PHP hangä: hanga tauira piha haapiiraa

Ko te whakaaro o te hōtaka ahanoa-hāngai ko nui whānui taea PHP no o tona pū, engari ara i roto i te whakatinanatanga o nāianei homai reira te kaihātepe taea mutunga. PHP hoahoa hangä - he tikanga motuhake o te piha haapiiraa (ahanoa) huaina e ko ia wa i hanga te tauira te.

WHAKAWHĀITITANGA Ko e te mahi PHP i te wa o te whārangi. I te wa ka he taanga manawa te whārangi ranei utaina tetahi whārangi i runga i te pae taua, i hanga ano nga taonga pūnaha e hiahiatia ana i te wahanga.

Te hanga i te tauira

e kore te Class Whakamārama hiahiatia ki te whai i te hanganga. Ki te hiahia koe ki te faaineine i te uara tuatahi o ngā taurangi, ki te hopu i te kau o te hanga i te tauira o te piha haapiiraa (ahanoa) ki te mahi i etahi mahi i runga i ētahi atu taonga, e kore e taea e koe te whakamahi i te piha PHP hangä wetereo, me te tuhituhi i te waehere e tika ana i waho i te tikanga o te piha haapiiraa.

E ai ki te arorau o kāhua hōtaka ahanoa-hāngai, kia whai te piha ia te hanganga e kia tīmata ake i te waitara rākau piha haapiiraa (tino kau) tupuna. Tenei o tuaukiuki o te mua, pai atu i te mahi tika.

A, no te haamata tuatapaparaa tupuna piha nui, e kua ona raraunga ake, me ngā āhuatanga e pā ana ki te raraunga o waho (ahanoa) kahore mahi hanga he mahuinga PHP.

I roto i tenei tauira, ka karanga te mahi (hanganga) te ki te waihanga (PHP hangä) te rā o te tauira o te piha haapiiraa. He he ingoa motuhake, me te te karanga a __construct mīhini kotahi anake, ka hanga te tauira o te piha haapiiraa te.

whakarato ana tēnei piha haapiiraa te pateko $ iUniqueNo tāupe, e i roto i nga kape o tenei piha ka whai i te uara ahurei. Wā o ngā akomanga tetahi mea i roto i te noa anake mo te whakaahuatanga i roto i te anga PHP me te wetereo whakaratohia e te kaiwhakawhanake o ratou tikanga pāhekoheko i.

arorau arawhiti tupu

Me whakatinana ia ahanoa ona whakaaro, ki te whai te mea kia ia, a ka mahi i te mea whai ahau ki. Ki te ai he taua arawhiti tirohanga whaitake i ia tupuna taumata ngā arawhiti o ia tupuna, ka karanga uri te taumata.

I roto i tenei tauira, ka taea te kupu matua ki a koe te karanga hanganga matua :: matua ki te taumata o te tamaiti. Ko te kuware Semantics. Tuatahi, ko te ki te mahi i tona tipuna arawhiti, na te tauira o nāianei. whai ana te tuatahi ona ake arorau, te tuarua - i tona ake.

A, no te mahi ia ahanoa e i roto i te mahi, he tika, me te mārama i te tukanga whānui. Ko tenei kia kore e te tikanga i titiro rite te täkupu mō ngā pūnaha whakaurunga katoa.

ahanoa pūnaha tuatapaparaa tupuna "kai" i roto i te āwhiwhitanga tuatahi kia whai i te tahi mea i roto i te noa, engari ko nga hua waiu, merengi, rimurapa me pata ahakoa no ratou ki te pūnaha taua, engari titiro ratou, ka e whakaahuatia rawa rerekē.

Me hanga Developer ia ahanoa i runga i te pūnaha tono, a kahore i runga i te āhua o te mea kotahi te whakaaro te tangata. He ahurei ia raruraru, ko reira he whakaritenga ki te whakamahi i runga i PHP hangä mātua - e kore e pūmau.

constructors Public me tūmataiti

He noa a wātea mō te whakamahi i uri katoa te hanganga taunoa. E kore tika tohu hangä mahi tūmatanui, i te taunoa, akono PHP whakaahuatia katoa rite noa.

Pehea hanga reira tikanga ki te whakamahi i te kupu matua tūmataiti i roto i te whakaahuatanga o te kaihoahoa - te pū o te raruraru, he āhuatanga o te tukanga o te whanaketanga kaihātepe ranei manakohanga?

