PHP8をざっくり解説してみる

Transcript

1. PHP8Λͬ͘͟Γղઆͯ͠ΈΔ 2021/1/22 WebφΠτٶ࡚ vol.12 େ௩ਅݴ
2. ࣗݾ঺հ
3. ࣗݾ঺հ -BSBWFM
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4. ձࣾ঺հ ߹ಉձࣾϊϚυϦ
   ૑ۀ
   ظ໨
   ϝϯόʔ
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5. 2020೥11݄26೔͸ Կͷ೔ʁ
6. ๻ͷ஀ੜ೔
7. Ͱ͸ͳ͘
8. PHP8ͷ஀ੜ೔ ʢϦϦʔε೔ʣ
9. ओͳมߋ఺ • JITίϯύΠϧʹΑΔੑೳվળ • Nullsafeԋࢉࢠʢψϧ҆શΦϖϨʔλʣ • Unionܕ • Matchࣜ • ଞʹ΋ଟ਺
10. ͦͷલʹ Ξϯέʔτ
11. ͲͷόʔδϣϯΛ࢖ͬͯΔʁ 1. PHP 5.x 2. PHP 7.0ʙ7.2 3. PHP 7.3ʙ7.4 4. PHP 8.0
12.            ҎԼ 7.4 7.3 7.2 7.0-7.1 5.6 5.5ҎԼ IUUQTXUFDITDPNUFDIOPMPHJFTEFUBJMTQMQIQ όʔδϣϯ͝ͱͷ࢖༻཰
13. PHP8ͷ৽ػೳ
14. JITίϯύΠϧ • JITʢJust-in-Time Compilerʣ˞࣮ߦ࣌ίϯύΠϥ • ίʔυΛϝϞϦʔʹΩϟογϡ͢ΔOPCacheͱซ༻ • ωΠςΟϒίʔυΛϝϞϦʔʹΩϟογϡ͢Δ͜ͱͰϓϩ άϥϜ࣮ߦΛߴ଎Խ • ΞϧΰϦζϜܥॲཧͰ͸2~3ഒఔ౓࣮ߦ଎౓͸޲্͕ͨ͠ɺ WordPressͳͲͷWebΞϓϦέʔγϣϯͰ͸਺%ఔ౓͔͠ ޲্͠ͳ͍
15. Nullsafeԋࢉࢠ DPVOUSZ
    
    
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    \
    
    
    
    
    BEESFTT
    
    VTFSHFU"EESFTT 
    
    
    
    
    
    
    JG
    BEESFTT
    
    OVMM
    \
    
    
    
    
    
    
    DPVOUSZ
    
    BEESFTTDPVOUSZ
    
    
    
    
    ^
    
    
    ^
    ^ DPVOUSZ
    
    TFTTJPO VTFS HFU"EESFTT DPVOUSZ 1)1 1)1 ifจʹΑΔnullνΣοΫ͕ෆཁʹͳΔ
16. Unionܕ 
    
    
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    ࣮ߦՄೳ QVCMJD
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    c
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    ^
    UIJTTBNQMF UFHFIPHF 
    ࣮ߦΤϥʔ 1)1 1)1 ࣮ߦ࣌ʹUnionܕͷܕνΣοΫ͕Ͱ͖Δ 1)1Ͱ͸Ξϊςʔγϣϯ ʹΑΔิ׬
17. Matchࣜ TXJUDI
    
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    ^
    
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    *
    FYQFDUFE 1)1 1)1 ݫີͳൺֱɺbreakจ͕ෆཁ
18. ·ͱΊ • JITίϯύΠϧ͕ಋೖ͞Ε͕ͨɺ࣮ӡ༻ͷWebΞ ϓϦ΁ͷੑೳ޲্͸͋·Γظ଴Ͱ͖ͳ͍ • Matchࣜ΍NullsafeԋࢉࢠΛ࢖͏͜ͱͰεϦϜ ͳίʔυΛॻ͚Δ • Unionܕ͕௥Ճ͞ΕɺܕγεςϜ͕ΑΓڧݻʹ ͳͬͨ
19. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