PHPを学ぶということ / phpcon-2019

1)1ΛֶͿͱ͍͏͜ͱ    -FBSOJOH1)1 ʙ8IBUXFSFBMMZOFFEUPMFBSO 1)1ΧϯϑΝϨϯε ,FOJDIJSP,JTIJEB !TJ[VIJLP

,FOJDIJSP,JTIJEB 5PLZP +"1"/ TJ[VIJLP!HNBJMDPN !TJ[VIJLP IUUQTHJUIVCDPNTJ[VIJLP IUUQCMPHPQFOUPLZPKQ

w৘ใΛ૊৫͠ॲཧ͢ΔλεΫʹ͍ͭͯͷཧ ղΛ༰қʹ͠ɺΞϧΰϦζϜΛਖ਼֬ʹදݱ ͢Δ͜ͱ͕Ͱ͖Δɻ wਓؒಉ࢜ͷձ࿩ͱൺֱͯ͠ɺਖ਼֬ੑͱ׬શ ੑͷཁٻੑ͕ඇৗʹߴ͍ͱ͍͏ಛ௃͕͋ ΔɻࣗવݴޠͰਓؒಉ͕࢜ର࿩͢Δ৔߹ɺ εϖϧϛε΍จ๏తͳΤϥʔ͕͋ͬͯ΋૬ ख͸ঢ়گ͔Βద౰ʹิਖ਼͠ɺਖ਼֬ͳ಺༰Λ ೺Ѳ͢Δɻ͔͠͠ίϯϐϡʔλ͸ࢦ͕ࣔᐆ ດͰ͸ಈ࡞ͤͣɺϓϩάϥϚ͕ίʔυʹࠐ
ΊͨҙਤΛཧղͤ͞Δ͜ͱ͸Ͱ͖ͳ͍ 8IBU1SPHSBNNJOH-BOHVBHF https://ja.wikipedia.org/wiki/ϓϩάϥϛϯάݴޠ

w1FSTPOBM)PNF1BHF5PPMTɻ ೥ʹ(1-ͷԼͰެ։ wಈతͳ8FCϖʔδΛੜ੒͢ΔπʔϧΛىݯ ͱ͍ͯ͠ΔͨΊɺެࣜͷॲཧܥʹ͸8FCΞ ϓϦέʔγϣϯ։ൃʹؔ͢Δػೳ͕๛෋ʹ ૊Έࠐ·Ε͍ͯΔɻݩʑ1)1͸ϓϩάϥ ϛϯάݴޠͱݴ͑Δ΋ͷͰ͸ͳ͘ɺ୯ʹς ϯϓϨʔτతͳॲཧΛߦ͏͚ͩͰ͋ͬͨ ͕ɺ౓ॏͳΔػೳ௥Ճ΍ίʔυͷॻ͖௚͠ ʹΑΓɺݱࡏ͸໨తʹΑΒͣ൚༻తʹ࢖͏
͜ͱͷग़དྷΔεΫϦϓτݴޠͱͳ͍ͬͯΔ "CPVU1)11)1)ZQFSUFYU1SFQSPDFTTPS https://ja.wikipedia.org/wiki/PHP_(ϓϩάϥϛϯάݴޠ)

8):VTF1)1 ࢓ࣄ+0# $.4 ❤1)1$PNNVOJUZ
ֶߍ4DIPPM ❤1)1❤ 0UIFS ❤ ※ਤ͸ΠϝʔδͰ͢  Image is for illustration purposes

