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徳丸本輪読会
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mcz9mm
July 20, 2017
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徳丸本輪読会
4.1
4.2
mcz9mm
July 20, 2017
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Transcript
ಙؙຊྠಡձ 4.1 WebΞϓϦέʔγϣϯͷػೳͱ੬ऑੑͷ ରԠ
੬ऑੑͷൃੜͱ໊শ • HTMLͷग़ྗ(ΫϩεαΠτεΫϦϓςΟϯά) • HTTPϔομͷग़ྗ(HTTPϔομΠϯδΣΫγϣϯ) • SQLͷݺͼग़͠(SQLΠϯδΣΫγϣϯ) • γΣϧίϚϯυͷݺͼग़͠(OSίϚϯυΠϯδΣΫγϣϯ) •
ϝʔϧϔομٴͼຊจͷग़ྗ(ϝʔϧϔομΠϯδΣΫγϣϯ)
ΠϯδΣΫγϣϯܥ੬ऑੑͱ • webΞϓϦέʔγϣϯͷ΄ͱΜͲ͕ςΩετ ܗࣜͷΠϯλʔϑΣʔεΛ༻͍ͯ͠Δ
͜ΕΒͷςΩετɺܾΊΒΕͨจ๏ɾϧʔϧͳͲʹ ΑΓɺͦͷதʹ໋ྩԋࢉɺσʔλ͕ೖ͍ͬͯΔ SELECT * FROM idol WHERE id = ‘$id'
͜ͷ$idʹςΩετͱͯ͠ɺҎԼͷจষΛ༩͑ͯΈΔ ';DELETE FROM users;'
֎෦͔Βྲྀ͠ࠐ·ΕͨςΩετ໋ྩͱͯ͠ଊ͑ΒΕ ͯ͠·͏ SELECT * FROM idol WHERE id = ';DELETE
FROM users;'
ಙؙຊྠಡձ 4.2 ೖྗॲཧͱηΩϡϦςΟ
webΞϓϦέʔγϣϯͰͷೖྗͰԿΛ͢Δ͔ • จࣈΤϯίʔσΟϯάͷଥੑݕূ • จࣈΤϯίʔσΟϯάͷม • ύϥϝʔλจࣈྻͷଥੑݕূ
PHPΛྫʹ͢Δͱɺೖྗ͞Εͨจࣈ͕ෆਖ਼ͳจࣈΤϯίʔσΟϯ άͰͳ͍͔ม͢Δ͜ͱ͕Ͱ͖Δɻ ͨͩɺෆਖ਼ͳσʔλআ͞ΕΔ͔ผͷจࣈʹஔ͖ΘΔͷͰɺ ݁Ռͱͯ͠߈ܸ͛Δ͕ɺ จࣈ͕Խ͚ͨ··ར༻ऀ͕ؾ͕͔ͭͣʹॲཧΛܧଓΛͯ͠͠·ͬ ͨΓ͢Δ
ೖྗͷݕূ • ೖྗͷؒҧ͍Λૣظʹൃݟͯ͠࠶ೖྗΛଅͨ͠Γɺ ϢʔβʔϏϦςΟΛ্͢Δ͜ͱ͕Ͱ͖Δ • σʔλͷෆ߹Λ͗ɺγεςϜͷ৴པੑΛ্͞ ͤΔ
όΠφϦηʔϑͱψϧόΠτ • ςΩετܗࣜʢจࣈσʔλʣҎ֎ͷσʔλܗ ࣜશൠͷ͜ͱɻόΠφϦܗࣜͷσʔλΛόΠ φϦσʔλͱ͍͏
όΠφϦηʔϑͱψϧόΠτ • ψϧόΠτ߈ܸͱɺԿΒ͔ͷϦΫΤετ͞Εͨ จࣈྻʹ%00(ψϧόΠτ)ΛؚΊΔ͜ͱͰɺWeb ΞϓϦέʔγϣϯଆͷηΩϡϦςΟʔνΣοΫΛ ͙͘Γൈ͚Δ߈ܸ • PHPࣗମCݴޠͰॻ͔Ε͍ͯΔΒ͘͠ɺPHPͱC ͷψϧόΠτʹର͢Δѻ͍͕ҧ͏ؔͷʮͶ͡Εʯ Λར༻ͨ͠߈ܸ
• ೖྗ͞ΕͨೖΓޱͰόΠφϦηʔϑͷؔΛ ༻͍ͯνΣοΫ͢Δ
όΠφϦηʔϑͱψϧόΠτ • ψϧόΠτ߈ܸͱɺԿΒ͔ͷϦΫΤετ͞Εͨ จࣈྻʹ%00(ψϧόΠτ)ΛؚΊΔ͜ͱͰɺWeb ΞϓϦέʔγϣϯଆͷηΩϡϦςΟʔνΣοΫΛ ͙͘Γൈ͚Δ߈ܸ • PHPࣗମCݴޠͰॻ͔Ε͍ͯΔΒ͘͠ɺPHPͱC ͷψϧόΠτʹର͢Δѻ͍͕ҧ͏ؔͷʮͶ͡Εʯ Λར༻ͨ͠߈ܸ
จࣈࣗମͷνΣοΫෆՄܽ • ʮͯ͢ͷจࣈΛڐՄʯ͢Δ͜ͱࣗମϦεΫ • จࣈνΣοΫ੍ޚจࣈͷνΣοΫ
ਖ਼نදݱͰݕূ͢Δ • value.match(/[a-zA-Z]/); //ӳࣈͷΈ • value.match(/^\d+$/);ɹɹ //֯ӳࣈͷΈ ͳͲͳͲɾɾ