PHP: lub xeem lub caij. Ib tug array ntawm puab

PHP - yog pheej thiab niaj hnub: ib tug zoo syntax thiab semantics ntawm muaj peev xwm ua dhau dab tsi yog tso cai. Ua raws li cov tswv yim ntawm yam khoom-taw qhia kom paub programming thiab cov kev ywj pheej ntawm kev hloov lub hom ntawm cov kuj tsis paub meej puas muaj tiag ntawm cov feem ntau daring u.

Arrays - ancient tsim, thiab associative - ib tug tribute lub sij hawm, ntau dua li ib qhov yuav tsum tau xyaum. Txawm hais tias muaj yog ib tug txaus tus naj npawb ntawm kev pab raws qib uas muaj lub creation ntawm cov ntaub ntawv teev tsis tau muab cov ntsiab lus (kom muaj nuj nqis, tus nqi, hom thiab cov lis dej num), uas yog muaj nyob rau ntawm saib thiab siv nyob rau hauv mus PHP foreach. Qhov kawg lub caij ntawm lub array yog muaj nyob rau ntawm txhua txoj kev ntawm creation. Array - li ib txwm associative thiab - cia koj rau tsim npe, tab sis nyob rau hauv lub li ib txwm syntax, PHP cov kev txwv kev siv.

Tam sim no tus nqi ntawm lub array

Yog hais tias koj tsis quav ntsej txog Performance index thiab siv tsim

$ ArData [] = tshiab scField (); // scNumber, scString, scParagraph, ...

qhov twg scField () - Constructor paub daws teeb khoom - "daim ntawm cov ntaub ntawv", uas muaj qub txeeg qub teg: tus xov tooj (scNumber), txoj hlua (scString), nqe lus (scParagraph), ... tau lub PHP: lub xeem caij = array ntawm cov khoom seeb nws cov khoom raws li ib tug lub sij caij.

Yeej tseem zoo, tsis muaj teeb meem dab tsi lub caij xam tau tias yog tseem ceeb, tab sis nyob rau hauv cov ntaub ntawv no nws yog tsim nyog los ua raws li cov pointer (nyob rau hauv PHP - cursor) tsis pub dhau lub array. Ntau zaus - yuav tsum muaj lawv tus kheej cell pointer. Yuav tsum nyob rau hauv ib tug cursor PHP lacks lub tswv yim ntawm "tiam kawg keeb = array". Qhov ntawm cov nuj nqi kawg () thiab array_pop (), qhov kawg lub caij li ib tug delegate mus rau lub zog array. Siv array_pop (), nyob rau hauv tas li ntawd, txiav keyboards mus rau lub yav dhau los array caij thiab nws cov khoom no hloov raws li. Qhov no yog tshwm sim los ntawm cov tau zog ntawm cov ntsiab.

Yog li, xav tias nyob rau hauv lub ntsiab lus teb ntawm PHP syntax, tshem tawm cov xeem caij nyob rau hauv lub array yeej txhais tau hais tias siv nws lub zog. Sequentially muab thiab tshem tawm cov ntsiab, peb muab dynamic zog, lub tshiab dynamic qauv ntaub ntawv no, tsim nyob rau hauv lub muaj syntax.

Keeb kwm thiab lwm yam hais

Nws muaj ib tug muaj nuj nqi mus ua hauj lwm nrog tus thawj lub caij ntawm lub array thiab tsiv mus nyob rau sab hauv pointer. Nyob rau hauv ib txwm syntax uas siv cov classic xyaum ntawm programming, lawv muaj feem xyuam. Nrog kev xav txog kev tsim arrays nrog dynamically hloov kev txiav txim zoo - tsis muaj.

Nyob rau hauv lub cajmeem, nws yog ib txwm ib lo lus nug ntawm kev txiav txim siab: variables yog cov tej yam kev mob lub teb xov tooj yuav hloov lub chav kawm ntawm lub algorithm, loops ib yam dab tsi tsom xam, nws thiaj li ua tau.

Yog hais tias koj tsiv mus rau qhov chaw ntawm lub ntiajteb txawj nqus mus rau lub sij yam khoom thiab muab nws nws tus kheej kev txiav txim siab, qhov kev pab cuam yuav siv sij hawm nyob rau hauv ib yam nkaus, muaj nuj nqis zoo. Feem ntau cov feem ntau nws yog ib qhov qauv tso cai rau kom cuag lub hom phiaj, tshwj xeeb tshaj yog thaum nws tawm los rau, piv txwv li, siv ntawm ntau yam ntaub ntawv cim npe * .docx sau cia rau hauv tus txheej txheem qhib XML.

Nyob rau hauv PHP tau kawg lub caij nyob rau hauv lub array - nws ib tug tshiab lub ntsiab lus thiab ib tug zoo lub sij hawm.

