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PHP or die

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/

Kosuke Ogawa

January 22, 2021
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  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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