PHP programming yog dab tsi?

The PHP Programmiersprache has emerged as one of the most popular and widely used languages to build websites. Nws yog kev nrawm thiab yooj yim rau kev kawm cov khoom-orienteierte programmeRache uas yog siv ntau cov ntawv thov, Los ntawm kev mus kuaj tshuab thiab cov ntsiab lus tswj hwm cov vev xaib kom hosting. Yog tias koj tab tom nrhiav kom paub ntau ntxiv txog PHP, nyeem rau.

Object-oriented programming lus

PHP has evolved into an ObjectOrientated programming language, Ib lo lus uas txhais tau tias “Cov khoom tsim qauv.” Thaum php 4 muaj qee cov khoom siv, Qhov tseeb PHP tso tawm, PHP 5, yog tag nrho cov khoom siv. Qhov no txhais tau tias PHP tsis yog lagging qab lwm cov lus txheej txheem programming thaum nws los txog rau lub hom phiaj. Muaj qee qhov kev nkag siab tsis meej, txawm li cas los xij, uas tseem muaj.

Cov khoom siv-qhia cov txheej txheem siv cov chav kawm siv cov chav kawm npaj cov ntaub ntawv hauv cov laj thawj. Txhua chav kawm sawv cev rau ib hom ntaub ntawv. Cov chav kawm muaj cov hau kev thiab cov cwj pwm thiab siv ua lub hauv paus rau cov kev sib txuam. Cov chav kawm tau siv los ua qauv cov ntaub ntawv nyuaj. Hauv kev sib piv rau cov datatypes yooj yim uas siv hauv kev coj ua ntawm PHP code, OOP tso cai rau cov lus qhia txog cov lus qhia ntawm cov ntaub ntawv.

Lub hom phiaj-taw qhia txoj haujlwm yog ib txoj hauv kev zoo los ua kom koj cov cai yooj yim los tswj. Koj tuaj yeem rov qab rov siv cov lej thiab rov siv cov khoom siv tsis txhob txhawj txog lawv tsis sib haum xeeb nrog txhua lwm yam. Qhov no yog qhov tshwj xeeb tshaj yog thaum ua haujlwm ntawm loj, Cov kev siv complex. Siv cov khoom-taw qhia kev kawm yuav ua kom nws yooj yim dua los tswj thiab rov siv tus lej.

Cov txiaj ntsig ntawm cov khoom-taw qhia tau muaj ntau lub cajmeem ntau. Nws tso cai rau koj cuam tshuam nrog cov teeb meem nyuaj los ntawm kev nqa ib qib tshiab ntawm abstraction rau koj cov cai. Qhov no yog ua los ntawm kev sib cais code rau hauv cov chav kawm sib txawv. Cov chav kawm no muaj datatypes tshwj xeeb thiab tus cwj pwm uas tuaj yeem hloov kho lossis siv rau cov laj thawj sib txawv.

Lub Hom Phiaj-Qhia Txog Kev Kawm yog txoj hauv kev zoo los tsim cov web thov siv hluav taws xob. Nws muaj ntau qhov yooj ntau dua HTML, Thiab nws yooj yim los kawm thiab siv. Nws tseem yog qhov kev xaiv zoo rau tsim cov software lag luam. Ntxiv nrog rau kev tsim lub vev xaib muaj lub vev xaib dynamic, PHP tso cai rau koj los tsim cov software kev cai uas txawv rau koj lub tuam txhab.

Lub hom phiaj-taw qhia lub cajmeem hauv PHP tso cai rau koj cais koj cov chav kawm los ntawm ib leeg. Hloov chaw muaj ib chav kawm loj thiab ntau tus me dua, Koj tuaj yeem muaj cov chav kawm sib cais thiab cov hau kev rau txhua chav kawm. Raws li qhov tshwm sim, Koj cov cai hloov tau yooj yim dua, ntau qauv, thiab ntau ntxiv. Nws tseem tso cai rau koj los tswj koj cov cai zoo dua.

Txoj hauv kev zoo tshaj los nrhiav cov lus tshwj xeeb programming rau koj yog los sab laj nrog koj lub network. Yog tias koj twb muaj degree hauv ib daim teb ntsig txog computer science, Koj tuaj yeem nug koj cov npoj yaig yuav ua li cas programming lus lawv siv. Lawv tuaj yeem muab qee cov lus qhia rau koj lossis qhia koj txog cov lus tshwj xeeb uas koj tuaj yeem kawm tau ntawm koj tus kheej. Koj tseem tuaj yeem tshawb nrhiav cov haujlwm ntawm stellenanzeighigen kom pom cov lus twg thiab kev sib xyaw ua ke yog hauv kev thov.