Daus ntaub ntawv thiab dynamic thaj chaw ntawm arrays

Thaum lub site muaj cov muaj peev xwm mus download tau ib yam ntawm cov ntaub ntawv, nws yog yooj yim siv lub tswv yim ntawm ib tug paub daws teeb khoom, piv txwv li, SCFile thiab xeeb leej xeeb ntxwv los ntawm nws scImage, scDocument, scTabe, uas yuav muaj tib lub npe zog, tab sis ntau lawv cov tsos thiab cov ntsiab lus (cov ntsiab lus). Nyob rau hauv lub ntsiab lus teb ntawm lub PHP syntax (lub xeem caij = array), siv kawg () muaj nuj nqi, koj yuav tau siv nws txoj kev nws txiav txim kawg lub caij. Qhov kev txiav txim yog nthuav nyob rau hauv uas nws reverses cov ib txwm kev nthuav qhia thiab tso cai rau koj mus next cov ntaub ntawv qauv raws li nws tau tsim.

Tej kev siv cov arrays muab lawv ib tug kiag li lub ntsiab lus tshiab. Nws muab PHP syntax, tab sis xws siv muaj zoo txuj.

Muab duab, cia nyob rau hauv ib tug database, rov qab nyob rau hauv kev khiav hauj lwm mob (piv txwv li) nws yuav ua tau tsis yuav tau xav txog yuav ua li cas nyob rau hauv ib tug cov ntaub ntawv. Tag nrho uploaded ntaub ntawv no tso rau hauv lub array sequentially, thiab thaum twg nws yog tiav, yog yeej ib txwm hu ua lub tib txoj kev rau tib lub tswvyim, tab sis cov duab cov ntaub ntawv yuav muab tso tawm kom raws li yog, lub spreadsheet cov ntaub ntawv - raws li ib lub rooj, thiab cov ntaub ntawv - cov coj cov ntawv nyeem. Nyob rau ntawm lub PHP syntax ntawm lub xeem caij ntawm lub array yog equipping nws tus kheej lub zog thiab tej ntsiab lus.

Nyob rau hauv lub caij nyoog kawg no cov ntaub ntawv, cov ntaub ntawv no yog ib txwm cim, cov hlua, cov xov tooj, thiab, tseem ceeb tshaj, formatting. Khaws khiav ntawm txhua lub caij yog ib qhov nyuaj, tab sis los ntawm kev muab cov kwv rau txhua hom caij yuav tsum tau, tsis muaj hesitation, daim ntawv raws li nws yog.

Tshooj thiab recursion hauv syntax

Thaum peb ua hauj lwm tsuas nrog rau lub xeem lub caij, lub ntsiab mob - ib pawg, tab sis thaum cov khoom no yog tua, thiab nws siv tib yam kev tsim kho, thiab tshwj xeeb tshaj yog nws tus kheej - yog recursion. Peb yuav hais ntau yam zoo yam uas hais txog cov tsev qiv ntawv PHPOffice, xws PHPWord, tab sis sib cav hais tias lawv twb paub lawm full-fledged mechanism uas translates cov thawj formatting ntawm daim ntawv nyob rau hauv cov kev tshwm sim, koj yuav tsis tau.

Tseeb, siv PHPOffice \ PHPWord yuav ces yuav yooj yim qhib tej vordovsky ntawv (* .docx), tab sis yog nws tsuas archive ntau structured xml-cov ntaub ntawv, cov duab, thiab lwm yam khoom.

Nyob rau tib lub sij hawm, yog hais tias peb noj xwb lub xml-cov ntaub ntawv, txawm hais tias lawv yog hais txog (nyob rau hauv cov nqe lus ntawm yeej, tables, duab), yuav tsis ua hauj lwm tsim ib tug tshiab daim ntawv raws li nyob rau hauv cov laus thiab cia li tsiv mus rau nws qhov kev kawm cov kev hloov (piv txwv li, hloov cov font xim, hom). Options mus thov cim npe Qhib XML teeb, thiab txawm lub thiaj li tsim cov khoom zoo li MS Word, tsis yeej ib txwm tiv nrog tus neeg siv lub tswv yim, ua yuam kev.

Ua tau * .docx ntaub ntawv - ib tug zauv teb-archive, thiab meej thiab to taub cov qauv. Siv ib tug me me muaj pes tsawg tus ntawm cov khoom yuav thawm xyoo piav nws thiab tau thaum lub sij hawm ntawm kev nyeem ntawv ib tug tag nrho, ywj siab cov ntaub ntawv qauv, uas yuav tsum tau tswj semantically.

Nyob rau hauv cov ntaub ntawv no, cov ntaub ntawv nyob rau hauv cov ntaub ntawv - cov formal qauv ntaub ntawv no. Muab nws ib tug qauv, koj yuav tau yooj yim mus rau cov theem ntawm lub ntsiab lus thiab las mees lub syntax.