Timestamps pa Php: timestamp, ndi mawerengedwe a nthawi

Nthawi n'kofunika nthawi zonse. malo sumalamulidwa ndi nthawi ndiponso osagwiritsa ntchito izo zonse, osati kuti ndilibe ufulu moyo, koma ndithudi si zonse zochitika zamakono Intaneti chuma.

ntchito Php ntchito ndi nthawi

Pa tsiku Php ndi nthawi umaimiridwa ndi mndandanda wa ntchito, yokwanira ntchito popanda malamulo, ndi kuthekera atakhala nthawi ndi tsiku maziko umodzi. mapulogalamu akhoza sapeza nthawi sitampu kujambula (njanji) zochitika ndi kuchita kuwerengetsera masiku.

Osada kulemba mwambo malamulo asaaonerera (kuwerengetsa) chiwerengero cha masiku mwezi, adzatumpha chaka, tsiku la sabata, dzina mwezi, ndi zina zotero. Mukhoza ntchitoyi ndi kwathunthu amadalira Php kuti athe kugwira ntchito ndi njirayi.

Mfundo ntchito awiri (getTimeStamp, GetDate) zokwanira kuthetsa vuto lililonse pamene tikugwira ntchito ndi tsiku ndi / kapena nthawi. Koma achibwana mapulogalamu mukhoza kugwiritsa ntchito zinthu zina.

Zofunika Php timestamp - ndi mtundu wa chizindikiro n'zosangalatsa kumva kuti afikire iliyonse chachiwiri latsopano n'zosangalatsa kumva tanthauzo (phindu). Mbiri yakale, chiwerengero ichi ndi chiwerengero cha masekondi kuyambira usiku January 1 1970 chaka.

Cholinga chenicheni ndi phindu Timestamp

Mu mapulogalamu, pali nthawi zonse anali ambiri chosaiwalika masiku. Monga mapulogalamu iliyonse yabwino akukumbukira tsiku pulogalamu yake yoyamba, ndi yuniksoidov banja amalemekeza chiyambi cha nyengo yake.

Pankhaniyi, lingaliro chifukwa kukhazikitsa njira zambiri mu nthawi. Ntchito kungakhale kokha mpaka 19 January 2038. 3:14:08 chiwerengero cha masekondi kuyambira chaka 01/01/1970 kufika 2 ^ 31 (2147483648), zomwe zimachititsa kuti chiwerengero negative. Akuti ntchito sanali 32-bit 64-bit variable kusunga nthawi kuchedwa vuto adzalola zaka biliyoni 300: mapulogalamu ngati nsikidzi, ngati nthabwala, makamaka 2000.

Yowerengera nyengo ndi mtima wa tsiku

Nthawi umaimiridwa ndi nambala yaikulu, limachititsa ndi odziwa.

Lingaliro chidwi ndi ntchito masamu ili ngati makiyi umboni, ndi / kapena zochitika wapadera. Ntchito pulogalamu pa Php timestamp molumikizana ndi ID wosuta kapena mlendo ngati makiyi, simungathe nkhawa wapadera ake ndi ataye nthawi pa izo.

The osiyanitsidwa kusandutsa wa tsiku ndi nthawi

nthawi () Ntchito mwachindunji amapereka nzeru n'zosangalatsa kumva za sitampu nthawi. Kaya ndi pamene kutembenuka Php tsiku timestamp akhala anachita, akhoza kuwabwezera ku chifaniziro iliyonse yabwino tsiku ntchito (mtundu [, timestamp]). Ngati chizindikiro chachiwiri akusowa, mudzakhala tsiku panopa ndi / kapena nthawi. Mtengo akhoza kukhala mtundu uliwonse, zida chinenero kupereka njira zonse zofunikira malo ndi tsiku ndi nthawi masanjidwe.

Yosungirako mu mawonekedwe n'zosangalatsa kumva ndi nthawi poyerekeza ndi khalidwe, ndipo kuwonjezera, kwambiri wosalira luso kuthetsa. Kumathandizanso ndi kuthekera ntchito masamu yosavuta kulamulira nyengo ndi kuwerengetsa masiku.

Kupewa cholakwa choterocho mu kuwerengetsera kwa si zotheka chifukwa cha mawerengedwe aliyense kutanthauziridwa mu masoka tsiku / nthawi mtundu ndi nthawizonse ndi wolondola.

Kutanthauzira kwa nthawi

Ndipo ngakhale Php tsiku timestamp ndi kutsatira-ndi chiwerengero ndi yabwino ndi wabwino mwa ano, koma anasunga kwambiri zifukwa kusunga ndi kugwiritsa ntchito tsiku mu zachilengedwe ake, ndipo nthawizina mu mtundu dziko kwambiri.

mphamvu makompyuta Modern 'ndi chokwanira, Nawonso achichepere mogwira mtima kuimira ndi sitolo zambiri, chitsanzo ikuchitika mofulumira ndi aligorivimu zolondola achita ntchito masiku weniweni alandiridwa ndithu.

nthawi Assembly ndi ndalama mu mabayiti kwa nthawi yaitali kale. Si ntchito zambiri zimene zimafuna olondola makina malamulo ndi yaying'ono ulaliki deta, ambiri a ntchito yogwirizana ndi muzochitika othandiza chikhalidwe, pamene tsiku kuperekedwa mtundu yake.

Ndi izi zikugwira ntchito deta pa Php, timestamp sasiya tanthauzo lake ndi zothandiza, ndiponso ayenera kukhala mu nkhokwe ya mapulogalamu aluso.

nthawi yapano

The Tinganene zonse ntchito Php Nthawi: nthawi yapano = timestamp. masiku onse mwachindunji pamanja ndi wosuta kapena mapulogalamu, kawirikawiri Data :. chiyambi kapena mapeto a nthawi, tsiku lobadwa, ntchito, etc. Nthawi deta analandira ndi kalendala zokambirana kutumikiridwa. Makamaka, datapicker izi mwa jQuery, amene amalola kulowa tsiku ndi / kapena nthawi mwachindunji mu chilengedwe osatsegula, pa tsamba.

Datapicker ndi chitukuko ofanana anachita osati kwathunthu zinchito. Zimathandizanso luso ikonza mmene kutanthauzira kwa mtundu tsiku / nthawi komanso mayina a miyezi, masiku a sabata, zinthu kulekana khalidwe la tsiku ndi nthawi.

mapulogalamu A angachichite pa tsiku Php kuti timestamp kukayezetsa, poyerekezera, ntchito masamu.

Deta analowa ndi wosuta (mlendo) - uyu si ntchito Php timestamp amene cholinga chake ndi chosiyana. Komabe, iyi yoyenera ntchito Php amalola mapulogalamu kulamulira nthawi ya kulowa deta ndi madeti wosuta.