Dhau li ntawm php, Koj kuj tseem tuaj yeem siv lwm cov lus programming. Ruby yog ib qho ntawm lawv. Txawm li cas los, Cov lus no muaj qee qhov teeb meem. Piv txwv li, Ruby yog qeeb heev. Ruby Siv Dynatypes.

Schnelle Programmiersprache

PHP is a highly flexible and powerful programming language that supports multiple databases and real-time monitoring. Nws datenbank-phooj ywg nta ua nws txoj kev xaiv zoo rau kev txhim kho web. PHP yog qhib qhov chaw, uas ib leej twg muaj peev xwm rub tawm thiab siv nws dawb. Kuj tseem muaj cov lus qhia hauv zej zog loj uas cov lus qhia tseem ceeb thiab cov ntaub ntawv.

PHP tau siv dav hauv lub vev xaib kev lag luam. Nws cov koob meej yog siab, Thiab nws feem ntau siv nyob rau hauv cov cai tom qab qee cov vev xaib loj tshaj plaws hauv Is Taws Nem. Ntxiv rau, PHP yog pub dawb thiab yog tas li tau txhim kho. Txawm yog, Muaj ob peb qhov tsis zoo, suav nrog nws qhov tsawg tsawg scalability thiab tsis tau txais kev pab, PHP yog kev xaiv.

PHP muaj qhov yooj yim syntax, ua rau nws yooj yim rau programmers hloov. Nws tseem kos nyob rau hauv HTML, uas txhais tau tias cov cai yog sau tau zoo heev. PHP yog ib hom lus muaj zog thiab yoog raws cov lus uas tuaj yeem daws cov teeb meem nyuaj, Txhim kho lub tuam txhab sib tw. Xws li, Nws yog ib qho tseem ceeb kom kawm thiab nkag siab cov lus kom tsim cov ntawv thov web thiab software.

Nws tseem yog ib qho tseem ceeb kom muaj kev nyab xeeb thaum tsim lub web applications. Ib qho kev tshawb fawb tsis ntev los no pom tias 86% ntawm php cov ntawv thov muaj qhov tsis muaj zog hu ua xss. Qhov no tsis yog qhov kawg ntawm lub ntiaj teb, Raws li PHP zej zog tau ua ntau kauj ruam los ua PHP muaj kev nyab xeeb. Txawm li cas los, PHP tsis yog ruaj ntseg, Thiab nws yuav tsum tau saib xyuas thiab saib xyuas kom tiv thaiv kev nyab xeeb kev hem thawj. Yog tias koj txhawj xeeb txog kev ruaj ntseg, Sej yog qhov kev xaiv zoo dua. Nws muaj ntau cov nta kev ruaj ntseg thiab tuaj yeem ua rau cov ntawv thov complex ntau.

Kawm cov lus tshiab programming yog qhov nyuaj, Tab sis nws yooj yim dua li koj yuav xav. Yog tias koj tshiab rau coding, Nws yog lub tswv yim zoo los pib nrog cov lus yooj yim uas koj tuaj yeem kawm tau, thiab tom qab ntawd nthuav los ntawm muaj. Nws tseem yog lub tswv yim zoo los pib nrog hom lus uas ua haujlwm nrog cov tsev qiv ntawv thiab kev ua haujlwm. Ntxiv thiab, Nws yog ib qho tseem ceeb kom xav txog yam project uas koj xav siv nrog cov lus.

Yog tias koj tshiab rau lub tswvyim ntawm web kev txhim kho, PHP yuav yog ib qho kev xaiv rau koj. Nws yooj yim mus pib nrog PHP. Cov lus muaj ntau cov ntawv thov thiab tuaj yeem pab ib tus programmer. Nws cov lus txhais tau meej thiab nyeem tau yooj yim, uas ua rau nws haum rau cov neeg pib. Nws yog qhov kev xaiv nrov rau lub web tsim tawm.

PHP kuj tseem nrawm dua li lwm yam lus programming. PHP 7.EX tau txhim kho cov kev ua ke thiab yog nce txog 2 x nrawm dua li nws tus neeg ua ntej. Nrog nws cov yam ntxwv tshiab zoo li Zend Cav 3.0, PHP yooj yim dua li puas tau. Ntxiv mus, Cov lus yog yooj yim los tshawb xyuas cov cai kom muaj dua lwm cov lus programming.

Thaum nws los txog rau lub cajmeem, PHP yog qhov kev xaiv nrov rau lub web tsim tawm. Nws yog qhov yooj yim kawm thiab siv, thiab nws hloov tau ntau dua li java. Nws tseem tso cai rau koj ua haujlwm nrog cov cai lij choj tsis txaus siab thiab dawb, uas yog cov txiaj ntsig zoo rau cov neeg tsim khoom. Tsis tas li ntawd, PHP yog qhib qhov chaw thiab khiav ntawm txhua lub platform.

