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PHP のドキュメントを読んで PHP のことをもっと知ろう
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Katsuhiro Ogawa
March 01, 2016
Technology
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3.2k
PHP のドキュメントを読んで PHP のことをもっと知ろう
at PHP BLT #3
Katsuhiro Ogawa
March 01, 2016
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Transcript
1)1ͷυΩϡϝϯτΛಡΜͰ 1)1ͷ͜ͱΛͬͱΖ͏ খ༤େ!pWFTUS 1 PHP BLT #3
খ༤େ (͓͕Θ͔ͭͻΖ) @fivestr Racing Driver (Amateur) Author of "Perfect PHP"
CTO at Ancar Inc. 2
Έͳ͞Μ1)1ͷ࠷৽ಈνΣοΫͯ͠·͔͢ʁ w 1)1ͰԿ͕৽͘͠ͳ͔ͬͨ w ࠓޙͲͷΑ͏ͳػೳ͕Ճ͞ΕΔ͔ 3
1)1 w εΧϥʔλΠϓώϯτ w ϦλʔϯλΠϓώϯτ w ԋࢉࢠ /VMM߹ମԋࢉࢠ w
ԋࢉࢠ εϖʔεγοϓԋࢉࢠ w ແ໊Ϋϥε 4
1)1&SSPS w 5ISPXBCMF w &SSPS w &YDFQUJPO w ͪͳΈʹ#BTF&YDFQUJPOͰͳ͘ͳΓ·ͨ͠ 5
use Entity\{Article, Author, Comment}; 6
ҠߦυΩϡϝϯτΛಡΈ·͠ΐ͏ w <1)1Y͔Β1)1YͷҠߦ> IUUQQIQOFUNBOVBMKBNJHSBUJPOQIQ w ֤ϝδϟʔϚΠφʔόʔδϣϯ͝ͱʹ ҠߦυΩϡϝϯτ͕͋Γ·͢ w
w υΩϡϝϯτͷτοϓ͔ΒḷΕ·͢ 7
ҠߦυΩϡϝϯτ͍͢͝ w جຊతʹͯ͢ͷมߋ͕·ͱΊΒΕ͍ͯ·͢ w ͔͍͍ͩͨ͠༁͞Ε͍ͯ·͢ w NUBLBHJ͞Μຊʹ͋Γ͕ͱ͏ 8
ࠓޙͷಈ͖Ͳ͏ͬͯݟ͍͚͍͍ͯͷʁ w ҠߦυΩϡϝϯτΛಡΊϦϦʔε͞Εͨ ใΘ͔ΔΑ͏ʹͳΓ·ͨ͠ w ͜Ε͔ΒՃ͞ΕΔػೳͱ͔ Ͳ͏ͬͯΕΑ͍ͷͰ͠ΐ͏͔ 9
1)13'$ w 3'$ͷϖʔδΛݟΔͱࠓޙͷಈ͖Λ νΣοΫͰ͖·͢ w IUUQTXJLJQIQOFUSGD 10
3'$ͷಈ͖ w %SBGU%JTDVTTJPO7PUJOH w "DDFQUFE*NQMFNFOUBUJPO w %FDMJOF w ථͷ݁Ռͷࢍ͕ͳ͍ͱ٫Լ͞ΕΔ 11
*NQMFNFOUFE 12
<>7PJE3FUVSO5ZQF w WPJE Γ͕ͳ͍ ΛϦλʔϯ λΠϓώϯτ͕ఆٛͰ͖ΔΑ͏ʹ 13
function process($data) :void { ... } 14
<>4VQQPSU$MBTT$POTUBOU7JTJCJMJUZ w ΫϥεఆʹΞΫηεम০ࢠΛ ઃఆͰ͖ΔΑ͏ʹ͢Δ 15
class Foo { private const BAR = 'baz'; } 16
"DDFQUFE 1FOEJOH*NQMFNFOUFE 17
"MMPXTQFDJGZJOHLFZTJOMJTU w MJTU Ͱ࿈ྻͷΩʔΛࢦఆͯ͠ ల։Ͱ͖ΔΑ͏ʹ͢Δ 18
list( 'type' => $type, 'value' => $value, ) = $attrs;
19
7PUJOH 20
(FOFSBMJ[FTVQQPSUPGOFHBUJWFTUSJOHP⒎TFUT w จࣈྻͷΦϑηοτࢦఆʹϚΠφεͷΛ ࢦఆͰ͖ΔΑ͏ʹ͢Δ w TVCTUSͳͲؔͰαϙʔτ͞Ε͍ͯͨ w ͍·ͷͱ͜ΖରͰ͍ͯͳ͍ͷͰ௨Γͦ͏ 21
$str = 'abcdef'; var_dump($str[-2]); // => string(1) "e" 22
6OEFS%JTDVTTJPO 23
5SBJUTXJUIJOUFSGBDFT w τϨΠτʹΠϯλʔϑΣΠεΛ ࣮Ͱ͖ΔΑ͏ʹ͢Δ w ͢Β͍͠ w ͥͻ࣮͍͖͍ͯͨͩͨ͠ 24
trait LoggerInjectTrait implements LoggerAwareInterface { protected $logger; /** @Inject */
public function setLogger(LoggerInterface $logger) { $this->logger = $logger; } } 25
%FDMJOF 26
1SPQFSUZ"DDFTTPST4ZOUBY w ΫϥεͷϓϩύςΟͷΞΫηαఆٛ w ΊͬͪΌཉ͔ͬͨ͠ͷʹͳΜͰ 27
$MBTT.FUBEBUB "OOPUBUJPOT w ΞϊςʔγϣϯͷωΠςΟϒαϙʔτ ٫Լ͞Ε͍ͯΔ w %PDίϝϯτͷΞϊςʔγϣϯΛѻ͏ ʮ"OOPUBUJPOTJOEPDCMPDLʯ *OBDUJWFʹͳ͍ͬͯΔ 28
·ͱΊΔͱ 29
1)1υΩϡϝϯτΛಡ͏ w ҠߦΨΠυΛಡΉͱϦϦʔεͷ༰͕ ѲͰ͖·͢ w 3'$ΛಡΉͱࠓޙͷػೳՃͳͲͷಈΛ ݟΔ͜ͱ͕Ͱ͖·͢ 30
͍͞͝ʹ 31
1)1ΤϯδχΞͱ J04ΤϯδχΞͱ "OESPJEΤϯδχΞͱ σβΠφʔͱ ͱ͔͘Ұॹʹಇ͍ͯ͘ΕΔํΛืू͍ͯ͠·͢ʂʂ 32