Mai i te wāhi ariā o ngā tirohanga tuatapaparaa tupuna kia tukua tetahi here ki te faatura ki o ratou tupuna ki uri, engari te nui o te mea he pakeke ki te mea he arorau whaitake, ahakoa, i roto i te horopaki whānui.

ora ahanoa

Ko te ariā o te ahanoa-hāngai hōtaka PHP hangä piha whai wāhitanga whānui mo te take ohie e te tīariari anake te whakamutunga i te wa o te whārangi, anō-whakapumautia reira te hanga i tētahi atu whārangi ranei.

Whai wāhitanga mā JavaScript AJAX pūtirotiro me te waehere tika i runga i te tūmau e taea te āwhina ki te roa te ora o ngā, engari i roto i tetahi puka ka waiho reira iti kāhua.

whakarato PHP te kaha ki te whakahaere i te hōtuhi i runga i te tūmau, ka te kiritaki ko "momotu" me "farii i" te kiritaki hoki ki te hōtuhi rere ratou i mua, otiia e kore te mea he kōwhiringa, ka whakatinana te hōtaka ahanoa-hāngai te i roto i te C ++ tenei.

I roto i te take whakamutunga, ka taea e koe te hanga i te pūnaha oti o ngā e ka "ake", rite te hōtaka ko ake, me te rere. Heoi, i te reira anake e taea whakamanamana i te reo hōtaka tū rite C ++, C #, Pascal & Delphi. hanga katoa rerekē, ora tere me te tae atu i roto i te ao ipurangi hihiri.

Mai i te serialization o whaiaro tiaki-

Ka taea e kitea e koe te tika hītori mo te wā "serialization" me te ahua i roto i te ora ia rā te ariā o "tikanga makutu". Ko he nui māmā mea katoa. Rite te taua rite te rerekētanga i waenganui i te haere noa o te C ++ i runga i te pakeke o te C # serialization rerekē i te ariā banal:

• tuhituhi i te ahanoa ki te aho;
• te pānui i te ahanoa i te aho.

Ka mea karapoti magic me tikanga mīharo namata - nehenehe, reo, engari iti mahi. Ko ngā te ao o te kōrero matua i roto i taua i te kitea, e faaroohia, me te sino taea te whakaahuatia katoa rite kuputuhi ohie, me te pipiri.

Kua kua Information tonu, he a ka waiho he aho pūāhua. No mea he aha te āhua. Ko te hanganga ōkawa o te reo hōtaka, tohu anake o te natura - Tapa tepu.

Ko te whakaaro o te tahuri te ahanoa ki te string kia e ka tika, ko reira taea ki te ora i tenei raina waho ngaro te faufaa - i te whakaaro rawa mahi.

Mai i whaiaro ki te whaiaro

he iti Semantics PHP hangä hanganga i roto i tona wetereo, engari ki te whakawhanake i te kaihoahoa ki te tūranga whakawhanake:

• Ko te timatanga - ki te waihanga i tētahi tauira rawa hou;
• Ko te āhua o nāianei - hangaia e te tauira ngā.

whāititanga PHP e tika ana ki te meka i te pūnaha o ngā vai te reira anake i te wa o te whārangi, haere atu ratou ratou.

Te hanga i tētahi pūnaha o ngā i roto i te hanganga o ngā whārangi i runga i tou pae, ka taea e te whakaora e koe i te reira. Hoki te kuwaretanga, e kore e karangatia e tika tenei tukanga serialization, ka taea e tatou te whakawhāiti i te tiaki o te tatūtangā (kōnae pātengi raraunga), a ka te hiahia kia whakaarahia anō te whārangi taua ranei te hanga tetahi ki runga ki te pae kotahi, whakahokia noa te āhua o nāianei o ngā take, e kua oti i hanga.

I roto i tenei horopaki, hanga te pūnaha ahanoa te kotahi anake, a i roto i te akoranga o te pae kei te whakawhanake noa te reira. I raro i tenei kaupapa, ka taea e koe te hoahoa i te pūnaha o ngā rite he hinengaro ki tikanga rerekē haere.

Whaiaro-perpetuating ahanoa pūnaha "mahara" nga mahi o te manuhiri me te whārangi mana, me ia wa rere tatou PHP, e kore te reira e hanga i te wahanga ka whakahokia ki te āhua o mua.