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あの日見たバグを僕達はまだ公式ドキュメントで見れない / The bug we saw that day
Yoshihide Taniguchi
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あの日見たバグを僕達はまだ公式ドキュメントで見れない / The bug we saw that day
2017/01/31 PHP 勉強会 での LT 資料です
Yoshihide Taniguchi
January 31, 2017
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Transcript
୩ޱఓӳ!SBWFMMM ͋ͷݟͨόάͷৄࡉΛ ୡ·ͩ ެࣜυΩϡϝϯτͰ ݟΕͳ͍
ࠓ͢͜ͱ w1)1ͷόʔδϣϯΞοϓதʹ౿Μͩόάʹ͍ͭͯ wܦҢ wࣄ݅ wରԠ
୩ޱఓӳ@ravelll ( ͨʹ͙ͪc͙ͬ͞Μ ͱݺΕ͍ͯ·͢
1)1ͷόʔδϣϯΞοϓΛ͍ͬͯͨ w͋Δ8FCΞϓϦέʔγϣϯͷϩʔϧ $ wc -l $(find . -name \*.php) |
tail -1 325048 total w1)11)1 wίʔυमਖ਼͕΄΅΄΅ྃɺಈ࡞ݕূΛ͍ͯͨ͠
͋Εͬ͜ͷػೳಈ͔ͳ͍ʜ wϖʔδʹΞΫηεͨ͠ΒඇಉظʹσʔλΛऔಘɾඳը w"KBYͰ(&5ͯ͠KTPOड͚औͬͯඳը wKTPOऔಘ࣌ʹ1)1ଆͰΤϥʔ͕ग़͍ͯͨ •PHP Warning: mb_convert_variables(): Cannot handle recursive
references in ʙ
mb_convert_variables()
NC@DPOWFSU@WBSJBCMFT ͱʁ wมͷͷΤϯίʔσΟϯάΛม͢Δؔ ex) mb_convert_variables(‘UTF-8’, ’EUC-JP’, $var); w$varʹ4USJOH "SSBZ 0CKFDUΛͤΔ
wNC@DPOWFSU@FODPEJOHͱҾͷॱ͕ҧ͏ʢ͔Θ͍͍ʣ mb_convert_variables($to_enc, $from_enc, $var); mb_convert_encoding($str, $to_enc[, $from_enc]);
Cannot handle recursive references in …
Cannot handle recursive references in …
SFDVSTJWFͳSFGFSFODFTʁ
wͦΜͳྻ͍ͯ͠ͳ͍ͧʜʁ wͱ͍͏͔ [‘a’, ‘b’] Ͱ͢Βಉ͡ΤϥʔʹͳΔͧʁʁʁ Ͳ͔͜ͷόʔδϣϯͰ༷͕มΘͬͨʹҧ͍ͳ͍ʂ ެࣜυΩϡϝϯτΛಡ͏ʂʂ
None
ಛʹݴٴ͞Εͯͳ͍
ʔϜࠔͬͨʜ wόʔδϣϯΞοϓલޙͰ1)1ͷιʔεΛಡΈൺͯΈͨͷͷ $ݴޠྗ͕ͯ͘࠶ؼࢀরΛݕ͢ΔΈ͕૿͑ͯΔ͜ͱҎ֎Α ͔͘Βͳ͍ʜ wNC@DPOWFSU@FODPEJOHؔΛ͏Α͏ʹΞϓϦέʔγϣϯͷ࣮ Λ͍͔ͯ͘͠͠ͳ͍ͷ͔ʜ͍Ͱ݁ߏͬͯΔͱ͜Ζ͋Δʜ
None
None
Ξοοο
ؔͷόά༷ͩͬͨ ‣ୈҾʢมݩͷΤϯίʔσΟϯάʣʹͭҎ্ͷΤϯίʔσΟϯ άΛࢦఆͨ͠ͱ͖ɺมରͷ"SSBZͷ࠶ؼతࢀরͷݕ͕ࠪਖ਼ৗʹ Ͱ͖ͳ͍ ex) mb_convert_variables(‘UTF-8’, ‘EUC-JP,Shift_JIS’, $val); mb_convert_variables(‘UTF-8’, ‘auto’,
$val); (‘auto’ ΤΠϦΞεͰɺmbstring.language=Japanese ͷͱ͖ͳΒ ‘ASCII,JIS,UTF-8,EUC-JP,SJIS’)
मਖ਼ϓϧϦΫग़ͯͨʢʣ ‣·͞ʹɺͳςετ͕Ճ͞Ε͍ͯͨʜʂ
ରԠ wόά͕ੜ·ΕΔલͷόʔδϣϯʢʣΛ͏͜ͱʹͨ͠ w͏1)1ܥ"DUJWF4VQQPSUͰͳ͘ͳΓେ͖ͳػೳ Ճ͕ͳ͍ wࠓؤுͬͯͱ͔ʹ͢ΔΑΓ9ʹ͘͢ؤுͬͨ ΄͏͕Α͍ͷͰʜʁ
·ͱΊ wόʔδϣϯΞοϓதʹݴޠͷόάͱग़ձͬͨΛڞ༗͠·ͨ͠ wNC@DPOWFSU@WBSJBCMFTͰϋϚͬͨ wݪҼ͕υΩϡϝϯτʹॻ͔Εͯͳ͔ͬͨ ʢݴٴͨ͠Ϣʔβίϝϯτ͋ͬͨʣ wؔࣗମʹόά͕͋Δ͜ͱ͕͔ͬͨ w1)1Λ͏͜ͱͰҰ୴ճආͨ͠