.

Susa amafayela impinda

Lapho noMnyango Php amafayela kungabangela izinkinga uma kuzodingeka amanye efanayo amafayela. Abakwazi zisuswe ngokusebenzisa umshini we-virtual, kwesokudla kubhasikidi, ishiya kuphela okuyinto edingekayo. Noma, uma udinga kokubili, ungaqamba kabusha kubo. Ukuze ususe amafayela ezivamile elinegama elifanayo, ungase sebenzisa ngokukhethekile ezibhaliwe ngalezi zinhloso squeaks. Basuke ezifakiwe ikhasi Php futhi ngesikhathi esifanele kwabangela, okwenza umsebenzi ukuthi uhlelo.

Njengoba nganoma ngaluphi ulimi izinhlelo, Php, zikhona ongakhetha eziningana ukuze nokusebenza ngamafayela.

1. Ukuvula ifayela ukuze ulifunde.
2. Ukuvula ifayela sokufunda noma ukubhala.
3. Dala ifayela elisha.
4. Susa ifayela.
5. Ukuqamba kabusha ifayela.

Eyokuqala imisebenzi letintsatfu letichazwe lapha ngenhla. Eyesine luyasetshenziswa usebenzisa umsebenzi okhethekile ukususa ukuxhumanisa Php. Lesi sici ikuvumela ukuba ukuthola ifayela oyifunayo phakathi kwazo zonke etholakala kwisikhangisi, lapho wathunyelwa, futhi uyisuse. Isenzo yesihlanu ongazithatha ngesandla ukuthola ifayela futhi kabusha. Noma yimuphi ifayela zingase zihlanzwe umsebenzi ukubhala ngaphezulu uqobo nokubuyisa ilungelo nika igama.

Ukusebenza Amafayela Php akuyona esifana nezinye izilimi izinhlelo, kepha kuhlela kwemavi kuyafana ngolimi "C ++", okwenza kube lula ukuqonda ke nezangalezo ngolimi "C". Ukuze ufunde ulimi Of Php, kuyodingeka ukuchitha isikhathi kakhulu kancane, uma ukwazi izinto eziyisisekelo izinhlelo.