可能な限り確実にmkdirを成功させるには / Make mkdir

PHPerKaigi 2023 のLTの資料です

Transcript

1. ՄೳͳݶΓ࣮֬ʹ
   

   mkdirΛ੒ޭͤ͞Δʹ͸
   PHPerKaigi 2023
   
   
   ͗͢΍·@MASHݭָஂ
   

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2. Whoami
   • ਿࢁ ༞Ұ @oogFranz
   
   
   • αΠϘ΢ζͰେاۀ޲͚άϧʔϓ΢ΣΞ
   

   Garoon (Ψϧʔϯ) ࡞ͬͯΔ
   
   
   • ෳۀϛϡʔδγϟϯ
   
   
   • MASHݭָஂɺFried Banana CabinɺϒϧʔάϥεˑϙϦε
   
   

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3. σΟϨΫτϦΛPHP͔Β࡞Ε·͔͢ʁ
   function makeDirectory(string $path): bool
   {
   //???
   }
   

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4. mkdir() Ͱ༨༟ͩͥʂ
   function makeDirectory(string $path): bool
   {
   return mkdir($path);
   }
   

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5. mkdir() Ͱ༨༟ͩͥʂ
   ͜ͷ࣮૷ͷ໰୊఺Λग़དྷΔݶΓ্͛ͯΈ·͠ΐ͏ʂ
   function makeDirectory(string $path): bool
   {
   return mkdir($path);
   }
   

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6. σΟϨΫτϦύεΛࢦఆ͢ΔͱWarning
   makeDirectory('test/foo/bar');
   //Warning: mkdir(): No such file or directory in /usr/
   local/code/mkdir.php on line 9
   • testσΟϨΫτϦɺfoo σΟϨΫτϦ͕ଘࡏ͠ͳ͍৔߹
   

   Warning͕ൃੜ͢Δ
   
   
   • σΟϨΫτϦ͸࡞੒͞Εͳ͍
   

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7. ϚχϡΞϧΛͪΌΜͱಡΉ
   • recursiveΦϓγϣϯ͸mkdir ͷ —parents, -p Φϓγϣϯͱಉ͡
   
   
   • ਌σΟϨΫτϦΛඞཁʹԠͯ͡࡞੒ͯ͘͠ΕΔ
   mkdir(
   string $directory,
   int $permissions = 0777,
   bool $recursive = false,
   ?resource $context = null
   ): bool
   

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8. recursive = trueΛ࢖͏
   function makeDirectory(string $path): bool
   {
   return mkdir($path, recursive: true);
   }
   

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9. σΟϨΫτϦ͕طʹଘࡏ͢ΔͱWarning
   • ࡞੒લʹis_dir(),
   fi
   le_exists()ͰνΣοΫ͕ඞཁ
   
   
   • ͜Ε΋ϚχϡΞϧʹॻ͍ͯ͋Δ
   makeDirectory('foo');
   makeDirectory('foo');
   // Warning: mkdir(): File exists in /usr/local/
   code/mkdir.php on line 9
   

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10. is_dir,
    fi
    le_existsΛ࢖͏
    function makeDirectory(string $path): bool
    {
    if (is_dir($path)) {
    return true;
    }
    if (file_exists($path)) {
    return false;
    }
    return mkdir($path, recursive: true);
    }
    ✴
    fi
    le_exists() ͕ trueͷͱ͖͸݁ՌతʹσΟϨΫτϦ͕࡞੒Ͱ͖ͳ͍ͷͰ஫ҙ
    

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11. σΟϨΫτϦ͕ͳ͍ͷʹis_dir͕trueΛฦ͢
    makeDirectory('foo/bar');
    makeDirectory('foo/bar');
    sleep(10); //͜͜Ͱผϓϩηε͔Βfoo/barσΟϨΫτϦΛ࡟আ͢Δ
    
    
    makeDirectory('foo/bar');
    

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12. σΟϨΫτϦ͕ͳ͍ͷʹis_dir͕trueΛฦ͢
    makeDirectory('foo/bar');
    makeDirectory('foo/bar');
    sleep(10); //͜͜Ͱผϓϩηε͔Βfoo/barσΟϨΫτϦΛ࡟আ͢Δ
    
    
    makeDirectory('foo/bar');
    σΟϨΫτϦ͕࡞੒͞Εͳ͍ʂ
    

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13. is_dir()͸Ωϟογϡ͞Ε͍ͯΔʂ
    • is_dir()ͳͲͷ݁Ռ͸ύϑΥʔϚϯεͷͨΊʹΩϟογϡ͞ΕΔ
    