8IBUNBLFXJUI1)1 8FC"QQMJDBUJPO 5PPM-JCSBSZ $-*$PNNBOE (6*"QQMJDBUJPO
0UIFS +7. /&4  FUDʜ ※ਤ͸ΠϝʔδͰ͢  Image is for illustration purposes

wίϯϐϡʔλʔ͕දݱ͢ΔΞϧΰϦζϜΛ ֶͿ-FBSOUIFBMHPSJUINT wࢦ͕͍ࣔ͋·͍Ͱ͸͍͚ͳ͍ͷͰɺޡΓ͕ গͳ͘ͳΔ*%&Λར༻͢Δ*OTUSVDUJPOT TIPVMEOPUCFBNCJHVPVT6TF*%& wݴޠಛ༗ͷར༻ํ๏΍पล஌ࣝΛֶͿ -FBSOMBOHVBHFTQFDJpDVTBHFBOE QFSJQIFSBMLOPXMFEHF wॻ͍ͯಈ͔͢8SJUFBOE3VO -FBSO1SPHSBNNJOH
https://www.amazon.co.jp/dp/4798149772 http://algorithm.wiki/ja/app/

wΞΠσΞΛΑΓૣ͘ܗʹ  5PSFBMJTFPOFTDSFBUJWJUZGBTUFS  wίϛϡχςΟ͕׆ൃ  5IFDPNNVOJUZJTWFSZBDUJWF  8):1)1

http://gihyo.jp/news/report/2015/12/1401

wίϯϐϡʔλʔ͕දݱ͢ΔΞϧΰϦζϜΛ ֶͿ-FBSOUIFBMHPSJUINT wࢦ͕͍ࣔ͋·͍Ͱ͸͍͚ͳ͍ͷͰɺޡΓ͕ গͳ͘ͳΔ*%&Λར༻͢Δ*OTUSVDUJPOT TIPVMEOPUCFBNCJHVPVT6TF*%& wݴޠಛ༗ͷར༻ํ๏΍पล஌ࣝΛֶͿ -FBSOMBOHVBHFTQFDJpDVTBHFBOE QFSJQIFSBMLOPXMFEHF wॻ͍ͯಈ͔͢8SJUFBOE3VO -FBSO1SPHSBNNJOH
https://www.amazon.co.jp/dp/4798149772 http://algorithm.wiki/ja/app/

wίϯϐϡʔλʔ͕දݱ͢ΔΞϧΰϦζϜΛ ֶͿʢ-FFU$PEFͳͲ-FBSOUIF BMHPSJUINT CZ-FFU$PEFPSTJNJMBS w1)14UPSNΛ࢖͓͏64&1)14UPSN w8FCΞϓϦέʔγϣϯαΠτΛ࡞ΔͳΒ )5.-$44+BWB4DSJQU )551 T
1)1 42-ͱଟذʹΘͨΔ  /FFE)5.-$44+4 )551 1)1BOE 42-GPSCVJMEJOH8FCBQQMJDBUJPO wQIQBc4 -FBSO1)1

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"MPUPG4LJMMTOFFEFE

Webアプリって  15分でできるんでしょ？    I know that a web app can
be made in 15 minutes. is it wrong?

)JTUPSZ ݱࡏ )551 )5.- +4 1)1
42- .PKBWJ "HBWJ 4ZNGPOZ $BLF1)1 $* ;FOE :JJ 4MJN 'VFM -BSWFM "VSB Y https://github.com/pmjones/php-history

PHPͷೖྗ͸HTTPϦΫΤετ  ग़ྗ͸HTML͚ͩͲɺҰ୴๨ΕΑ͏  / Input is HTTP request.   The output
is HTML, but for now forget it PHP͔Β͸PDOܦ༝ͰSQL  (Web APIͳΒHTTP CLIENT)   From PHP, execute SQL via PDO.   (If using Web API, use HTTP CLIENT) ೖྗ ஝ੵ Ճ޻

-FBSO8FC https://www.amazon.co.jp/dp/4873118042 https://www.amazon.co.jp/dp/4774142042

-FBSO42-3%# https://www.amazon.co.jp/dp/4297104083 https://www.amazon.co.jp/dp/4774180661

-FBSO1)1 http://php.net/manual/ja/getting-started.php

https://qiita.com/shibacho/items/20f6eee42083c620b556

5SZ3VO > - $ php -S 0.0.0.0:8080 -t src PHP
Development Server started Listening on http://0.0.0.0:8080 Document root is /var/src Press Ctrl-C to quit. $ php -a Interactive shell php > var_dump("Hello World!"); string(12) "Hello World!"

