Qhov txawv ntawm PHP Developers thiab PHP Entwicklers

PHP yog ib hom lus scripting uas niaj hnub nyob rau hauv lub xeev ntawm evolution thiab yog siv los ua ntau yam hauj lwm.. PHP developers tsim complex databases thiab web applications. Lawv feem ntau yog ua haujlwm hauv cov ntsiab lus tswj cov txheej txheem, Guestbookers, thiab forums. Lawv feem ntau xaus rau kev tsim cov ntsiab lus dynamic. Yog xav paub ntxiv txog PHP, nyeem ntxiv! Kab lus no tshawb txog qhov sib txawv ntawm cov neeg tsim khoom thiab PHP tsim tawm. Pib, xav txog koj lub luag haujlwm ua tus tsim tawm.

Cov ntaub ntawv hauv PHP cov ntaub ntawv

Raws li tus tsim tawm PHP, Tej zaum koj yuav nquag teeb headers. Cov headers no muab koj cov ntaub ntawv server. UTF8 cov ntaub ntawv kuj muaj a “Byte Order Mark,” lub BOM. Muab headers ua ntej ua rau blod, yog li tshem BOM los ntawm koj cov ntaub ntawv yog ib lub tswv yim zoo. Yog xav paub ntxiv, saib Setting Headers hauv PHP. Nov yog ob peb yam uas ua rau ntshav ua rau yuam kev:

File_get_contents(): Siv cov haujlwm no los khaws cov ntsiab lus ntawm a.txt cov ntaub ntawv. Txoj kev no kuj yuav tsum muaj 'cov ntaub ntawv tuav’ thiab 'text’ parameter. Cov ntaub ntawv yuav tsum sau tau. Qhov 'sau’ tus nqi qhia txog kev ua haujlwm ntawm tus lej ntawm bytes hauv cov ntaub ntawv. Yog tias kev ua haujlwm tsis ua haujlwm, fwrite() rov cuav. Txawm li cas los, qhov no yog qhov tseem ceeb PHP ua haujlwm.

Ntawm cov npe nrov tshaj plaws PHP-based applications, e-lag luam thiab kev txhim kho lub vev xaib yog ob qho piv txwv. Cov lus PHP tau siv dav hauv kev lag luam online thiab ntawm tus kheej lub computer. Muaj ntau qhov zoo rau kev siv nws, suav nrog nws qhov yooj yim ntawm kev siv thiab nws tus nqi qis. Tus neeg txhais lus PHP tso cai rau koj los tsim cov ntaub ntawv ntawm ntau hom thiab xa mus rau lub webserver. Tsis zoo li lwm yam lus sau, PHP yog dawb thiab qhib qhov chaw. Paub txog cov hauv paus ntawm PHP yog qhov tseem ceeb thaum qhia koj tus kheej rau IT-Recruiters.

PHP program yuav khiav ntawm cov vev xaib nrov tshaj plaws. Scripting language PHP yog siv los tsim cov vev xaib dynamic thiab web applications. PHP muaj nws lub hauv paus pib thaum ntxov nineties thiab tam sim no muab faib raws li PHP-daim ntawv tso cai. PHP-code yog ib hom lus scripting uas khiav hauv computers siv ntau yam kev khiav hauj lwm systems thiab databases. Raws li nws yog lub web server-tsav lus, PHP's extension modules tso cai rau koj los tsim cov ntawv thov web ntawm tus nqi qis heev.

Kev ua haujlwm ntawm PHP cov ntaub ntawv

Koj tuaj yeem suav nrog PHP-Dateien hauv koj tus lej PHP los ntawm kev siv cov syntax 'xws li’ los yog xav tau'. Hauv PHP, ob lo lus no txhais ib yam nkaus – suav nrog lossis xav tau. PHP muaj nws cov txheej txheem ua haujlwm uas tseem ceeb rau kev ua haujlwm. Nov yog qee qhov ntawm lawv:

khi() thiab bind_once yog ob txoj haujlwm uas tso cai rau koj los khi cov ntaub ntawv rau qee qhov chaw nyob ntawm lub server ua ntej xa mus rau tus qhua. Txawm li cas los, koj yuav tsum tsuas yog siv cov haujlwm no yog tias koj paub tseeb tias lub npe PHP-cov ntaub ntawv yeej ib txwm zoo ib yam. Sonderzeichen lossis lwm cov cim yuav tsis nyeem tau. Koj yuav tsum tau ua kom paub tseeb tias koj qhov PHP-Programm tsis dhau qhov txwv vim tias nws yuav xaus.