    
    • Ωϟογϡ͸ϓϩηε͝ͱʹ࡞੒͞ΕΔɻ
    
    
    • ଞͷϓϩηεʹΑͬͯϑΝΠϧͷεςʔλε͕มΘΔ৔߹͸
    ΩϟογϡͷΫϦΞ͕ඞཁ
    

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14. clearstatcache()Λ࢖͏
    function makeDirectory(string $path): bool
    {
    clearstatcache();
    if (is_dir($path)) {
    return true;
    }
    if (file_exists($path)) {
    return false;
    }
    return mkdir($path, recursive: true);
    }
    

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15. clearstatcache()Λ࢖͏
    function makeDirectory(string $path): bool
    {
    clearstatcache();
    if (is_dir($path)) {
    return true;
    }
    if (file_exists($path)) {
    return false;
    }
    return mkdir($path, recursive: true);
    }
    JT@EJS͕ਖ਼͘͠ಈ࡞͢Δ
    

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16. ࣮ߦλΠϛϯάʹΑͬͯWarning
    is_dir()
    is_dir()
    fi
    le_exits()
    fi
    le_exits()
    ϓϩηε1
    ϓϩηε2
    ·ͩσΟϨΫτϦ͕
    

    ଘࡏ͠ͳ͍ͷͰGBMTF
    

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17. ࣮ߦλΠϛϯάʹΑͬͯWarning
    is_dir()
    is_dir()
    fi
    le_exits()
    fi
    le_exits()
    mkdir()
    ϓϩηε1
    ϓϩηε2
    σΟϨΫτϦ࡞੒੒ޭ
    

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18. ࣮ߦλΠϛϯάʹΑͬͯWarning
    is_dir()
    is_dir()
    fi
    le_exits()
    fi
    le_exits()
    mkdir()
    mkdir()
    ϓϩηε1
    ϓϩηε2
    σΟϨΫτϦ࡞੒ࣦഊʂ
    

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19. Τϥʔͷ཈͑ํ
    • Τϥʔ੍ޚԋࢉࢠ `@` Λ࢖͏
    

    खܰɻͳΜ͔ෛ͚ͨؾ͕͢Δɻ
    
    
    • error_reporting Ͱ E_WARNINGΛ཈͑Δ
    

    ଞͷE_WARNING΋཈͑ͯ͠·͏ͷͰ͓קΊ͠ͳ͍
    
    
    • set_error_handler ͰWarningΛΩϟον͢Δ
    

    ਅ໘໨ʹ΍ΔͳΒ͜Εɻ
    
    
    • ഉଞ੍ޚʁʁ
    

    ΦʔόʔΩϧͰ͸ʁ͜ͷϝιουҎ֎͔Βͷݺͼग़͠ʹ͸উͯͳ͍ɺɺɺ
    

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20. Τϥʔ੍ޚԋࢉࢠΛ࢖ͬͨ৔߹
    function makeDirectory(string $path): bool
    {
    if (@mkdir($path, recursive: true) === false) {
    clearstatcache();
    return is_dir($path);
    }
    return true;
    }
    • Τϥʔ੍ޚʹ೚ͤͯࣄલͷσΟϨΫτϦνΣοΫ͸ෆཁʢ͔΋ʣ
    

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21. Permission
    • ͦ΋ͦ΋࡞੒ݖݶ͕ͳ͍৔߹΋E_WARNING͕ൃੜ
    
    
    • is_writableͰ֬ೝ͸Մೳ
    
    
    • ਌σΟϨΫτϦ͕͋Δͱ͖ɺͳ͍ͱ͖͕͋ΔͷͰ࠶ؼ͕ඞཁ
    
    
    • ΋͏࣮ߦ࣮ͯ͠ߦͰ͖Δ͔ࢼͨ͠ํ͕ૣ͘ͳ͍ʁʁ
    

    →Τϥʔ੍ޚ͸ඞਢ
    

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22. ·ͱΊ
    • mkdirͳͲϑΝΠϧγεςϜʹ৮Δ৔߹͸ߟྀϙΠϯτ͸ଟ͍
    
    
    • ϚχϡΞϧ͸ͪΌΜͱಡ΋͏
    
    
    • ϑΝΠϧγεςϜͷΩϟογϡ͸ϋϚΔͱͭΒ͍ͷͰɺ
    

    clearstatcacheΛ࢖͍·͠ΐ͏
    
    
    • ύʔϛογϣϯΉ͔͍ͣ͠
    
    
    • Ͳ͏ؤுͬͯ΋Warning͸ಀΕΒΕͳ͍ͷͰɺ
    

    Τϥʔ੍ޚ͕Μ͹Γ·͠ΐ͏
    

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23. αΠϘ΢ζPHPerKaigi ޙ೔ஊΠϕϯτʂ
    https://cybozu.connpass.com/event/277790/
    4/5ʢਫʣ 19:00~ @αΠϘ΢ζ೔ຊڮΦϑΟε
    

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