PHP or die

Webナイト宮崎 Vol.12　～てげPHP学びたい～ - connpass https://tegehoge.connpass.com/event/199828/

Transcript

1. PHP OR DIE
   WebφΠτٶ࡚ Vol.12
   

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2. ࣗݾ঺հ
   ➤0HBXB,PTVLFʢ!LPPHBXBʣ
   ➤Ξϧגࣜձࣾ
   ➤ٶ࡚͔Β౦ژʹϑϧϦϞʔτ
   ➤J04 4XJGU
   "OESPJE ,PUMJO
   
   5ZQF4DSJQU $44 7VFKT
   /VYUKTͳͲ
   ➤ݸਓ։ൃͰ1)1ʢ஌ࣝ͸7FSY
   Ͱࢭ·ͬͯΔʣ
   

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3. Α͘ݟΔʁίʔυ
   

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4. ಉ͡ϊϦͰ͜͏͔ͨͬͨ͠
   PHP Parse error: syntax error, unexpected 'return'
   

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5. https://stackoverflow.com/questions/14393173/in-php-why-does-or-die-work-but-or-return-doesnt
   

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6. ͭ·Γɺreturn ͸ʮࣜʯͰ͸ͳ͍
   

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7. “ࣜ͸ɺPHP ʹ͓͚Δ࠷΋ॏཁͳϏϧσΟϯάϒ
   ϩοΫͰ͢ɻPHPʹ͓͍ͯ͸ɺ΄ͱΜͲશͯͷ΋
   ͷ͸ࣜͰهड़͞Ε·͢ɻ ࠷΋؆୯Ͱ࠷΋ਖ਼֬ͳ
   ࣜͷఆٛ͸ɺ"஋͕͋Δ΋ͷશͯ"Ͱ͢ɻ
   ࣜͱ͸ - PHPϚχϡΞϧ
   

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8. ࣜͷྫ
   ➤$a = 5
   ➤5 ͸ 5 ͱ͍͏஋Λ༗͢Δʮࣜʯ
   ➤$b = $a
   ➤$a ͸ 5 ͱ͍͏஋Λ࣋ͭʮࣜʯ
   ➤$c = foo();
   ➤foo() ͸ԿΒ͔ͷ஋Λฦ͢ʮࣜʯ
   

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9. ࠷ॳͷྫΛࢥ͍ग़ͯ͠ΈΔ
   ➤ $fp = false or die(“hoge”);
   ΤϥʔʹͳΒͳ͍
   ➤ $fp = false or return 0;
   PHP Parse error: syntax error, unexpected ‘return'
   $fp = ࣜ1 or ࣜ2
   

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10. ݁࿦ɿΑͬͯɺ࣍ͷίʔυ͸ΤϥʔʹͳΔ
    PHP Parse error: syntax error, unexpected 'return'
    

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11. RETURN
    ➤ ੍ޚߏ଄ͷͻͱͭ
    

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12. ͋Γ͕ͱ͏
    ͍͟͝·ͨ͠
    

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