Timestamps kwi PHP: simiswe, nokubalwa ngexesha

Ixesha ubalulekile njalo. Le ndawo alulawulwa ixesha kwaye ungayisebenzisi rhoqo, kungekhona ukuba awunalo ilungelo ebomini, kodwa nakanjani na resources online mihla-mvo ngokupheleleyo.

imisebenzi PHP asebenze ixesha

Ngomhla PHP kunye nexesha simelwe iseti imisebenzi, kwanele ukuba ukusebenza ngaphandle kwemiqathango, kwaye kungenzeka ngokundimisela ixesha nomhla ukuya kwisiseko enye. Umphuhlisi angasoloko ukufumana ixesha isitampu emazishicilelwe (track) iziganeko isenza nemihla izibalo.

Akukho mfuneko ukubhala ikhowudi isiko olulawula (ekubaleni) inani leentsuku ngenyanga, konyaka omnqakathi, usuku lweveki, igama ngenyanga, njalo njalo Uyakwazi ukusebenza iprojekthi. Size sithembele ngokupheleleyo kwi PHP ukuze bakwazi ukusebenza nalo olu khetho.

Enyanisweni, imisebenzi emibini (getTimeStamp, GetDate) kwanele ukusombulula nayiphi na ingxaki xa esebenza kunye nomhla kunye / okanye ixesha. Kodwa developer ongenamava Ungasebenzisa kwakhona eminye imisebenzi.

Kubalulekile ukuba PHP simiswe - luhlobo label wokwamanani ukuba yesibini zonke uzuza intsingiselo entsha ngokwamanani (value). Ngokwembali, eli nani linani lemizuzwana ukususela ezinzulwini zobusuku, kaJanuwari 1 1970 ngonyaka.

Injongo ekhoyo kunye nexabiso Timestamp

Xa udweliso, kwakusoloko kukho imihla emininzi umaki. Njengalo naluphi na uhlelo endilisekileyo ukhumbula umhla inkqubo yakhe yokuqala, yaye yuniksoidov usapho imbeko ekuqaleni kwexesha lakhe.

Kulo mzekelo, ingcamango ngenxa yokuqaliswa kwe indlela lunqongophele kwexesha. Yisebenzise kunokuba kuphela ukuya kwi-19 Januwari 2038. 3:14:08 Inani lemizuzwana ukususela kunyaka 01/01/1970 ukufikelela 2 ^ 31 (2147483648), nto leyo eyenza ezimbi inani. Kuthiwa ukuba ukusetyenziswa non-32-bit kunye bit-64 kwi ukugcina ixesha ingxaki kulibaziseka kuya kwenza eminye iminyaka billion 300: badwelisi benkqubo ezifana bugs, ngathi a joke, ingakumbi emva 2000.

Ekubaleni isithuba kunye nokuzimisela komhla

Ixesha emelwe linani lodidi, yenza kube lula ukuba izibalo elula.

An into umdla kukuba ukusebenzisa le izibalo liqhosha yerekhodi, kunye / okanye neziganeko ezizodwa. Ukusebenzisa inkqubo kwi PHP simiswe ngokusebenzisana umsebenzisi ID okanye zokutyelela isitshixo, unako Ungakhathazeki malunga ukohluka zayo ungachithi ixesha kuyo.

Eguqulweyo ngokubaxwa i okuguqula ngomhla kunye nexesha

ixesha () umsebenzi unika ngqo nolwazi ngamanani ixesha lokwenziwa. Enoba xa umhla PHP ukuguqulwa ukuba simiswe lwenziwe, lunokuziswa njani kwaye emva nayiphi na ukumelwa elula umhla umsebenzi the (format [, simiswe]). Ukuba eyesibini iparameter ilahlekile, uya kuba umhla wangoku kunye / okanye ixesha. Ixabiso lingaba naliphi na fomati, izixhobo ulwimi kunika zonke iinketho eziyimfuneko ukuze indawo kunye nomhla kunye ukufomathwa ixesha.

Ukugcinwa ngohlobo wokwamanani usoloko Kukhethwa umlinganiswa, yaye ukongezelela, lula kakhulu ukukwazi ukulungisa. Kubalulekile kwakhona ukuba kungenzeka ngokusebenzisa imathematika elula ukulawula yamaxesha nemihla nokubala.

Ukuthintela impazamo kwindawo izibalo kungenzeka neze, isiphumo nayiphi ubalo into evakalayo kwi umhla / ifomathi yexesha yendalo isoloko ilungile.

Eyendawo ixesha

Kwaye nangona umhla PHP ukuba simiswe nokulandela-up kunye nenombolo lula kwaye efanelekileyo ehlabathini namhlanje, kodwa walondoloza ezininzi izizathu ukugcina nokusebenzisa umhla yayo yemvelo, kwaye ngamanye amaxesha ngendlela kazwelonke kakhulu.

amandla iikhompyutha Modern 'Kwanele, uvimba ngempumelelo ukumela kunye nokugcina ulwazi, lo sampuli wenziwe ngokukhawuleza futhi indlela echanekileyo wenza umsebenzi kunye nemihla yokwenene yamkelekile kakhulu.

amaxesha zeNdibano yokonga kwi bytes ixesha elide ngaphambili. Hayi imisebenzi ezininzi kangangokuba ifuna ikhowudi umatshini echanekileyo ntetho indawo ye data, uninzi lweeprojekthi enxulumene karhulumente practical zentlalo, apho umhla eza kunikwa format yayo efanelekileyo.

Kuko konke oku ngokuthi balawula data kwi PHP, simiswe angalahlekelwa intsingiselo yawo, yaye sifanele ukuba sibe nendawo yokugcina ngumphuhlisi abanezakhono.

ixesha langoku

Umthetho oqhelekileyo yonke imisebenzi PHP Ixesha: ixesha langoku = simiswe. Yonke imihla icaciswe ngesandla ngumsebenzisi okanye umphuhlisi, ngokuqhelekileyo Data :. isiqalo okanye ekupheleni kwethuba, umhla wokuzalwa, ingqesho, njl data Ixesha yamkelwa i khalenda interactive alawulwa. Ingakumbi, le datapicker yi-jQuery, nto leyo evumela ukungena ngqo umhla kunye / okanye ixesha kokusingqongileyo umkhangeli zincwadi, kwiphepha lewebhu.

Datapicker kunye nophuhliso efanayo azenziwanga ngokupheleleyo esebenza kuphela. Kwakhona zinika ukukwazi ukuba yenziwa njani ngokusesikweni zalapha ekhaya kwabo umhla / ixesha ifomati, kwakunye namagama kweenyanga, iintsuku zeveki, izinto ukungcola umlinganiswa umhla kunye nexesha.

A developer uyakwazi ukwenza ngomhla PHP ukuba simiswe uvavanyo, uthelekiso, imisebenzi arithmetic.

Idatha wangena ngumsebenzisi (undwendwe) - oku na umsebenzi PHP simiswe esinenjongo eyahlukileyo. Noko ke, le misebenzi PHP ethile ikuvumela umphuhlisi ukulawula ixesha lokungena data kunye nemihla yomsebenzisi.