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90分間濃縮 PHPエラーの教室
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Yusuke Ando
October 17, 2012
Programming
5
280
90分間濃縮 PHPエラーの教室
エラーの種類と対処法を学ぼう。
Yusuke Ando
October 17, 2012
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Transcript
4IJNPLJUBQIQYusuke Ando (@yando) 4IJNPLJUBQIQYusuke Ando (@yando) 1)1Τϥʔͷڭࣨ ؒೱॖ
4IJNPLJUBQIQYusuke Ando (@yando) 4IJNPLJUBQIQYusuke Ando (@yando)
4IJNPLJUBQIQYusuke Ando (@yando) ԬͰͷϘϥϯςΟΞٸืʂ
4IJNPLJUBQIQYusuke Ando (@yando) ͜Μͳܦݧ͋Γ·ͤΜ͔ʁ
4IJNPLJUBQIQYusuke Ando (@yando) ը໘͕ਅͬനʹ
4IJNPLJUBQIQYusuke Ando (@yando) ը໘ʹ͓ܦΈ͍ͨͳͷ͕ͰΔ
4IJNPLJUBQIQYusuke Ando (@yando) αʔόͷϩά͕ΰϛཷΊʹͳ͍ͬͯΔ
4IJNPLJUBQIQYusuke Ando (@yando) Τϥʔਖ਼͘͠ѻ͍͑ͯ·͔͢ʁ
4IJNPLJUBQIQYusuke Ando (@yando)
4IJNPLJUBQIQYusuke Ando (@yando)
4IJNPLJUBQIQYusuke Ando (@yando) 1)1ͷΤϥʔͱྫ֎ʹؔ͢Δ औΓѻ͍ํ๏Λݟ͍͖ͯ·͢
4IJNPLJUBQIQYusuke Ando (@yando) ΤϥʔͷΠϩϋ wԿނΤϥʔ͕ى͖Δͷ͔ wΤϥʔؔ࿈ͷઃఆ wΤϥʔϋϯυϦϯά wྫ֎ॲཧ ຯ͚ͩΕͲॏཁͳࣝ
4IJNPLJUBQIQYusuke Ando (@yando) ԿނΤϥʔ͕ى͖Δͷ͔
4IJNPLJUBQIQYusuke Ando (@yando) Τϥʔͱ w1)1ͷεΫϦϓτΛ࣮ߦ͢Δࡍͷ֤ஈ֊Ͱൃੜ wߏจղੳ࣌ͷ wॲཧͷ࣮ߦதʹൃੜ͢Δ w֦ுϞδϡʔϧͳͲͷ֎෦ϓϩάϥϜ wωοτϫʔΫॲཧͳͲ௨৴͕ൃੜͨ͠߹ ঢ়گʹԠͯ͡ਖ਼͍͠ରॲ͕ҟͳΔ
4IJNPLJUBQIQYusuke Ando (@yando) Τϥʔͷछྨ ॏେʹԠͯ͡Ϩϕϧ͕ଘࡏ छྨ ༰ &@&3303'BUBM ࣮ߦෆՄೳɿॲཧఀࢭɺനը໘ &@8"3/*/(8BSOJOH
ܯࠂɿ࣮ߦ࣌ʹൃੜɺॲཧܧଓ &@1"34&1BSTF ղੳෆೳɿॲཧ࢝·Βͳ͍ɺനը໘ &@/05*$&/PUJDF ௨ɿʹͳΓ͏Δঢ়گɺॲཧܧଓ &@453*$5 &@%&13&$"5&% όʔδϣϯؒͷޓੑʹؔ͢ΔΤϥʔ
