Isimboli kwi PHP: umtya libelinani and vice versa

Ingcaciso ngamaxesha onke ngumfanekiso. Kuphela xa kukho iinkqubo, yaba yinxalenye oonobumba, amanani kunye nemiqondiso (ngengqiqo olusesikweni).

Ukuya ixesha elithile Ulwimi oluthethwayo ezithandwa kakhulu, wenza imiqondiso yakhe, izijekulo imisebenzi yobugcisa ngokukodwa. Kubalulekile ukuba zonke ezi ezahlukeneyo ukumelwa bendalo ulwazi amancinci ukuya enkulu kusoloko kuchazwa amagama, oko kukuthi ukuba enze kufumaneke processing software ngenye ingqiqo okanye omnye.

Intambo kunye nenombolo

Line - kukuthi, ngaphezu kwabo bonke, uluhlu weempawu ezahlukeneyo. Xa izixhobo ezahlukeneyo iinkqubo inxalenye iqhezu bahlukana evela yonke ezahlukeneyo. Ezinye ikhethwayo ngongoma enye isiphumlisi (iindlela "." Xa ukuguqulwa umgca PHP i ngenani). Triad bahlukana eyodwa isimeli, ikoma okanye indawo. amanani Real obhalwe unobumba "E".

Zonke ezi okusemthethweni. Mathematics kunye nemigaqo yokusebenza nawuphi kumqhubekekisi ebesoloko eyiqonda inani no-frills, nisebenze ngezenu ziphuhlisiwe amaxabiso yokwenene nelayo i iziqhubekisi ezongezelelweyo.

Kodwa ihlabathi yezahlukileyo sohlobo oluthile (kuba iinkqubo era) kunye nokufezekisa ingcamango mihla kwisivumelwano zonke iindidi zedata kuthetha kwi PHP ukuguqula umtya ibe inani basaqhuba nto. The best PHP «kunqunyulwa», okanye mandithi, ukuze senze u-0 okanye ukuba umtya yokuqala iqulethe digit ubuncinane enye. Onke amanani ukuya kwi oonobumba bokuqala non-yamanani babumba eli nani.

Total conversion rule

Xa PHP nenombolo ukuguqulwa umgca, ukuba wenkqubo akanawo ngenye kwenzeka ngokuzenzekelayo xa isicelo. Ukuba variable iqulethe amanani kuphela nencopho, luyafumaneka na inani lokwenyani. Ukuba amanani ngokulandelelana ukuya kudibana ikoma, ngoko yonke into eza phambi kwayo, uya ukuchazwa njengenani, Kakade ke, lonke.

Umsebenzisi non-amanani ngokulandelelana digit lo kunqanda inkqubo, kunye PHP ukuguqulwa japan 'umqolo kule inani "nguye kuphela ixabiso elalisekwe phambi kokuba uphawu olunga-yokuqala.

processing Mathematics nesimilo

Yintoni nzima ngakumbi, kuqala okanye yesibini, nkqu kunye neefomula kwezithuba ezingangeniyo kwiphepha, matrices yayintle, iigrafu, ukusombulula intsinda-badala ngubani maxa wambi nkqu ababhali ezivela integrals, ukohluka of integrals kunye polynomials kwi n-sizukulwana, ukuba bathi kakhulu nje: Society ngokuqinisekileyo ihlonipha impumelelo zemathematika zezibalo, kodwa yokuphatha ibaluleke ngaphezu umlinganiswa, ezinokuntsonkotha iquka izibalo, njenge duvet, enika ingqondo imibuzo, abanako andingekhe ndiwugqithe inani ngomlingo, indawo evumayo amathuba okuziphucula.

Ngokuqhelekileyo, umtya PHP inani eziguqulelwe ngokuzenzekelayo, kodwa ayisoze uwuqwalasele phandle. Kungcono ukuba kusoloko ezithile: PHP uyaqonda ukuba enye okanye omnye umahluko - elo nani. Ukuba kukho nayiphi na intandabuzo, kufuneka ucacise uhlobo variable ngokucacileyo (int) okanye (edadayo) phambi kokuba ixabiso kwaye ubone indlela PHP uyayiqonda uhlobo a is_integer variable () okanye is_float ().

Imizila iinkqubo zale mihla

Ukutolikwa ezaziwa ingxaki kwi-PHP "ngenani umgca" phakathi iingqiqo iinkqubo zale mihla. Le nkqubo reverse kakhulu Ukrainian lunee ntlobo ezahlukeneyo ngakumbi. Imisebenzi number_format (), printf (), sprintf () unako ukusebenza ebalulekileyo, hayi kuphela nenombolo eyodwa, kodwa amanani qela.

атематика и численные вычисления - это не наш конек. Ukuguqulela kwi PHP i "ilayini inani" ibonisa, kunoko, ukuba, kwaye kungenza, kodwa m atematika nokubalwa lwamanani - akukho ingongoma lwethu.

Bhala ukusebenza endilisekileyo kunye enokuthenjwa liphumeza processing ethile kwamanani PHP, akukho ngxaki, yaye oko kuya kuba yinto ngaphezu kwesiphumo ulwimi zezibalo. PHP - kukuthi, kuqala kwiinto zonke, umncedisi, ulwazi processing ulwimi, kuquka nemvelo zezibalo.