我已经阅读了这篇文章，但它并没有回答我的问题。
这是我的情况：我一直在开发自己的框架，其中包括多语言、模板等功能。但我面临一个问题：多语言和模板处理是用Php完成的，有800行代码，需要分析主机以确定要查找哪个模板等等。这很混乱，而且我相信它不够高效，尽管我没有测试过它的效率。它涉及到很多数组（如array_push()、array_key_exists()等）。
我已经重写了整个Php文件，现在它创建自己的“缓存”文件，并且几乎所有的工作都是由Apache在进入Php文件之前完成的。Php文件只分析_GET中的内容。
但我担心一件事：正则表达式快吗？在我以前的Php文件中，我经常使用array_xx()函数，但在此之前绝对没有任何Apache RewriteRules。
我不知道正则表达式的性能，也不知道Apache RewriteRules和初始化环境变量所需的时间。我经常这样做（见下文）。因此，也许在这些解释之后，有人可以告诉我：“没问题，你的正则表达式不复杂，Apache可以快速处理”，或者“立即停止这样做，你可能会遇到正则表达式的问题”等等。
这是关于“Apache RegExp RewriteRules”和“Php处理URL而不是Apache”的性能方面的建议和警告。
以下是所有的RewriteRule，我只是想知道它们是否会使我的Apache Web服务器变慢，比我的以前的Php文件更慢。
RewriteMap maprns dbm:/rns.map
RewriteMap mapdps dbm:/dps.map
RewriteMap mapcts dbm:/cts.map
RewriteMap ts dbm:/ts.map
RewriteRule /404.php - [QSA,E=PLOCAL:${ts:www\.}]
RewriteCond %{ENV:PLOCAL} ^default\.([a-zA-Z0-9\-]+)\.$
RewriteRule /404.php - [QSA,E=L:%1,E=PLOCAL:${ts:%1\.}]
RewriteCond %{ENV:PLOCAL} !^$
RewriteCond %{HTTP_HOST} ([a-zA-Z0-9\-]+\.)+([a-zA-Z0-9\-]+)\.+(fr|com|net|org|eu)$
RewriteRule (.*) /404.php?L=%{ENV:L}&Pt=%{ENV:PLOCAL}&Pt_cm=${ts:cm.}&h_static=%{ENV:L}.s.%2.%3 [QSA,L]
RewriteCond %{HTTP_HOST} ((([a-zA-Z0-9\-]+)\.)+)(s|static)\.(([a-zA-Z0-9\-]+\.)+)([a-zA-Z0-9\-]+)\.+(fr|com|net|org|eu)$
RewriteRule (.*) - [QSA,E=L:%3,E=PLOCAL:${ts:%1%5|notfound},E=Pcm:${ts:cm.%5},E=STATIC:1]
RewriteCond %{ENV:PLOCAL} ^$
RewriteCond %{HTTP_HOST} ((([a-zA-Z0-9\-]+)\.)+)(s|static)\.([a-zA-Z0-9\-]+)\.+(fr|com|net|org|eu)$
RewriteRule (.*) - [QSA,E=L:%3,E=PLOCAL:${ts:%1|notfound},E=Pcm:${ts:cm.},E=STATIC:1]
RewriteCond %{ENV:PLOCAL} ^$
RewriteCond %{HTTP_HOST} (([a-zA-Z0-9\-]+)\.)((([a-zA-Z0-9\-]+)\.)+)([a-zA-Z0-9\-]+)\.+(fr|com|net|org|eu)$
RewriteRule (.*) - [QSA,E=L:%2,E=PLOCAL:${ts:%1%3|notfound},E=Pcm:${ts:cm.%3}]
RewriteCond %{ENV:PLOCAL} ^$
RewriteCond %{HTTP_HOST} (([a-zA-Z0-9\-]+)\.)([a-zA-Z0-9\-]+)\.+(fr|com|net|org|eu)$
RewriteRule (.*) - [QSA,E=L:%2,E=PLOCAL:${ts:%1|notfound},E=Pcm:${ts:cm.}]
RewriteCond %{ENV:PLOCAL} ^default\.([a-zA-Z0-9\-]+)\.(([a-zA-Z0-9\-]+\.)+)
RewriteRule (.*) - [QSA,E=L:%1,E=PLOCAL:${ts:%1\.%2|notfound},E=Pcm:${ts:cm.%2}]
RewriteCond %{ENV:PLOCAL} ^default\.([a-zA-Z0-9\-]+)\.$
RewriteRule (.*) - [QSA,E=L:%1,E=PLOCAL:${ts:%1\.|notfound},E=Pcm:${ts:cm.}]
RewriteCond %{ENV:PLOCAL} ^$ [OR]
RewriteCond %{ENV:PLOCAL} notfound
RewriteRule .* - [R=404,L]
RewriteRule (.*) $1?L=%{ENV:L}&Plocal=%{ENV:PLOCAL}&Pcm=%{ENV:Pcm} [QSA]
RewriteCond %{ENV:STATIC} !^$
RewriteRule (.*)(\.(css|js|pdf|jpg|jpeg|gif|png)){1}$ $1$2 [QSA,E=EXT:$3]
RewriteCond %{ENV:EXT} (jpg|jpeg|gif|png)
RewriteRule (.*) - [QSA,E=EXT:img]
RewriteCond %{ENV:STATIC} !^$
RewriteCond %{ENV:EXT} !([a-z]+)
RewriteRule .* - [L,R=404]
RewriteCond %{ENV:STATIC} !^$
RewriteCond %{ENV:EXT} (css|js)$