w 1)1ͱ42-JUFΛΠϯετʔϧ͢Δ  *OTUBMM1)1BOE42-JUF w )5.-λάͱ؆୯ͳ1)1ίʔυΛؚΜͩQIQ ϑΝΠϧΛ࡞ͬͯΈΔ  $SFBUFBQIQpMFXJUI)5.-UBHTBOETJNQMF1)1DPEF  http://php.net/manual/ja/tutorial.firstpage.php w )5.-ʹGPSNΛೖΕͯɺૹ৴͞Ε͖ͯͨ৘ใΛ
औಘ͢Δ  1VUUIFGPSNJO)5.-BOEHFUUIFTFOUJOGPSNBUJPO  http://php.net/manual/ja/tutorial.forms.php  http://php.net/manual/ja/language.variables.external.php w 1%0Λ࢖ͬͯ%#ʹ஋Λอଘͯ͠ΈΔ  5SZTBWJOHUIFWBMVFJO%#VTJOH1%0  http://php.net/manual/ja/book.pdo.php

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wʜ

-PWF$PNNVOJUZ wશࠃ֤஍ͰΧϯϑΝϨϯε΍ษڧձ͕࣮ࢪ ͞Ε͍ͯ·͢$POGFSFODFTBOETUVEZ HSPVQTBSFIFMEJOFBDISFHJPO w1)1Ϣʔβʔζ ೔ຊޠ 4MBDLʹՃೖ͠ ͯɺަྲྀ࣭໰ͯ͠ΈΑ͏ʂ+PJO1)1 VTFS +"1"/&4&
4MBDL  ⬇   IUUQTTMBDLJOQIQVTFST KBIFSPLVBQQDPN

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5SZNBLFBQBUDIGPSDPOUSJCVUFUP 044

Walk on road, hm? Walk left side, safe. Walk right
side, safe. Walk middle, sooner or later, “get squish just like grape.” Here, karate, same thing. Either you karate do "yes" or karate do "no." You karate do "guess so,"just like grape. Understand?   [ from Karate Kid / Mr.Miyagi]

WJTJUNZCMPHHJUIVC https://github.com/sizuhiko http://blog.open.tokyo.jp

PHPを学ぶということ / phpcon-2019

PHPを学ぶということ / phpcon-2019

Kenichiro Kishida

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1)1ΛֶͿͱ͍͏͜ͱ    -FBSOJOH1)1 ʙ8IBUXFSFBMMZOFFEUPMFBSO 1)1ΧϯϑΝϨϯε ,FOJDIJSP,JTIJEB !TJ[VIJLP

,FOJDIJSP,JTIJEB 5PLZP +"1"/ TJ[VIJLP!HNBJMDPN !TJ[VIJLP IUUQTHJUIVCDPNTJ[VIJLP IUUQCMPHPQFOUPLZPKQ

8):VTF1)1 ࢓ࣄ+0# $.4 ❤1)1$PNNVOJUZ

8IBUNBLFXJUI1)1 8FC"QQMJDBUJPO 5PPM-JCSBSZ $-$PNNBOE (6"QQMJDBUJPO

wΞΠσΞΛΑΓૣ͘ܗʹ  5PSFBMJTFPOFTDSFBUJWJUZGBTUFS  wίϛϡχςΟ͕׆ൃ  5IFDPNNVOJUZJTWFSZBDUJWF  8):1)1

http://gihyo.jp/news/report/2015/12/1401

wίϯϐϡʔλʔ͕දݱ͢ΔΞϧΰϦζϜΛ ֶͿʢ-FFU$PEFͳͲ-FBSOUIF BMHPSJUINT CZ-FFU$PEFPSTJNJMBS w1)14UPSNΛ࢖͓͏64&1)14UPSN w8FCΞϓϦέʔγϣϯαΠτΛ࡞ΔͳΒ )5.-$44+BWB4DSJQU )551 T

