公式Docや@rana_kualuさんたちのブログを拝見しながら PHP8.4 新機能を試してみる

2024年12月8日開催の「PHP勉強会 in 広島 vol.2」の登壇発表資料です。

Transcript

1. ެࣜ%PD΍!SBOB@LVBMV͞ΜͨͪͷϒϩάΛഈݟ͠ͳ͕Β
   1)1
   ৽ػೳΛࢼͯ͠ΈΔ ೥݄೔
   1)1ษڧձ
   JO
   ޿ౡ
   7PM
   גࣜձࣾ(P24ZTUFN
   ڮޱ
   ྇
2. 
   1)1ϦϦʔε
   ㊗ ͍ͭʹ1)1͕ϦϦʔε͞Ε·ͨ͠👏👏👏
   օ͞Μɺ৽ػೳͳͲΩϟονΞοϓͰ͖ͯ·͔͢ʂʁ
   ࣗ෼͸શવͰ͢ɺɺɺ
   1)1͸೔ຊਓͷ͖ͪ͞͞Μ͕ϦϦʔεϚωʔδϟʔʢϧʔΩʔʣͱͯ͠બ͹Εͨ͜ͱ ΋࿩୊ʹͳΓ·ͨ͠Ͷ
3. 
   1)1ϦϦʔε
   ㊗ ࠓ೔͸1)1ͷػೳΛ͍͔ͭ͘ϐοΫΞοϓͯ͠ɺ࣮ࡍʹࢼͯ͠ΈΑ͏ͱࢥ͍·͢ʂʂ
   1)1ͷ%PDLFS؀ڥΛ༻ҙ࣮ͯ͠ࡍʹࢼͯ͠Έ·͠ΐ͏
   ҎԼͷϦϙδτϦʹࠓ೔࢖͏ίʔυΛஔ͍͍ͯ·͢
   (JU)VCɿIUUQTHJUIVCDPN5IF(,SIQIQQIQTUVEZJOIJSPTIJNB
4. 1)1৽ػೳ ެࣜυΩϡϝϯτɿIUUQTXXXQIQOFUNBOVBMKBNJHSBUJPOOFXGFBUVSFTQIQ ৽ػೳ
   1)1ίΞ
   ɾϓϩύςΟϑοΫɾඇରশՄࢹੑϓϩύςΟɾϨΠδʔΦϒδΣΫτɾ<a%FQSFDBUFE>
   ΞτϦϏϡʔτɾ1045
   Ҏ֎ͷ
   )551
   ϦΫΤετͰͷ
   3'$
   Ϛϧνύʔτ ϦΫΤετͷղੳɾׅހͳ͠Ͱͷ
   OFX
   ࣜͷνΣʔϯɾ8FBL3FGFSFODF
   ͷ σόοά৘ใͷվળɾ$MPTVSF
   ͷσόοά৘ใͷվળɾҟͳΔ໊લۭؒϒϩοΫͰಉҰͷγϯϘϧΛఆٛ
   ͜ͷ΄͔ʹ΋৽͘͠௥Ճ͞ΕͨΫϥε΍ؔ਺ɺάϩʔόϧఆ਺ͳͲ਺ଟ͘ͷ΋ͷ͕௥Ճ͞Ε͍ͯ·͢ɻ
   ԼҐޓ׵ੑͷͳ͍มߋ఺ʹ͋ΔɺFYJU ͷಈ࡞ͷมߋɻ
   1)1YͰਪ঑͞Εͳ͘ͳΔػೳɺ҉໧తͳOVMMBCMFύϥϝʔλʔͳͲؾʹͳΔ΋ͷ͕ͨ͘͞Μ͋Γ·͢ɻ
5. ΞδΣϯμ ࠓ೔͸ݸਓతʹؾʹͳ͍ͬͯΔҎԼΛऔΓѻ͍·͢ɻ ɾϓϩύςΟϑοΫ
   ɾඇରশՄࢹੑϓϩύςΟ
   ɾׅހͳ͠Ͱͷ
   OFX
   ࣜͷνΣʔϯ
   ɾ%BUFUJNF%BUFUJNF*NNVUBCMFDSFBUF'SPN5JNFTUBNQ
6. 1SPQFSUZ
   BDDFTT
   IPPLT <?php class PropertyAccessHooks { public string $phoneNumber { set { if (! ctype_digit($value)){ throw new InvalidArgumentException('ແޮͳి࿩൪߸Ͱ͢'); } if (strlen($value) < 10){ throw new InvalidArgumentException('ి࿩൪߸͸10ܻҎ্Ͱೖྗ͍ͯͩ͘͠͞'); } $this->phoneNumber = $value; } get => 'ి࿩൪߸͸' . $this->phoneNumber . 