4IJNPLJUBQIQYusuke Ando (@yando) Կग़ͳ͍͔ɺյΕͨը໘͔ͷ͔Ε '"5"- 1"34& /05*$& 8"3/*/(FUD
4IJNPLJUBQIQYusuke Ando (@yando) &@1"34&1BSTF γϯϓϧͳߏจΤϥʔ FDIPFDIP FDIPEBUF FDIPUJNF wτʔΫϯͷग़ݱҐஔ͕ෆਖ਼ wηϛίϩϯΕɺϒϨʔεͷରԠؔ
wશ֯εϖʔεࠞೖ
4IJNPLJUBQIQYusuke Ando (@yando) &@&3303'"5"- ίʔυ͕࣮ߦ͞Εͨ࣌ͷঢ়ଶ͕ PCK JG PCKOVMM \ PCKHFU0CKFDU
^ PCKNZ'VOD wߏจ߹͍͕ͬͯͨɺ࣮ߦ͠Α͏ͱͨ͠ॲཧ͕ࣦഊ w໊ؔؒҧ͍ɺΦϒδΣΫτͷऔΓҧ͍ w֎෦ϞδϡʔϧͷΤϥʔ
4IJNPLJUBQIQYusuke Ando (@yando) &@8"3/*/( ΤϥʔΛݕͯ͠;͞Θ͍͠ॲཧ͕ඞཁ CPEZpMF@HFU@DPOUFOUT bIPHFUYU` FDIPl)FMMPz wॲཧ࣮ߦͰ͖͕ͨɺࣦഊͯ͠͠·ͬͨ߹
wϑΝΠϧωοτϫʔΫͷॲཧͳͲ wਖ਼ৗʹॲཧΛܧଓ͢Δࣄ͓ͦΒ͍͘͠
4IJNPLJUBQIQYusuke Ando (@yando) &@/05*$& ಈ͍͍ͯͨͱͯ͠ةݥੑ͋Γ JG EBUBOVMM \ FDIPb)FMMP` FDIP)0(&
^ wະఆٛͷมɺఆΛͬͨ߹ wؔͷҾ͕ਖ਼͘͠ͳ͍ wߟྀͷΓͳ͍ίʔυͰൃੜ͍͢͠
4IJNPLJUBQIQYusuke Ando (@yando) &@453*$5&@%&13&$"5&% ݹ͍Ҩ࢈Ͱൃੜ͘͢͠ɺෆՄආͳ߹ DMBTT4BNQMF \ GVODUJPOGPP \ FDIP)J
^ ^ 4BNQMFGPP w1)1ͷจ๏Λ1)1Ͱར༻ͨ͠߹ wকདྷഇࢭ͞ΕΔ༧ఆͷػೳΛͬͨ߹
4IJNPLJUBQIQYusuke Ando (@yando) 4FHNFOUBUJPO'BVMU wϩάʹz4FHNFOUBUJPO'BVMUzͱ͚ͩه͞ΕΔ αʔόͷΞοϓσʔτͳͲ͕ඞཁʹͳΔ
4IJNPLJUBQIQYusuke Ando (@yando) Τϥʔؔ࿈ͷઃఆ
4IJNPLJUBQIQYusuke Ando (@yando) Τϥʔ͕ը໘ʹग़ͳ͍ʁ wൃੜͨ͠ΤϥʔΛදࣔ͢Δ͔ઃఆ࣍ୈ wQIQJOJ·ͨIUBDDFTTͳͲͷઃఆ w࣮ߦ࣌ʹઃఆΛڧ੍తʹมߋ͢ΔࣄՄೳ wJOJ@TFU FSSPS@SFQPSUJOH EJTQMBZ@FSSPST
wΤϥʔΛϩάʹه͢Δ͔Ͳ͏͔ผͷઃఆ ։ൃ࣌දࣔɺӡ༻࣌ه͕ਖ਼͍͠
4IJNPLJUBQIQYusuke Ando (@yando) ਖ਼͍͠ઃఆ FSSPS@SFQPSUJOH&@"-- EJTQMBZ@FSSPST0O EJTQMBZ@TUBSUVQ@FSSPST0O MPH@FSSPST0O FSSPS@MPHQBUIUPFSSPSMPH FSSPS@SFQPSUJOH&@"--d&@%&13&$"5&%d&@453*$5
