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可能な限り確実にmkdirを成功させるには / Make mkdir
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Yuichi Sugiyama
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March 25, 2023
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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
Yuichi Sugiyama
PRO
March 25, 2023
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Transcript
ՄೳͳݶΓ࣮֬ʹ mkdirΛޭͤ͞Δʹ PHPerKaigi 2023 ͗͢·@MASHݭָஂ
Whoami • ਿࢁ ༞Ұ @oogFranz • αΠϘζͰେاۀ͚άϧʔϓΣΞ Garoon (Ψϧʔϯ)
࡞ͬͯΔ • ෳۀϛϡʔδγϟϯ • MASHݭָஂɺFried Banana CabinɺϒϧʔάϥεˑϙϦε
σΟϨΫτϦΛPHP͔Β࡞Ε·͔͢ʁ function makeDirectory(string $path): bool { //??? }
mkdir() Ͱ༨༟ͩͥʂ function makeDirectory(string $path): bool { return mkdir($path); }
mkdir() Ͱ༨༟ͩͥʂ ͜ͷ࣮ͷΛग़དྷΔݶΓ্͛ͯΈ·͠ΐ͏ʂ function makeDirectory(string $path): bool { return mkdir($path);
}
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
ϚχϡΞϧΛͪΌΜͱಡΉ • recursiveΦϓγϣϯmkdir ͷ —parents, -p Φϓγϣϯͱಉ͡ • σΟϨΫτϦΛඞཁʹԠͯ͡࡞ͯ͘͠ΕΔ mkdir(
string $directory, int $permissions = 0777, bool $recursive = false, ?resource $context = null ): bool
recursive = trueΛ͏ function makeDirectory(string $path): bool { return mkdir($path,
recursive: true); }
σΟϨΫτϦ͕طʹଘࡏ͢ΔͱWarning • ࡞લʹis_dir(), fi le_exists()ͰνΣοΫ͕ඞཁ • ͜ΕϚχϡΞϧʹॻ͍ͯ͋Δ makeDirectory('foo'); makeDirectory('foo'); //
Warning: mkdir(): File exists in /usr/local/ code/mkdir.php on line 9
is_dir, fi le_existsΛ͏ 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() ͕ trueͷͱ͖݁ՌతʹσΟϨΫτϦ͕࡞Ͱ͖ͳ͍ͷͰҙ
σΟϨΫτϦ͕ͳ͍ͷʹis_dir͕trueΛฦ͢ makeDirectory('foo/bar'); makeDirectory('foo/bar'); sleep(10); //͜͜Ͱผϓϩηε͔Βfoo/barσΟϨΫτϦΛআ͢Δ makeDirectory('foo/bar');
σΟϨΫτϦ͕ͳ͍ͷʹis_dir͕trueΛฦ͢ makeDirectory('foo/bar'); makeDirectory('foo/bar'); sleep(10); //͜͜Ͱผϓϩηε͔Βfoo/barσΟϨΫτϦΛআ͢Δ makeDirectory('foo/bar'); σΟϨΫτϦ͕࡞͞Εͳ͍ʂ
is_dir()Ωϟογϡ͞Ε͍ͯΔʂ • is_dir()ͳͲͷ݁ՌύϑΥʔϚϯεͷͨΊʹΩϟογϡ͞ΕΔ • Ωϟογϡϓϩηε͝ͱʹ࡞͞ΕΔɻ • ଞͷϓϩηεʹΑͬͯϑΝΠϧͷεςʔλε͕มΘΔ߹ ΩϟογϡͷΫϦΞ͕ඞཁ
clearstatcache()Λ͏ function makeDirectory(string $path): bool { clearstatcache(); if (is_dir($path)) {
return true; } if (file_exists($path)) { return false; } return mkdir($path, recursive: true); }
clearstatcache()Λ͏ 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
࣮ߦλΠϛϯάʹΑͬͯWarning is_dir() is_dir() fi le_exits() fi le_exits() ϓϩηε1 ϓϩηε2 ·ͩσΟϨΫτϦ͕
ଘࡏ͠ͳ͍ͷͰGBMTF
࣮ߦλΠϛϯάʹΑͬͯWarning is_dir() is_dir() fi le_exits() fi le_exits() mkdir() ϓϩηε1 ϓϩηε2
σΟϨΫτϦ࡞ޭ
࣮ߦλΠϛϯάʹΑͬͯWarning is_dir() is_dir() fi le_exits() fi le_exits() mkdir() mkdir() ϓϩηε1
ϓϩηε2 σΟϨΫτϦ࡞ࣦഊʂ
Τϥʔͷ͑ํ • Τϥʔ੍ޚԋࢉࢠ `@` Λ͏ खܰɻͳΜ͔ෛ͚ͨؾ͕͢Δɻ • error_reporting Ͱ
E_WARNINGΛ͑Δ ଞͷE_WARNING͑ͯ͠·͏ͷͰ͓קΊ͠ͳ͍ • set_error_handler ͰWarningΛΩϟον͢Δ ਅ໘ʹΔͳΒ͜Εɻ • ഉଞ੍ޚʁʁ ΦʔόʔΩϧͰʁ͜ͷϝιουҎ֎͔Βͷݺͼग़͠ʹউͯͳ͍ɺɺɺ
Τϥʔ੍ޚԋࢉࢠΛͬͨ߹ function makeDirectory(string $path): bool { if (@mkdir($path, recursive: true)
=== false) { clearstatcache(); return is_dir($path); } return true; } • Τϥʔ੍ޚʹͤͯࣄલͷσΟϨΫτϦνΣοΫෆཁʢ͔ʣ
Permission • ͦͦ࡞ݖݶ͕ͳ͍߹E_WARNING͕ൃੜ • is_writableͰ֬ೝՄೳ • σΟϨΫτϦ͕͋Δͱ͖ɺͳ͍ͱ͖͕͋ΔͷͰ࠶ؼ͕ඞཁ • ͏࣮ߦ࣮ͯ͠ߦͰ͖Δ͔ࢼͨ͠ํ͕ૣ͘ͳ͍ʁʁ
→Τϥʔ੍ޚඞਢ
·ͱΊ • mkdirͳͲϑΝΠϧγεςϜʹ৮Δ߹ߟྀϙΠϯτଟ͍ • ϚχϡΞϧͪΌΜͱಡ͏ • ϑΝΠϧγεςϜͷΩϟογϡϋϚΔͱͭΒ͍ͷͰɺ clearstatcacheΛ͍·͠ΐ͏ •
ύʔϛογϣϯΉ͔͍ͣ͠ • Ͳ͏ؤுͬͯWarningಀΕΒΕͳ͍ͷͰɺ Τϥʔ੍ޚ͕ΜΓ·͠ΐ͏
αΠϘζPHPerKaigi ޙஊΠϕϯτʂ https://cybozu.connpass.com/event/277790/ 4/5ʢਫʣ 19:00~ @αΠϘζຊڮΦϑΟε