'Ͱ͢'; } } $hooks = new PropertyAccessHooks(); $hooks->phoneNumber = '09012341234'; echo $hooks->phoneNumber; // ి࿩൪߸͸09012341234Ͱ͢ !SBOB@LVBMV͞Μͷ2JJUBͷهࣄΛࢀ ߟʹͯ͠ΈͯΈ·͢ɻ
   IUUQTRJJUBDPNSBOB@LVBMV JUFNTEBDC
   ϓϩύςΟʹTFUUFSHFUUFSΛ௚઀ه ड़Ͱ͖Δߏจ
   /JLJUB͞ΜͷϓϩύςΟΞΫηαͷ 3'$͔Βདྷ͍ͯͯɺ$ͱ4XJGU͔Βେ ͖ͳӨڹΛड͚ͨͦ͏Ͱ͢ɻ
   ͜Ε·ͰHFU'PPTFU'PPɺΛهड़͠ ͖ͯͨ෦෼Λॻ͘ඞཁ͕ͳ͘ͳΓ· ͢ɻ
7. "TZNNFUSJD
   7JTJCJMJUZ
   W <?php class AsymmetricVisibilityV2 { public private(set) string $companyName = 'GoQSystem'; } $asymmetricVisibility = new AsymmetricVisibilityV2(); echo $asymmetricVisibility->companyName; // GoQSystem $asymmetricVisibility->companyName = 'GoQSystem Inc.'; // Fatal error !SBOB@LVBMV͞Μͷ2JJUBͷهࣄΛࢀ ߟʹͯ͠ΈͯΈ·͢ɻ
   IUUQTRJJUBDPNSBOB@LVBMV JUFNTDFFGFCGB
   ಡΊΔ͚Ͳॻ͚ͳ͍ϓϩύςΟΛએ ݴͰ͖ΔΑ͏ʹͳͬͨʢSFBEPOMZͱ ͸ҧ͏ʣ
   4XJGU͔Β࠾༻͍ͯ͠Δͦ͏Ͱ͢ɻ
   ͜Ε͔Β͸͜ͷॻ͖ํ͕ओྲྀʹͳͬ ͍͔ͯ͘΋͠Εͳ͍Ͱ͢Ͷɻ
8. OFX
   .Z$MBTT NFUIPE
   XJUIPVU
   QBSFOUIFTFT <?php class NewWithoutParentheses { public function exec() { echo 'PHPษڧձin޿ౡ Vol.2'.PHP_EOL; } } // PHP8.3 (new NewWithoutParentheses())->exec(); // PHP8.4 new NewWithoutParentheses()->exec(); !SBOB@LVBMV͞Μͷ2JJUBͷهࣄΛࢀ ߟʹͯ͠ΈͯΈ·͢ɻ
   IUUQTRJJUBDPNSBOB@LVBMV JUFNTGDFEBGBC
   OFX
   $MBTT EP Λ͔͚ΔΑ͏ʹͳ Γ·ͨ͠
   ͜Ε·Ͱ͸͜͏ॻ͍ͯ͠·͏ͱɺ
   OFX
   $MBTT EP ͱղऍ͞Εͯ͠ ·͏ͨΊΤϥʔʹͳ͍ͬͯ·ͨ͠