EJTQMBZ@FSSPST0⒎ EJTQMBZ@TUBSUVQ@FSSPST0⒎ MPH@FSSPST0O FSSPS@MPHQBUIUPFSSPSMPH ޓੑΤϥʔແࢹ શͯΛݕɺදࣔ දࣔ͠ͳ͍
4IJNPLJUBQIQYusuke Ando (@yando) ӡ༻தͷΤϥʔΛӅ͢ཧ༝ %#ใͳͲ͕ೖΔ߹ ෆ۩߹ͷൃੜ࣌ʹܯ ࠂ͕ग़Δ߹ ද่͕ࣔΕΔ͔
4IJNPLJUBQIQYusuke Ando (@yando) ͜͏͍͏ͷ
4IJNPLJUBQIQYusuke Ando (@yando) ͜Εμϝ QIQ !USJHHFS@FSSPS )J FDIP8PSME
ڧ੍తʹແࢹ ͜ΕΛଟ༻͢Δͱোൃੜ࣌ʹख͕͔Γ̌
4IJNPLJUBQIQYusuke Ando (@yando) ΤϥʔϋϯυϦϯά
4IJNPLJUBQIQYusuke Ando (@yando) ΤϥʔϋϯυϦϯά wΤϥʔ͕ൃੜͨ͠ޙʹߦ͏ॲཧ wൃੜͨ͠ΤϥʔͷϨϕϧʹԠͯ͡ॲཧ͕Մೳ wඪ४ͷΤϥʔϋϯυϥQIQJOJͷઃఆʹԠͨ͡ॲཧ wҙͷॲཧΛొ͢ΔࣄՄೳ wΤϥʔϋϯυϥ͔ΒݩͷॲཧʹΕΔ wҙͷΤϥʔΛى͜͢ࣄՄೳ
ϑϨʔϜϫʔΫͳͲͰར༻͞Ε͍ͯΔ
4IJNPLJUBQIQYusuke Ando (@yando) ΤϥʔϋϯυϦϯάͷྫ ඪ४ͷॲཧҎ֎ͷରԠ͕Մೳ GVODUJPOIBOEMFS OP TUS \ FDIP&SSPSTUSaO
SFUVSOUSVF ^ TFU@FSSPS@IBOEMFS IBOEMFS FDIPB USJHHFS@FSSPS .Z&SSPS wΤϥʔͷใΛҾͰड͚औΔ wSFUVSOͰݩͷॴ෮ؼ͢Δ
4IJNPLJUBQIQYusuke Ando (@yando) ΤϥʔϋϯυϦϯάͷྫ̎
4IJNPLJUBQIQYusuke Ando (@yando) ΤϥʔϋϯυϦϯάͷޙ ϋʔυͳӡ༻Λ͍͑ͯΔ͔ͷࢼۚੴ wॲཧ͕ܧଓ͢Δ8BSOJOH/PUJDFͷޙʹదͳॲཧ wෆ͢ΔͱۭͬΆͷϦετɺ่Εͨը໘ͳͲʹܨ͕Δ CPEZpMF@HFU@DPOUFOUT bIPHFUYU`
JG CPEZGBMTF \ NZ@FSSPS FYJU ^ FDIPl)FMMPz
4IJNPLJUBQIQYusuke Ando (@yando) ॏཁͳΜͰ͢ʂ ͕͢͞1)1ɺΤϥʔ࣌ͷฦΓ͕όϥό SZ
4IJNPLJUBQIQYusuke Ando (@yando) ྫ֎ॲཧ
4IJNPLJUBQIQYusuke Ando (@yando) ྫ֎ॲཧ w1)1͔Βར༻Ͱ͖ΔΤϥʔॲཧ w+BWBͳͲͷݴޠͰ࣮͕͋Δػߏ wޡͬͨར༻ํ๏ʹΑΓ༗ແӹʹͳ͍ͬͯΔྫଟ wਖ਼͑͘͠Τϥʔॲཧָ͕͘͢͝ʹͳΔ wؒҧͬͯ͏ͱແବʹίʔυ͕ଟ͘ͳͬͯɺڍಈ่յ ͜Ε͔Βྫ֎Λͬͯߦ͖͍ͨ