Lub file_put_contents muaj nuj nqi tuaj yeem siv los nyeem lossis sau cov ntaub ntawv rau hauv cov ntaub ntawv. Txoj haujlwm no lees txais ib txoj hlua, npe file, thiab charset thiab tsim cov ntaub ntawv tshiab.txt. Cov ntaub ntawv loj() yuav rov qab tus lej ntawm bytes hauv ib cov ntaub ntawv. Nws kuj tseem siv tau los nyeem lossis sau cov ntaub ntawv. Nws tuaj yeem siv los nyeem thiab sau cov ntaub ntawv, los yog nws tuaj yeem siv los tsim cov ntaub ntawv.

Dhau li ntawm qhov chaws nyob hauv PHP cov ntaub ntawv, koj tuaj yeem siv qhov tshwj xeeb txuas ntxiv ntxiv rau kev ua haujlwm. Tsis zoo li cov lus niaj hnub, PHP-tag ua haujlwm tso cai rau koj ntxiv lossis tshem tawm HTML cim npe, li no hloov cov ntsiab lus. Qhov no tuaj yeem ua rau nws yooj yim dua los siv extensions, zoo li jQuery. Xwb, koj tuaj yeem siv qhov txuas ntxiv rau jQuery. Yog tias koj xaiv qhov kev xaiv tom kawg, koj yuav tsum paub tseeb tias koj muaj ib tug version ntawm PHP.

Kev ua haujlwm ntawm PHP program

Ntau yam kev ua haujlwm tuaj yeem ua tau hauv PHP cov haujlwm. Hauv PHP 5, txoj haujlwm no tau qhia. PHP kuj txhawb Object-Oriented Programming. Yam khoom tsis yog khoom tiag, tab sis xa mus rau cov hloov pauv thiab cov neeg ua haujlwm. Qhov tshwj xeeb no tso cai rau cov neeg tsim khoom tsim cov khoom siv uas tuaj yeem siv los ua ntau yam haujlwm. PHP txhawb Object-Oriented Data Access (PDO).

Raws li feem ntau siv cov lus programming, PHP yog nrov heev nyob rau hauv lub ntiaj teb no. Nws tuaj yeem siv los tsim cov ntawv thov raws li desktop thiab daim ntawv thov web nrog cov neeg siv graphical interface. PHP kuj tseem txhawb nqa kev txhim kho cross-platform. Qhov no txhais tau tias nws tuaj yeem siv los tsim cov ntawv thov thoob plaws ntau lub platform. Qhov no yog qhov tshwj xeeb tshaj yog muaj txiaj ntsig rau cov neeg ua haujlwm ntawm qhov project uas cuam tshuam nrog kev txhim kho mobile. Nws yooj yim thiab extensibility ua rau nws yog ib qho kev xaiv zoo heev rau kev lag luam kev siv.

PHP-Cov Kev Pabcuam siv cov khoom khib nyiab tshem tawm cov khoom uas tsis tas yuav tsum tau ua. Cov khib nyiab khib nyiab no yog qhov yooj yim heev uas ua kom yooj yim programming thiab tiv thaiv cov khoom los ntawm kev khaws cia thiab siv yam tsis tsim nyog.. PHP kuj suav nrog cache feature, uas txuag cov khoom siv es tsis pub nws ploj. Siv lub cache yog ib txoj hauv kev zoo los ua kom cov kev ua tau zoo ntawm koj li PHP-kev pab cuam thiab tiv thaiv cov ntaub ntawv poob.

