Ukuhlolwa kwe-Beta kwe-PHP 8 sekuqalile

Kuthunyelwe ngu- ukukhishwa kokuqala kwe-beta kwegatsha elisha lolimi lokuhlela lwe-PHP 8. Ukukhishwa kuhlelelwe umhlaka-26 Novemba. Ngesikhathi esifanayo, ukukhishwa kokulungisa kwe-PHP 7.4.9, 7.3.21 kanye
7.2.33, okususe amaphutha anqwabelene kanye nokuba sengozini.

main emisha I-PHP 8:

• Iyavula I-JIT compiler, ukusetshenziswa okuzokwenza ngcono ukukhiqiza.
• ukweseka ama-agumenti omsebenzi aqanjwe, okukuvumela ukuthi udlulise amanani kumsebenzi maqondana namagama, i.e. Ungadlulisa ama-agumenti nganoma yiluphi uhlelo futhi uchaze ama-agumenti ozikhethela wona. Isibonelo, "array_fill(start_index: 0, number: 100, value: 50)".
• Lapho ubiza izindlela kuvunyelwe usebenzisa u-opharetha othi “?”, okuvumela ukuthi uqalise ucingo kuphela uma indlela ikhona, okugwema ukuhlola okungadingekile ukuze kubuyiselwe inani elithi “null”. Isibonelo, "$dateAsString = $booking->getStartDate()?->asDateTimeString()";
• ukweseka izinhlobo zezinyunyana, echaza amaqoqo ezinhlobo ezimbili noma ngaphezulu (isibonelo, “umsebenzi womphakathi foo(Foo|Bar$input): int|float;”).
• ukweseka izimfanelo (izichasiselo) ezikuvumela ukuthi ubophe imethadatha (efana nolwazi lohlobo) emakilasini ngaphandle kokusebenzisa i-syntax ye-Docblock.
• Ukwesekwa kwenkulumo Fanisa, okuyinto, ngokungafani ne-switch, engabuyisela amanani, isekele ukuhlanganisa izimo, isebenzise ukuqhathanisa okuqinile kohlobo, futhi ayidingi ukucaciswa "kwekhefu".

  Umphumela we-$ = match($input) {
  0 => "Sawubona",
  '1', '2', '3' => “umhlaba”,
  };

• I-syntax efushanisiwe Izincazelo zekilasi, ezikuvumela ukuthi uhlanganise incazelo yomakhi nezakhiwo.
• Uhlobo olusha lokubuyisela - Static.
• Uhlobo olusha - Kuxutshwe, engasetshenziswa ukunquma ukuthi umsebenzi uyawamukela yini amapharamitha ezinhlobo ezahlukene.
• Isimo phosa ukuphatha okuhlukile.
• I-WeakMap ukudala izinto ezinganikelwa ngesikhathi sokuqoqwa kukadoti (isibonelo, ukugcina ama-caches angadingekile).
• Ithuba usebenzisa isisho esithi “::class” ezintweni (okufana nokubiza get_class()).
• Ithuba izincazelo kubhlokhi yokubamba kokuhlukile okungaboshelwe kokuguquguqukayo.
• Ithuba kushiya ukhefana ngemva kwento yokugcina ohlwini lwamapharamitha omsebenzi.
• Isixhumi esibonakalayo esisha Iqinile ukukhomba noma yiziphi izinhlobo zeyunithi yezinhlamvu noma idatha engaguqulelwa kuyunithi yezinhlamvu (lapho __toString() indlela etholakalayo).
• Isici esisha str_contains(), i-analogue eyenziwe lula ye-strpos yokunquma ukwenzeka kochungechunge oluncane, kanye nemisebenzi ethi str_starts_with() kanye ne-str_ends_with() yokuhlola okufanayo ekuqaleni nasekupheleni kweyunithi yezinhlamvu.
• Isici esingeziwe fdiv(), eyenza umsebenzi wokuhlukanisa ngaphandle kokuphonsa iphutha lapho ihlukanisa ngoziro.
• Kushintshiwe intambo yokuhlanganisa ingqondo. Isibonelo, isisho esithi 'echo "sum:" . I-$a + $b' ngaphambilini yayihunyushwa ngokuthi 'echo ("sum: " . $a) + $b', futhi ku-PHP 8 izothathwa ngokuthi 'echo "sum: " . ($a + $b)'.
• Iqinisiwe ukuhlola izibalo nokusebenza kwebhithi, isibonelo, izinkulumo "[] % [42]" kanye "$object + 4" kuzoholela ephutheni.
• Kwenziwa i-algorithm yokuhlunga ezinzile lapho ukuhleleka kwamanani afanayo kugcinwa kuwo wonke ama-run ahlukene.

Source: opennet.ru