Zviratidzo pamusoro PHP: tambo kuti nhamba ndiEzekieri

Information nguva dzose ndiwo chiratidzo. Chete kana paiva zvirongwa, yakava rutivi tsamba, nhamba nezviratidzo (mu wevakadzidza mupfungwa).

Kusvikira imwe nguva kupfuura mukurumbira anotaurwa mutauro, akaita zvake zviratidzo, kushandisa dzimwe nhengo dzomuviri uye mabasa ounyanzvi zvikuru. Zvakakosha kuti zvose zvakasiyana izvi zvakasikwa mufananidzo mashoko kubva kumuduku kusvikira yakakura inogona nguva dzose kurondedzerwa nemashoko, ndiko kuti anowanisa-software kubudiswa muna imwe pfungwa kana mumwe.

Akaya uye nhamba

Line - ndiko, kupfuura zvose, kuva akasiyana siyana vatambi. In siyana zvirongwa maturusi fractional chikamu vaparadzana wose yakasiyana. Vamwe nzvimbo pfungwa dzimwe koma (rinoreva "." Munguva PHP mutsetse kutendeuka pauwandu). Vanamwari vatatu vatatu vakaparadzana kuroorwa apositurofi, koma kana nzvimbo. Real nhamba akanyorwa tsamba "E".

chokungoitawo All izvi. Masvomhu uye nenheyo kushanda chero processor vaziva kuwanda hapana-frills, uye kushanda pamwe chaiko tsika yacho unoenderana mamwe processors kunge yakatanga.

Asi nyika yose variables imwe mhando (nokuti zvirongwa yaitonga) uye Kuzadziswa ano pfungwa nokubvumirana pakubhadhara ose mashoko zvinoreva PHP kutendeutsa tambo kuva nhamba kuti vachiri kuita chinhu. The yakanakisisa PHP «cheka», kana pane, kuti 0 kana kana chepakutanga tambo ine pane imwe digit. nhamba dzose kune wokutanga vasiri Numeric mabhii anoumba nhamba iyi.

Total kutendeuka utongi

In PHP mutsetse nhamba kutendeuka, kana programmer asina zvimwe kwaitika pamusoro kushanda. Kana shanduka rine chete digits uye pfungwa, rinogona kuwanikwa nhamba chaiyo. Kana kutevedzana nhamba kusangana koma, ipapo zvose anouya pamberi payo, chichange sokureva nhamba Chokwadi, rose.

Chero vasiri Numeric hunhu ari digit kutevedzana chinomisa muitiro, uye PHP kutendeuka mugumisiro "musara iri nhamba" ndiro chete ukoshi yakatangwa kutangira asiri digit hunhu.

Masvomhu uye unhu kugadzira

Chii chakaoma, kutanga kana wechipiri, kunyange zvokuimba chinzvimbo kuti usingakwani muchikwata papeji, hunoshamisa matrices, calculators, kukanganisika uyo dzimwe nguva anogona kunyange vanyori zvinobva integrals, differentials ose integrals uye polynomials vari N-chizvarwa, kutaura chaizvo anongoti: Society Hapana mubvunzo anokudza nebudiriro masvomhu uye mathematicians, asi nokurera kunokosha kupfuura hunhu, zvikuru kunzwisisa uye anofukidza masvomhu, sezvinoita duvet, kupa kuziva, havagoni kuenda mhiri vaiita nhamba, yakanaka zvakatipoteredza okugadzira zvinhu.

Kazhinji, PHP tambo kwenhamba vatendeuka rwoga, asi hazvina zvichirwadza kutarisa kunze. Zvakanakisisa nguva dzose kuva nechokwadi: PHP anonzwisisa kuti mumwe kana mumwe shanduka - nhamba iyoyo. Kana paine mubvunzo, unofanira kutaridzwa mhando imwe shanduka zvakajeka (Int) kana (ichiyangarara) pamberi kukosha uye ona kuti PHP anonzwisisa mhando imwe shanduka is_integer () kana is_float ().

Trends mapurogiramu ano

The klassiske kududzirwa dambudziko iri PHP "mumutsara nhamba" riri mukati pfungwa mapurogiramu ano. The neizvi muitiro zvakawanda siyana dzomutauro. Mabasa number_format (), printf (), sprintf () anogona kushanda zvishamiso, kwete chete panguva imwe chete nhamba, asi nhamba boka.

атематика и численные вычисления - это не наш конек. Unoponesa kuti PHP "mutsetse kwenhamba" zvinoratidzwa, asi, kuti, uye anogona, asi M atematika uye kusanganiswa kukarukureta - hakusi kwedu simba pfungwa.

Nyora kwaye uye yakavimbika functionality kuti zvokurimisa imwe kubudiswa nhamba PHP, hapana dambudziko, uye tichava chinhu kupfuura mugumisiro mumwe mutauro akarongeka. PHP - ndiko, pakutanga kwezvose, ku-server, mutauro Uropi kusanganisira kwemasvomhu zvisikwa.