Ntxiv nrog rau qhov nrov rau nws versatility, PHP muaj kev ua haujlwm zoo rau cov tswv lub vev xaib. Los ntawm kev nthuav tawm cov ntsiab lus ntawm nplooj ntawv web mus rau kev txheeb xyuas cov ntaub ntawv, PHP yog ib hom lus siv tau zoo thiab muaj ntau yam lus uas tau nrov dua. Nws yooj yim syntax thiab kev ua haujlwm zoo ua rau nws yog qhov kev xaiv zoo tshaj plaws rau cov neeg tsim tawm lub vev xaib. Nws yog ib qho yooj yim-rau-siv server-sab programming lus uas tau dav siv rau automatization thiab web applications.

Qhov sib txawv ntawm cov neeg tsim khoom thiab cov tsim tawm

Qhov sib txawv ntawm PHP tus tsim tawm thiab tus tsim tawm lub vev xaib tsis zoo li ib qho yuav xav. PHP muaj ntau cov ntsiab lus zoo thiab nuances thiab xav kom cov neeg tsim khoom hloov pauv tau thiab ntau yam hauv lawv txoj haujlwm. Muaj ntau qhov zoo rau PHP kev txhim kho thiab nws lub peev xwm los ua haujlwm ntawm ntau lub platform. Txawm li cas los, tus tsim tawm yuav tsum muaj qee yam kev txawj ntse thiab kev paub dhau los kom ua tiav hauv txoj haujlwm no. Hauv tsab xov xwm no, peb yuav saib qee qhov sib txawv ntawm PHP tus tsim tawm thiab tus tsim tawm.

Developers thiab web designers siv cov lus programming nrov los tsim web applications. Ntawm cov lus no yog Java, C#, SOAP, JSON, thiab lwm tus. Cov kws tshuaj ntsuam nruab nrab kuj tseem tswj hwm cov ntaub ntawv thaub qab thiab tswj cov tshuab thiab cov ntaub ntawv. Qhov sib txawv ntawm tus tsim tawm thiab tus tsim lub vev xaib tsis yog hauv cov lus xwb, tab sis kuj nyob rau hauv kev txawj ntse thiab kev paub ntawm cov neeg tsim khoom. PHP tus tsim tawm feem ntau yuav paub txog tag nrho cov saum toj no.

PHP yog Ameslikas tsim rau kev txhim kho lub vev xaib thiab kev siv web. Cov lus tuaj yeem ua txhua yam uas CGI program ua tau, suav nrog cov ncuav qab zib, dynamic nplooj ntawv, thiab ntau dua. Qhov kev siv ib txwm siv ntawm PHP yog qhov twg cov cai tsim nyob rau hauv webserver, thiab tsis pom los ntawm browser. PHP entwickler lossis tus tsim tawm feem ntau yuav yog tus tsim lub vev xaib, tab sis tus tsim tawm PHP yuav tau tsim lawv cov txuj ci hauv cheeb tsam no tau ntau xyoo. Qhov tseeb, raws li W3Techs, 78.3 feem pua ​​​​ntawm cov vev xaib nyob siv cov lus server-sab programming. Ntxiv mus, 8 tawm ntawm 10 cov vev xaib siv PHP hauv qee hom.

Tus nqi rau php developer

Muaj ntau txoj kev xaiv muaj rau koj thaum koj xav tau tus tsim PHP. Koj tuaj yeem ntiav ib tus neeg ua haujlwm ywj pheej lossis lub tuam txhab ntiav koj. Cov neeg tsim tawm ywj pheej tsis tas yuav ua haujlwm los ntawm lub tuam txhab, thiab koj tuaj yeem ntiav lawv tsuas yog thaum koj xav tau. Cov neeg ua haujlwm ywj pheej kuj tau them tsawg dua cov neeg ua haujlwm hauv tuam txhab, thiab koj tuaj yeem ntiav lawv thaum twg koj xav tau. Yog tias koj tab tom nrhiav rau PHP tus tsim tawm ntawm daim ntawv cog lus, koj yuav tsum paub ntau npaum li cas koj txaus siab them.

