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ΊΓʔ ຊͷ FizzBuzz Λ͓ݟͤ͠·͢ ࠙ձ LT @PHP ΧϯϑΝϨϯε 2023
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ΊΓʔ m3m0r7 ͖ͬ͞ RubyVM Λ PHP Ͱ࣮͢ΔΛ͠ ·ͨ͠ memory1994 m3m0r7
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FizzBuzz ͬͯΔਓʙʁ
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૾ͨ͠ਓ ͍ΔΜ͡Όͳ͍Ͱ͠ΐ͏͔
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FizzBuzz ͰϧʔϓจΛ ͏ͷ͑
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ຊͷ FizzBuzz ΛݟͤͯΓ·͢Α
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͜ΕɼͪΌΜͱ 1 ʙ 100 ·Ͱͷ FizzBuzz ͕ग़ྗ͞Ε·͢
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Ͳ͏ಈ͍͍ͯΔͱࢥ͍·͔͢ʁ
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PHP $$var ͱ࣮ߦ͢Δͱ $var ʹ ೖ͍ͬͯΔΛม໊ͱͯ͠ࢀর͠·͢
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ͨͱ͑ $var = 'cat' ͱ͢Δͱ $$var $cat Λ࣮ߦ͠Α͏ͱ͠·͢ɻ
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ͭ·Γɼ$$$...$ ͦΕΛ ͻͨ͢Β܁Γฦ͍ͯ͠Δ͜ͱʹͳΓ·͢ɻ
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$var = '1' Λ $$var ͱ͢Δͱ $1 Λ ࢀর͠Α͏ͱ͠·͕͢
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͝ଘͷ௨Γ PHP Ͱ ม໊Λࣈ͔Β࢝ΊΒΕ·ͤΜ
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͔͠͠ $GLOBALS['1'] ͷΑ͏ʹ ࢀর͢Δ͜ͱͰ͖·͢
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PHP ϩʔΧϧมͱάϩʔόϧม Ͱ͋Δ $GLOBALS Λࢀর͠Α͏ͱ͠ ·͢
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͜ͷΑ͏ʹ͢Δ͜ͱͰ $var = '1' Λ $$var ͱ࣮ߦ͢Δͱ $GLOBALS['1'] ͕ ࢀর͞Ε·͢
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͔͠͠ $GLOBALS['1'] ηοτ͞Ε ͍ͯͳ͍ͷͰɼ͜ͷ··Ͱ Unde fi ned variable ʹͳΓ·͢
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࣮ $var = '1' Λ $$var ͱ࣮ߦ͢Δͱ͖ Unde fi ned variable ͕ग़ྗ͞ΕΔલʹ จࣈྻม͕Γ·͢
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ͭ·Γ class Ͱఆٛ͞Εͨ __toString ͕ൃՐ͢ΔͷͰ͢
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͜ͷੑ࣭Λར༻ͯ͠ɼ__toString ͷ λΠϛϯάͰ $GLOBALS['1'] ʢ1 ҙͷࣈʣΛఆ͍ٛͯ͠·͢
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ͦͯ͠ __toString ͷฦΓ ม໊ͱͯ͠ѻΘΕ·͢
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ͭ·Γ __toString Λ܁Γฦͨ͢ͼʹ 1, 2, 3 ... ͱ૿͍͖͑ͯ·͢ɻ
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ͦͷΛ༻͍ͯ Fizz or Buzz or ࣈ ͱग़͚͠Λߦ͍ग़ྗͤ͞Ε͍͍ͷ Ͱ͢
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͔͠͠ɼͦͷ··Ͱग़ྗͰ͖·ͤΜ
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ͦͷͨΊ print Λ༻͍ͯ ग़ྗΛߦ͍ͬͯ·͢
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ϫϯϥΠφʔϋοΫͰฦΓ͕ͳ͍ echo ΑΓฦΓ͕͋Δ print ͕ॏๅ͠ ·͢ʢͦͷ··ଞͷࣜʹࠞͥΒΕΔʣ
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https://gist.githubusercontent.com/m3m0r7/ f8059505046c6ab689aa728c2ca6f76c/raw/ be78189cb305358cd57c5ab31c251dd2dcc656d1/ fi zzbuzz.php
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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