RewriteRule (.*) /%1.php?%1=$1&static=1 [QSA,L]
RewriteCond %{ENV:STATIC} !^$
RewriteCond %{DOCUMENT_ROOT}/%{ENV:PLOCAL}/%{ENV:EXT}%{REQUEST_FILENAME} -f
RewriteRule ^(.+) %{DOCUMENT_ROOT}/%{ENV:PLOCAL}/%{ENV:EXT}%{REQUEST_FILENAME} [QSA,L]
RewriteCond %{ENV:STATIC} !^$
RewriteCond %{DOCUMENT_ROOT}/%{ENV:Pcm}/%{ENV:EXT}%{REQUEST_FILENAME} -f
RewriteRule ^(.+) %{DOCUMENT_ROOT}/%{ENV:Pcm}/%{ENV:EXT}%{REQUEST_FILENAME} [QSA,L]
RewriteCond %{ENV:STATIC} !^$
RewriteRule .* - [L,R=404]
RewriteRule ^/$ /index.php [QSA,L]
RewriteRule /d-envoyer-lte-par-mail/ /d_envoyer_lte_par_mail.php [QSA,L]
RewriteRule /d-creer-editer/ /d_creer_editer.php [QSA,L]
RewriteRule /d-mail-ver/(.*)/$ /d_mail_ver.php?chaine_vation=$1 [QSA,L]
RewriteRule /d-mail-ver/ /d_mail_ver.php [QSA,L]
RewriteRule /i/lg/$ /i/lg.php [QSA,L]
RewriteRule /i/lg-ver/$ /i/lg_ver.php [QSA,L]
RewriteCond %{HTTP_HOST} ^s\.(.*) [NC]
RewriteRule /contact-([0-9]+)-([0-9]+)-([a-z0-9]+)\.png$ /d_image_telephone.php?no=$1&id=$2&chaine_vation=$3 [QSA,L]
RewriteCond %{HTTP_HOST} ^www\.(.*) [NC]
RewriteRule /d-contact/numero-([0-9]+)-([a-z0-9]+)/$ /d_message.php?id=$1&chaine_vation=$2 [QSA,L]
RewriteRule ^/d-(dtl|ann)/offre/(.*)/$ /d-$1/$2/$3?d_type=1 [QSA,NC]
RewriteRule ^/d-(dtl|ann)/demande/(.*)/$ /d-$1/$2/$3?d_type=2 [QSA,NC]
RewriteRule ^/d-dtl/(.*)/numero-([0-9]+)/$ /d-dtl/?val_ct=$1&id=$2 [QSA,NC,E=ct:${mapcts:$1|notfound}]
RewriteRule ^/d-ann/(.*)/numero-([0-9]+)-([a-z0-9]+)/$ /d-ann/?val_ct=$1&id=$2&chaine_ann=$3 [QSA,NC,E=ct:${mapcts:$1|notfound}]
RewriteCond %{ENV:ct} ([0-9]+)
RewriteRule /d-(dtl|ann)/ /d_$1.php?ct=%{ENV:ct} [QSA,NC,L]
RewriteRule ^/d/offres/(rn|dp|ct)/(.*)/$ /d/$1/$2/?d_type=1 [QSA,NC]
RewriteRule ^/d/demandes/(rn|dp|ct)/(.*)/$ /d/$1/$2/?d_type=2 [QSA,NC]
RewriteRule ^/d/(.*)/d-([0-9]+)-a-([0-9]+)/$ /d/$1/$2/?start=$3&end=$4 [QSA,NC]
RewriteRule ^/d/rn/([a-z\-\_0-9]+)/(.*)/$ /d/$2/?val_rn=$1 [QSA,NC,E=rn:${maprns:$1|notfound}]
RewriteRule ^/d/rn/(.*)/$ /d/?val_rn=$1 [QSA,NC,E=rn:${maprns:$1|notfound}]
RewriteRule ^/d/dp/(.*)/$ /d/?val_dp=$1 [QSA,NC,E=dp:${mapdps:$1|notfound}]
RewriteRule ^/d/ct/(.*)/$ /d/?val_ct=$1 [QSA,NC,E=ct:${mapcts:$1|notfound}]
RewriteCond %{ENV:rn} notfound [OR]
RewriteCond %{ENV:dp} notfound [OR]
RewriteCond %{ENV:ct} notfound
RewriteRule .* - [L,R=404]
RewriteCond %{SCRIPT_FILENAME} /d/
RewriteCond %{QUERY_STRING} !start=(.+)
RewriteRule (.*) $1?start=1 [NC,QSA]
RewriteCond %{SCRIPT_FILENAME} /d/
RewriteCond %{QUERY_STRING} !end=(.+)
RewriteRule (.*) $1?end=20 [NC,QSA]
RewriteCond %{ENV:rn} ([0-9]+) [OR]
RewriteCond %{ENV:dp} ([0-9]+) [OR]
RewriteCond %{ENV:ct} ([0-9]+)
RewriteRule /d/ /d_lte.php?rn=%{ENV:rn}&dp=%{ENV:dp}&ct=%{ENV:ct} [QSA,L]
RewriteRule .* - [L,R=404]
mod_rewrite还是PHP）都不稳定且有效。 - KingCrunch