PHP developers tuaj yeem ua txhua qhov chaw los ntawm $15 ib teev rau $80 ib teev. Lawv muaj kev paub ntau dua, siab dua lawv cov nqi yuav. Xwb, yog tias koj ntiav tus tsim tawm rau qhov project ntev, koj tuaj yeem xav ntiav ib tus neeg sab nraud Asmeskas. Hauv cov xwm txheej no, koj tuaj yeem cia siab tias yuav them tsawg dua qhov koj yuav them tus neeg tsim khoom Asmeskas. Cov nqi kuj yuav qis dua. Koj yuav tsum xav txog koj qhov chaw nyob thaum nrhiav PHP tus tsim tawm.

PHP lus muaj ntau cov ntsiab lus zoo thiab nuances. Kev ntiav tus neeg tsim khoom uas muaj kev txawj ntse tshwj xeeb tuaj yeem pab koj kom tsis txhob ntiav tus tsim tawm nruab nrab. PHP cov neeg tsim khoom yuav tsum ua kom yooj yim nrog ntau hom kev ua haujlwm, suav nrog lawv cov neeg siv khoom. Lawv kuj yuav tsum muaj kev cob qhia tshwj xeeb, tshwj tsis yog lawv ua haujlwm ntawm qhov project uas tsis xav tau PHP. Thiab PHP developers yuav tsum muaj kev txawj ntse. Yog tias koj xav tau tus tsim tawm PHP, tsis txhob yig tiv tauj Kab laug sab India. Pab neeg ntawm cov kws tshaj lij yuav tau txais txoj haujlwm sai thiab ua tau zoo.

Vim li cas thiaj xaiv php developer?

Vim li cas koj thiaj yuav tsum ntiav PHP tus tsim tawm rau koj lub vev xaib tshiab? Tom qab tag nrho, cov txheej txheem ntawm kev tsim koj lub vev xaib cuam tshuam nrog ntau yam kev ua haujlwm. Koj tsis xav them cov hmoov zoo tsuas yog rau tus tsim lub vev xaib los txhim kho qhov yooj yim, lub website tsis muaj teeb meem – koj xav tau txoj haujlwm tiav. Tab sis muaj ob peb yam zoo los nrhiav kom ntseeg tau tias koj tau txais tus tsim lub vev xaib zoo tshaj plaws rau txoj haujlwm.

Ua ntej, PHP-developers yog cov kws tshaj lij ntawm kev tsim lub vev xaib dynamic. Lawv yuav tsum paub ua haujlwm hauv pab pawg thiab tsim cov vev xaib tshiab. Lawv cov txuj ci yuav tsum suav nrog HTML thiab JavaScript. Lawv kuj yuav tsum paub txog kev txhim kho niaj hnub no. Yog tias koj muaj keeb kwm technical, koj yuav tsum tau nyeem PHP-library thiab nkag siab cov lus. Thaum kawg, PHP-developers yuav tsum muaj peev xwm hloov mus rau txhua qhov kev hloov pauv tsim, yog li lawv yuav tsum muaj peev xwm ua haujlwm tau zoo nrog lwm cov thev naus laus zis.

PHP tau dav siv los ntawm cov neeg tsim khoom hauv web rau ntau yam kev siv. Thaum lawv feem ntau sau software thiab code, nws yog server-sab nta ntawm PHP uas ua rau nws nrov heev. PHP cov neeg tsim khoom tuaj yeem ua rau cov vev xaib ua haujlwm nrog ntau hom vev xaib thiab txawm tias sib koom ua ke rau hauv ib leeg. Ntxiv rau, PHP cov neeg tsim khoom tuaj yeem tsim cov ntawv thov web rau cov tuam txhab thiab cov koom haum tsis muaj txiaj ntsig. Qhov no ua rau nws muaj peev xwm ua tau rau cov lag luam los siv cov cuab yeej no rau ntau lub hom phiaj.