Izitembu ku PHP: Isitembu sesikhathi, futhi ukubala isikhathi

Isikhathi kubalulekile zikhathi zonke. Isayithi hhayi kulawulwa isikhathi ungayisebenzisi njalo, hhayi ukuthi Anginayo unelungelo lempilo, kodwa akulona neze izinsiza iyavela-full yesimanje online.

PHP imisebenzi ngokusebenzisana ngesikhathi

Ngelanga PHP nesikhathi emelelwa iqoqo imisebenzi, esanele isebenze ngaphandle kwemingcele, kanye nokwenzeka ukubeka isikhathi nosuku isizinda esisodwa. Umthuthukisi bayomane isitembu sesikhathi zokuqopha (ithrekhi) imicimbi kanye kwenziwa umsebenzi wokubalisisa nezinsuku.

Asikho isidingo ukubhala ikhodi yezifiso elawula (kubalwa) inani lezinsuku ngenyanga, uma kuwunyaka, usuku lwesonto, igama ngenyanga, kanjalonjalo. Ungakwazi ukusebenza yephrojekthi ukwethembela ngokuphelele PHP ukuze bakwazi ukusebenza le ndlela.

Ngomqondo onabile, inkulumo imisebenzi emibili (getTimeStamp, GetDate) kwanele ukuxazulula noma yiziphi izinkinga nengisebenza usuku kanye / noma isikhathi. Kodwa unjiniyela ongenalwazi Ungaphinda usebenzise eminye imisebenzi.

Ezibalulekile PHP isitembu sesikhathi - uhlobo ilebula kwamanani ngomzuzwana ozuza nencazelo entsha zezinombolo (inani). Ngokomlando lokhu kufakwa inombolo inani imizuzwana kusukela phakathi kwamabili, 1 Januwari 1970 ngonyaka.

ngokoqobo Inhloso nokubaluleka Isitembu sesikhathi

Ngo izinhlelo kamu, babehlale bekhona izinsuku eziningi eyingqopha. Njenganoma yimuphi uMklami ehloniphekile ukhumbula usuku Uhlelo wakhe wokuqala ngqa, kwaba kanye yuniksoidov umndeni ihlonipha ekuqaleni kwenkathi yakhe.

Kulokhu, umbono ngenxa ukuqaliswa indlela kukhawulwe ngesikhathi. Sebenzisa kungaba kuphela afinyelela ku-19 Januwari 2038. 3:14:08 Isibalo imizuzwana kusukela ngonyaka 01/01/1970 ukufinyelela 2 ^ 31 (2147483648), okwenza isibalo ezimbi. Kuthiwa ukusetshenziswa non-32-bit ne-64-bit variable ukugcina isikhathi inkinga ukubambezeleka kuzovumela eminye iminyaka bhiliyoni 300: program efana amaphutha, like ihlaya, ikakhulukazi ngemva 2000.

Ukubalwa kwesikhathi kuyo nokuzimisela usuku

Isikhathi imelelwa inombolo esiyinhloko, kwenza kube nokwenzeka ukuba abe izibalo ezilula.

Umbono ezithakazelisayo kangakanani ukusebenzisa le izibalo njengoba ukhiye irekhodi, kanye / noma izenzakalo esiyingqayizivele. Ukusebenzisa uhlelo PHP Isitembu sesikhathi ngokuhlanganyela i-ID umsebenzisi noma isivakashi njengoba ukhiye, awukwazi ukhathazeke ehlukile yayo hhayi ukuchitha isikhathi kuso.

I ephambene uguqule of usuku nesikhathi

isikhathi () umsebenzi unika ngqo ulwazi kwamanani isitembu sesikhathi. Kungakhathaliseki kanjani futhi nini ukuguqulwa PHP usuku Isitembu sesikhathi eve, kungaba angabuye abuyiselwe yikuphi ukumelela elula usuku umsebenzi (ifomethi [, Isitembu sesikhathi]). Uma Ipharamitha yesibili sishoda, uzobe usuku zamanje futhi / noma isikhathi. Inani kungaba yisiphi isakhiwo, amathuluzi ulimi ukuhlinzeka zonke izinketho ezidingekile indawo kanye usuku nesikhathi ukufomatha.

Isitoreji ifomu zezinombolo kuhlale kungcono ukuba umlingisi, futhi ngaphezu kwalokho, kakhulu lula ikhono ukuhlunga. Okubalulekile futhi kungenzeka ngokusebenzisa wezibalo elula ukulawula ngezikhathi futhi kubalwa nezinsuku.

Vimbela iphutha anjalo esikhathini izibalo kungenzeka neze, umphumela wanoma isiphi ukubala sitolikwa semvelo date / isikhathi format ilungile njalo.

Kwasendaweni kwesikhathi

Futhi nakuba PHP usuku Isitembu sesikhathi nokulandelela nenani izinto zibe lula futhi enhle ezweni lanamuhla, kodwa walondoloza eziningi izizathu ukugcina futhi usebenzise usuku yemvelo yayo, futhi ngezinye izikhathi ngefomethi kazwelonke kakhulu.

amandla Amacomputer anamuhla 'kwanele, database amelela ngempumelelo kanye nokugcina imininingwane, isampuli Kwenziwa ngokushesha futhi algorithm efanele owenza umsebenzi nge izinsuku zangempela kwamukelekile ngempela.

izikhathi OMhlangano nasemaHholo ukonga amabhayithi isikhathi eside esikhathini esidlule. Hhayi imisebenzi eziningi kangaka okudinga lesifanele ikhodi umshini futhi isethulo compact idatha, iningi amaphrojekthi ehlangene sphere esisebenzayo nomphakathi, lapho usuku okumele inikezwe ngefomethi yako efanele.

Kucatshangwa ngakho konke lokhu ngokwenza izakhi idatha ku PHP, isitembu sesikhathi akaphelelwa ukubaluleka salo esisebenzayo kanye ofanelwe ukuba ku arsenal of umthuthukisi onekhono.

isikhathi samanje

Ngokuvamile of yonke imisebenzi PHP Isikhathi: Isikhathi samanje = Isitembu sesikhathi. Zonke izinsuku kumele bucaciswe ngesandla ngumsebenzisi noma umthuthukisi, ngokuvamile Idatha :. Ekuqaleni noma ukuphela kwesikhathi, usuku lokuzalwa, umsebenzi, njll Isikhathi idatha yamukelwe i ikhalenda interactive iqondiswa. Kahle kahle, lokhu datapicker yi jQuery, okuvumela ukuba faka usuku kanye / noma isikhathi ngqo imvelo isiphequluli, ekhasini lewebhu.

Datapicker nokuthuthukiswa efanayo azenziwanga ngokugcwele kuphela sokusebenza. Zinikeza ikhono oyifisayo indlela kwasendaweni usuku / ifomethi yesikhathi, kanye namagama izinyanga, emalanga eliviki, izakhi ngokwahlukana nobunjalo usuku nesikhathi.

A umthuthukisi ongenza ngosuku PHP ukuze Isitembu sesikhathi ngokuhlola, ukuqhathanisa, imisebenzi izibalo.

Idatha angena ngumsebenzisi (isivakashi) - lokhu akuwona umsebenzi PHP Isitembu sesikhathi ogama njongo lihlukile. Nokho, lokhu PHP imisebenzi ethize ivumela unjiniyela ukulawula isikhathi kufakwa kanye nezinsuku umsebenzisi.