Objektorientierte Programmiersprache

Object-Oriented Programming (OOP) yog ib txoj hauv kev rau kev pab cuam uas siv cov khoom raws li lub tsev thaiv ntawm ib txoj haujlwm. Hauv txoj kev no, Cov khoom txhais tau hais tias yog cov chaw uas muaj nyob hauv lub sijhawm. Cov chaw no tseem tuaj yeem muaj cov khoom thiab cuam tshuam nrog lwm cov khoom. Cov khoom txawv ntawm cov chav kawm, uas yog zoo li qub ntawm cov code uas yuav tsum tau ntsuas thiab nyob twj ywm zoo li qub. PHP siv cov hierarchy ntawm cov chav kawm, hu ua khoom, Txhawm rau npaj txoj haujlwm ua haujlwm.

Lub hom phiaj-taw qhia lub cajmeem hauv PHP ua rau nws rov siv tau yooj yim thiab tswj hwm. Cov ntsiab lus ntawm cov khoom-kev taw qhia feem ntau muaj txiaj ntsig hauv cov ntawv thov complex. PHP 5 muaj ob peb qhov zoo nyob dhau los ua cov hloov tshiab. Rau ib qho, Nws muab kev nkag tau zoo dua ntawm cov cwj pwm thiab cov khoom. Qhov no tso cai rau cov neeg tsim tawm los sau cov ntawv thov nyuaj dua hauv lub sijhawm tsawg.

PHP kuj muaj cov qauv zoo heev, uas tsis yog feem ntau hais los ntawm tus neeg siv tab sis hu ua los ntawm PHP thaum qee qhov xwm txheej tau ntsib. Cov hau kev no muaj npe nrog ob-understroke, Txawm hais tias nws yog qhov zoo tshaj plaws kom tsis txhob siv tus cwj pwm no thaum Naming Txoj Kev. Cov hau kev kuj tuaj yeem ua pawg ua pab pawg.

Hauv PHP, Cov chav kawm muaj cov yam ntxwv ntiag tug thiab pej xeem. Cov yam ntxwv ntiag tug yog qhov muaj kev nyab xeeb tshaj plaws. Cov yam ntxwv ntiag tug tau txais los ntawm cov tswv cuab ntawm chav kawm. Cov Khoom ntiag tug, xws li ib tug siv los tsim ib qho khoom, tsis yog pej xeem siv tau. Cov chav kawm tseem tuaj yeem siv pfeilootator -> Txhawm rau nkag mus lawv cov khoom thiab cov hau kev.

Lub hom phiaj-taw qhia cov programme tso cai rau cov neeg tsim tawm los ua qauv rau lub ntiaj teb ntawm cov khoom. Cov khoom no muaj cov ntaub ntawv thiab cov hau kev thiab tuaj yeem siv rau ntau cov ntawv thov. Cov chav kawm tau txhais rau cov khoom sib xws. Thaum ib chav kawm tau txhais, Cov khoom tuaj yeem ua ntau yam haujlwm thiab tau rov siv dua.

Lub hom phiaj-qhia lub cajmeem tso cai rau cov neeg tsim tawm los sau cov phiaj xwm uas siv cov ntaub ntawv khaws cia. Cov khoom kuj tseem yuav tsim thiab khaws cia tsis pub dhau cov ntaub ntawv PHP. Qhov no yog tau los ntawm kev siv arrays. Los ntawm kev siv arrays, Koj tuaj yeem khaws ntau qhov tseem ceeb ntawm ib zaug. Koj tseem tuaj yeem siv cov kev hais kom ua hu ua ECHO. Koj tuaj yeem muab tso rau ntau cov snippets ntawm cov lej rau hauv html uas twb muaj lawm.

Raws li lub npe qhia, Lub hom phiaj-qhia txog kev siv cov kev siv los tswj hwm cov ntaub ntawv ntws. Qhov no yog qhov sib txawv ntawm qhov sib txawv thiab ua haujlwm ua haujlwm. Thaum ob hom lus siv cov xwm txheej los tswj cov ntaub ntawv, Tus qauv ua haujlwm tau xav tau ntau qhov kev tshem tawm thiab hloov tau yooj yim. PHP tsim tawm tuaj yeem sau cov code uas ua haujlwm tau zoo rau lawv pab neeg thaum siv lub moj khaum dav dav.

Oop kuj siv cov tswvyim ntawm chav kawm, uas sawv cev rau qhov chaw siab tiag tiag. Ib qho khoom yog ib qho piv txwv ntawm chav kawm. Piv txwv li, ib tug neeg lub npe, hnub nyoog, tus xov tooj, thiab lwm cov ntaub ntawv tuaj yeem khaws cia hauv ib chav kawm. Ib qho khoom kuj tseem tuaj yeem muaj cov hau kev thiab qhov txiaj ntsig uas cia koj ua haujlwm ntawm nws.