w)5.-ݴޠ͡ΌΜ-BOHVBHF w$44ݴޠ͡ΌΜ ࠷ޙ͕-͡Όͳ͍͚ ͲελΠϧγʔτݴޠͱݴ͍·͢ -BOHVBHF w+BWB4DSJQUݴޠ͡ΌΜ-BOHVBHF w1)1͜͜ΛֶΜͰԿ͔Λ࡞Γ͍ͨʂ  *XBOUUPMFBSO1)1UPNBLFTPNFUIJOH w42-ݴޠ͡ΌΜ-BOHVBHF

Webアプリって  15分でできるんでしょ？    I know that a web app can

)JTUPSZ ݱࡏ )551 )5.- +4 1)1

PHPͷೖྗ͸HTTPϦΫΤετ  ग़ྗ͸HTML͚ͩͲɺҰ୴๨ΕΑ͏  / Input is HTTP request.   The output

-FBSO8FC https://www.amazon.co.jp/dp/4873118042 https://www.amazon.co.jp/dp/4774142042

-FBSO42-3%# https://www.amazon.co.jp/dp/4297104083 https://www.amazon.co.jp/dp/4774180661

-FBSO1)1 http://php.net/manual/ja/getting-started.php

https://qiita.com/shibacho/items/20f6eee42083c620b556

5SZ3VO > - $ php -S 0.0.0.0:8080 -t src PHP

w 1)1ͱ42-JUFΛΠϯετʔϧ͢Δ  *OTUBMM1)1BOE42-JUF w )5.-λάͱ؆୯ͳ1)1ίʔυΛؚΜͩQIQ ϑΝΠϧΛ࡞ͬͯΈΔ  $SFBUFBQIQpMFXJUI)5.-UBHTBOETJNQMF1)1DPEF  http://php.net/manual/ja/tutorial.firstpage.php w )5.-ʹGPSNΛೖΕͯɺૹ৴͞Ε͖ͯͨ৘ใΛ

wؔ਺Λ࡞ͬͯΈΔ  5SZNBLJOHBGVODUJPO wϑΝΠϧΛ෼ׂͯ͠ΈΔ  5SZTQMJUUJOHUIFpMF w֎෦ϥΠϒϥϦΛ࢖ͬͯΈΔ  5SZVTJOHUIFMJCSBSZ wΦϒδΣΫτࢦ޲ʹऔΓ૊ΜͰΈΔ  5SZPCKFDUPSJFOUFEQSPHSBNNJOH wϑϨʔϜϫʔΫΛ࢖ͬͯΈΔ  5SZVTJOHUIFGSBNFXPSL

-PWF$PNNVOJUZ wશࠃ֤஍ͰΧϯϑΝϨϯε΍ษڧձ͕࣮ࢪ ͞Ε͍ͯ·͢$POGFSFODFTBOETUVEZ HSPVQTBSFIFMEJOFBDISFHJPO w1)1Ϣʔβʔζ ೔ຊޠ 4MBDLʹՃೖ͠ ͯɺަྲྀ࣭໰ͯ͠ΈΑ͏ʂ+PJO1)1 VTFS +"1"/&4&

5P#F1SPGFTTJPOBM w1)15IF3JHIU8BZ  IUUQKBQIQUIFSJHIUXBZDPN wࣗ෼ͷମݧΛൃදͯ͠ΈΑ͏  5SZQSFTFOUBCPVUZPVSFYQFSJFODF BT BTQFBLFS w044ͷιʔείʔυΛಡΜͰΈΔ  5SZSFBEUIF044DPEF w044ʹύονΛ౤͛ͯΈΑ͏

Walk on road, hm? Walk left side, safe. Walk right

WJTJUNZCMPHHJUIVC https://github.com/sizuhiko http://blog.open.tokyo.jp