   +BWBɾ$ɾ5ZQF4DSJQUͳͲׅހ͕͍ Βͳ͍ଞͷݴޠʹ߹Θͤͨଆ໘΋͋ ΔΑ͏Ͱ͢
9. %BUFUJNF%BUFUJNF*NNVUBCMFDSFBUF'SPN5JNFTUBNQ <?php class CreateFromTimestamp { public function createFromTimestampOld($timestamp) { return DateTimeImmutable::createFromFormat('U', (string) $timestamp); } public function createFromTimestampNew($timestamp) { return DateTimeImmutable::createFromTimestamp($timestamp); } } $create = new CreateFromTimestamp(); echo $create->createFromTimestampOld(time())->format('Y-m-d H:i:s') . PHP_EOL; echo $create->createFromTimestampNew(time())->format('Y-m-d H:i:s') . PHP_EOL; NBDPDDJ͞ΜͷϒϩάͷهࣄΛࢀߟ ʹͯ͠ΈͯΈ·͢ɻ
   λΠϜελϯϓ͔Β%BUF5JNF͕࡞੒ Ͱ͖ΔΑ͏ʹͳΓ·ͨ͠
   ͜Ε·Ͱ͸DSFBUF'SPN'PSNBUΛར ༻͢Δඞཁ͕͋Γ·͕ͨ͠ɺඞཁͳ ͘ͳΓ·͢
   $BSCPOͰ͸ॻ͚͍ͯͨͷͰɺ -BSBWFMϢʔβʔͷํ͸ͪ͜Β͕ೃછ Έ͕͋ΔͷͰ͸ͱࢥ͍·͢
   1)1Ͱ΋ॻ͚ΔΑ͏ʹͳͬͨͷ͸خ ͍͠Ͱ͢
10. ࠷ޙʹ ຊ౰͸#$.BUI΋৮Ε͔ͨͬͨͷͰ͕͢ɺࣗ෼ͷ४උ͕௥͍͖ͭ·ͤΜͰͨ͠ɺɺɺ
    ͖ͪ͞͞Μͷͪ͜ΒͷಈըΦεεϝͰ͢
    1)1
    #$.BUIͷਐԽ
11. ࠷ޙʹ ۙ೥1)1΍-BSBWFMͷϝδϟʔɾϚΠφʔΞοϓσʔτظ͕ؒ୹͘ɺόοΫΤϯυ΋ϑϩϯτΤ ϯυͷΑ͏ʹΩϟονΞοϓ͕େมʹͳ͍ͬͯΔؾ΋͠·͕͢ɺଟ͘ͷίϯτϦϏϡʔλʔͷ͓ ͔͚ͰΑΓྑ͍ιϑτ΢ΣΞ։ൃ͕Ͱ͖͍ͯΔ͜ͱʹײँ͔͠ͳ͍Ͱ͢ɻ
    ઌ೔ɺ1)1ษڧձ!౦ژͰ෢ా͞Μ͕ొஃ͞Εͯɺ1)1ͷυΩϡϝϯτͷ࿩Λͯ͘͠Ε·ͨ͠ɻ
    Ұ෦Ͱ͸੝Γ্͕ͬͯ·͢ɻ
    044ߩݙνϟϯεͳͷͰɺͥͻʢࣗ෼΋΍Δ💪ʣ
12. ࠂ஌ ʢԾʣ1)1ΧϯϑΝϨϯε޿ౡ
    2025೥ळɺPHPΧϯϑΝϨϯεΛ޿ౡͰ։࠵༧ఆͰ͢ ʢԾʣ ίΞελοϑ΍͓ख఻͍͍͚ͯͨͩ͠Δํ͕͍Βͬ ͠ΌͬͨΒɺconnpassͷHiroshima.phpͷάϧʔϓʹ͝ ࢀՃ͍͚ͨͩΔͱخ͍͠Ͱ͢ɻ ʮٕज़ʯͷ࿩ʹߜͬͨΧϯϑΝϨϯεʹ͠Α͏͔ͳͱߟ ͍͑ͯ·͢ɻʢ࠷ۙ͸։ൃख๏΍։ൃੜ࢈ੑɺϚωδϝ ϯτɺϚΠϯυηοτͳͲͷ࿩͕ଟ͍ͷͰɿ๻΋޷͖ͳ ͷͰ͕͢ɺٕज़ͷ࿩͍ͨ͠ʂʣ