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