RewriteRule ^olddomain.php?cat=39$ http://www.newdomain.com/firstdir/seconddir/? [R=301,NC]
RewriteRule ^olddomain.php\?cat\=39$ http://www.newdomain.com/firstdir/seconddir/? [R=301,NC]
RewriteRule ^olddomain.php?cat\=39$ http://www.newdomain.com/firstdir/seconddir/? [R=301,NC]
RewriteRule ^olddomain.php\?cat=39$ http://www.newdomain.com/firstdir/seconddir/? [R=301,NC]
他们为什么工作???我认为这个问题与第一个问号、第一个等号或数字“39”有关……哈哈