.htaccess 开启url重写
<IfModule mod_rewrite.c>
RewriteEngine onRewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php/$1 [QSA,PT,L]
</IfModule>
url规则重写举例：
RewriteEngine On
#微信消息页
RewriteRule ^WeChat_([0-9]+)_([0-9]+).php(.*) http://z.studyems.com/WeChat/main.php/wechat/messages/kcid/$1/type/$2/
#首页
RewriteRule ^index.php$ http://www.studyems.com/kaoshi/ [L]
RewriteRule ^\/?$ http://www.studyems.com/kaoshi/ [L]
#搜索页
RewriteRule ^searchindex\/?$ http://www.studyems.com/kaoshi/searchindex\.php [L]
RewriteRule ^search_questions\/?$ http://www.studyems.com/kaoshi/search_questions\.php [L]
#内页搜索页
RewriteRule ^search\/?$ http://www.studyems.com/kaoshi/search\.php [L,QSA]
#文章内页
#kaoshi-content***.html
RewriteRule ^kaoshi-content([0-9]+).html\/?$ http://www.studyems.com/kaoshi/a$1.html [L]
RewriteRule ^kaoshi-content([0-9]+).html\/?([0-9]+)\/?$ http://www.studyems.com/kaoshi/a$1.html/$2/ [L]