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Ί΋Γʔ ຊ౰ͷ FizzBuzz Λ͓ݟͤ͠·͢ ࠙਌ձ LT @PHP ΧϯϑΝϨϯε 2023

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Ί΋Γʔ m3m0r7 ͖ͬ͞ RubyVM Λ PHP Ͱ࣮૷͢Δ࿩Λ͠ ·ͨ͠ memory1994 m3m0r7

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FizzBuzz ஌ͬͯΔਓʙʁ

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૝૾ͨ͠ਓ΋
 ͍ΔΜ͡Όͳ͍Ͱ͠ΐ͏͔

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FizzBuzz ͰϧʔϓจΛ
 ࢖͏ͷ͸؁͑

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ຊ౰ͷ FizzBuzz Λݟͤͯ΍Γ·͢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
 ೖ͍ͬͯΔ஋Λม਺໊ͱͯ͠ࢀর͠·͢

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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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͝ଘ஌ͷ௨Γ PHP Ͱ͸
 ม਺໊Λ਺ࣈ͔Β࢝ΊΒΕ·ͤΜ

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͔͠͠ $GLOBALS['1'] ͷΑ͏ʹ
 ࢀর͢Δ͜ͱ͸Ͱ͖·͢

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PHP ͸ϩʔΧϧม਺ͱάϩʔόϧม਺ 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
 จࣈྻม׵͕૸Γ·͢

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ͭ·Γ class Ͱఆٛ͞Εͨ
 __toString ͕ൃՐ͢ΔͷͰ͢

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͜ͷੑ࣭Λར༻ͯ͠ɼ__toString ͷ
 λΠϛϯάͰ $GLOBALS['1'] ʢ1 ͸ ೚ҙͷ਺ࣈʣΛఆ͍ٛͯ͠·͢

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ͦͯ͠ __toString ͷฦΓ஋͸
 ม਺໊ͱͯ͠ѻΘΕ·͢

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ͭ·Γ __toString Λ܁Γฦͨ͢ͼʹ 1, 2, 3 ... ͱ૿͍͖͑ͯ·͢ɻ

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ͦͷ஋Λ༻͍ͯ Fizz or Buzz or ਺ࣈ ͱग़͠෼͚Λߦ͍ग़ྗͤ͞Ε͹͍͍ͷ Ͱ͢

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͔͠͠ɼͦͷ··Ͱ͸ग़ྗͰ͖·ͤΜ

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ͦͷͨΊ print Λ༻͍ͯ
 ग़ྗΛߦ͍ͬͯ·͢

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ϫϯϥΠφʔϋοΫͰ͸ฦΓ஋͕ͳ͍ echo ΑΓฦΓ஋͕͋Δ print ͕ॏๅ͠ ·͢ʢͦͷ··ଞͷࣜʹࠞͥΒΕΔʣ

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https://gist.githubusercontent.com/m3m0r7/ f8059505046c6ab689aa728c2ca6f76c/raw/ be78189cb305358cd57c5ab31c251dd2dcc656d1/ fi zzbuzz.php

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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