STREAMͰ༡Ϳ PHPBLT#4

͓લͩΕΑʁ Hiraku ▸ composerʹจ۟ݴͬͯΔਓ ▸ ޫ͕஗͍ͱจ۟ݴͬͯΔਓ ▸ PHPerྺ8೥͙Β͍

STREAM ҙࣝͯ͠Δʁ

PHPʹ͓͚Δ STREAM

fopen, fclose, freadͳͲ CݴޠͰॻ͍ͯ͋Δ෦෼ SplFileObject, file_get_contents ετϦʔϜ (file://, php://, http://ͳͲ) ਂ෵ PHPer͕ීஈ
 ৮ͬͯΔॴ ΩϥΩϥͨ͠ ΍ͭ

΋͏ͪΐͬͱਅ໘໨ͳઆ໌ PHPͷSTREAMͱ͸ ▸ UNIXͷϑΝΠϧهड़ࢠ(FD)ʹ૬౰͢ΔPHPػೳ ▸ resourceܕͷҰछ ▸ is_resource($fp) === true ▸ get_resource_type($fp) === 'stream' ▸ fopen()ͰऔΕΔ΄͔ɺSTDOUT΍STDIN΋͜ͷ஥ؒ

ίʔυͰݴ͑͹

৭ʑछྨ͕͋Δ ▸ ϑΝΠϧύεͷઌ಄ͷ"file:// ..."ͷ෦෼Ͱ෼ذ͍ͯ͠Δ ▸ লུ͢Δͱfile://ͷҙຯʹͳΔ ▸ http:// ͱ͔ php:// ͱ͔ data:// ΋͋ΔΑ

ΈΜͳҙࣝͤͣʹ
 ࢖͍ͬͯΔ͸ͣʂ

PHPͷ"ετϦʔϜ"͕࣋ͭ ػೳ ϑΝΠϧγεςϜ
 Λந৅Խͨ͠΋ͷ ڊେͳσʔλΛѻ͑Δ ௨৴Λந৅Խ ฒߦॲཧ

໊લΑ͘ͳ͍ΑͶɻɻ ▸ Node.jsͷstreamsͱ͸ҧ͏ ▸ σΟϨΫτϦͷ֓೦͕͋Δ ▸ ύΠϓͱ͔ιέοτͱ͔ ▸ ඇಉظ͚ͨ͠Ε͹ࣗ෼Ͱॻ͘ ▸ όΠφϦྻ͔͠ѻ͑ͳ͍

STREAMͰ༡Ϳ

fopen, fclose, freadͳͲ CݴޠͰॻ͍ͯ͋Δ෦෼ SplFileObject, file_get_contents ετϦʔϜ (file://, php://, http://ͳͲ) ਂ෵ PHPer͕ීஈ
 ৮ͬͯΔॴ ΩϥΩϥͨ͠ ΍ͭ

=حົͳ͜ͱ͕Ͱ͖Δ ਂ෵ʹ͍ۙͱ͍͏͜ͱ͸

STREAMͰ༡Ϳ ωλ1

͝ଘ஌Ͱ͠ΐ͏͔ ૊ΈࠐΈͷstream͸ফͤΔ ▸ stream_wrapper_unregisterؔ਺ ▸ Ϋϥε΍ؔ਺͸(ී௨)ফͤͳ͍͚Ͳɺ
 stream͸ඪ४ػೳͰফͤΔ PHPͰػೳΛ ফͤΔͷ͸ΊͣΒ͍͠

ͼͬ͘Γ͢Δ΄ͲPHP͕໾ʹཱͨͳ͘ͳΔtips stream_wrapper_unregister('file') ▸ file://ͷొ࿥Λফ͢ ▸ require 'hoge.php'; Ͱ͖ͳ͘ͳΔ ▸ file_get_contents('hoge.php'); Ͱ͖ͳ͘ͳΔ Կ΋Ͱ͖ͳ͍ʂ

΍ͬͯΈΔ $ php -a Interactive shell php > stream_wrapper_unregister('file'); php > echo file_get_contents('hoge.txt'); PHP Warning: file_get_contents(): file:// wrapper is disabled in the server configuration in php shell code on line 1 PHP Stack trace: PHP 1. {main}() php shell code:0 PHP 2. file_get_contents() php shell code:1

STREAMͰ༡Ϳ ωλ2

͝ଘ஌Ͱ͠ΐ͏͔ ফͨ͠stream͸ࣗ࡞൛ʹஔ͖׵͑ΒΕΔ ▸ stream_wrapper_registerؔ਺ ▸ streamWrapperͬΆ͍ΫϥεΛPHPͰ࣮૷ͯ͠ొ࿥ ▸ http://php.net/manual/ja/class.streamwrapper.php stream૚ͰͷϞοΫԽ

finished) { return false; } $this->finished = true; return 'うるせーバーカ'; } function stream_eof() { return $this->finished; } function stream_stat() { return []; } } stream_wrapper_unregister('file'); stream_wrapper_register('file', 'Aori');

php > require 's1.php'; php > require 's1.php'; うるせーバーカ php > require 's'; うるせーバーカ php > echo file_get_contents('hoge'); うるせーバーカ ἤͬͯ͘ΔPHP͕Ͱ͖ͨ

STREAMͷϞοΫԽʂʂͬͯॻ͍͚ͨͲ ▸ requireͱ͔ͷΫϥεಡΈࠐΈ·ͰϞοΫԽ͞ΕͪΌ͏ ▸ ݩͷfile://͕࢖͑ͳ͘ͳΔ ▸ ͭΑ͗ͯ͢໾ʹཱͨͳ͍…

STREAMͰ༡Ϳ ωλ3

PHP PREPROCESSOR

ωλͩͬͨΜͰ͚͢Ͳ ͓୊ ▸ setter/getterΛ୹͘ॻ͖͍ͨ... ▸ ϚδοΫϝιου͸νϟϥ͍͔Βݏ

ϚΫϩͬΆ͍΋ͷΛ࡞Δ ▸ PHPͷίʔυΛు͘PHPͷίʔυΛॻ͘ ▸ 1ճ࣮ߦͨ݁͠ՌΛrequire/file_get_contentsʹ౉͢ ▸ ͱ͍͏ͷΛstreamWrapperͰ࡞Δ

σϞ

STREAM ໘ന͍Αʂ