4IJNPLJUBQIQYusuke Ando (@yando) ྫ֎ॲཧͷྫ ྫ֎ΦϒδΣΫτΛUISPX͢ΔͱDBUDIʹೖΔ GVODUJPOIPHF \ JG USVF \
UISPXOFX&YDFQUJPO &SSPS ^ ^ USZ\ IPHF ^DBUDI &YDFQUJPOF \ FDIPFHFU.FTTBHF FYJU ^
4IJNPLJUBQIQYusuke Ando (@yando) ྫ֎ΦϒδΣΫτ wΦϒδΣΫτ͔ΒΤϥʔใ͕औಘՄೳ w&YDFQUJPOΛOFX͢Δ࣌ʹηοτ͞ΕͨใΛऔಘ wHFU.FTTBHFHFU$PEFHFU'JMFHFU-JOFHFU5SBDF
4IJNPLJUBQIQYusuke Ando (@yando) ྫ֎ॲཧͷࣦഊྫ ྫ֎ΦϒδΣΫτΛSFUVSO GVODUJPOIPHF \ JG USVF \
SFUVSOOFX&YDFQUJPO &SSPS ^ ^ USZ\ IPHF ^DBUDI &YDFQUJPOF \ FDIPFHFU.FTTBHF FYJU ^
4IJNPLJUBQIQYusuke Ando (@yando) ྫ֎ॲཧͷࣦഊྫ DBUDI͢Δྫ֎ͷܕ͕߹͍ͬͯͳ͍ GVODUJPOIPHF \ JG USVF \
UISPXOFX&YDFQUJPO &SSPS ^ ^ USZ\ IPHF ^DBUDI &YDFQUPOF \ FDIPFHFU.FTTBHF FYJU ^
4IJNPLJUBQIQYusuke Ando (@yando) ྫ֎ॲཧͷࣦഊྫ DBUDIͯ͠ͳʹ͍ͯ͠ͳ͍ GVODUJPOIPHF \ JG USVF \
UISPXOFX&YDFQUJPO &SSPS ^ ^ USZ\ IPHF ^DBUDI &YDFQUJPOF \ ^
4IJNPLJUBQIQYusuke Ando (@yando) ྫ֎ॲཧʹؔ͢Δޡղ wUSZDBUDIΛͨ͘͞Μॻ͘ͷ͕ਖ਼͍͠ίʔυ ˠ͖ͪΜͱॻ͚ڊେͳίʔυͰDBUDIҰՕॴͰΑ͍ wೖྗΤϥʔͳͲͰྫ֎ॲཧΛ͏͖ ˠ௨ৗൃੜ͠͏Δͷྫ֎Ͱͳ͍ wDBUDI͢ΕͱΓ͋͑ͣ0, ˠDBUDI͢ΔͷͲ͏ͯ͠ඞཁͳ߹ͷΈ
ਖ਼͘͠ྫ֎Λѻ͏ϓϩδΣΫτͷكͳࣄ
4IJNPLJUBQIQYusuke Ando (@yando) ྫ֎ॲཧͷࣗಈԽ wDBUDI͞Εͳ͔ͬͨྫ֎͕࠷ऴతʹࢦఆͨؔ͠౸ୡ GVODUJPOIBOEMFS FYDFQUJPO \ FDIPFYDFQUJPOHFU.FTTBHF
^ TFU@FYDFQUJPO@IBOEMFS lIBOEMFSz
4IJNPLJUBQIQYusuke Ando (@yando) ·ͱΊ OPNPSFFSSPS@SFQPSUJOH OPNPSF!IPHF wʮը໘͕ന͘ͳΓ·ͨ͠ʯແҙຯ
wΤϥʔͷ༰Λ֬ೝ͠ͳ͚ΕରԠෆՄೳ w/PUJDF͕ଟ͍͔ΒΤϥʔΛফ͢ຊస w௨ৗՔಇதΤϥʔ͕ൃੜ͠ͳ͍ͷ͕ཧ wϥΠϒϥϦϓϥάΠϯ͕/PUJDF8BSOJOHΛਨΕྲྀ͢ͷ ඇৗʹ͕େ͖͘ɺഇΕΔݪҼ
4IJNPLJUBQIQYusuke Ando (@yando) ࣭ʁ