正如arkascha所评论的，您的$2没有定义。我将提出两种方法：
我需要从这个地址
something.com/index.php?page=blog_single&id_blog=15&name=friendly-url-the-name-of-the-article
至
something.com/friendly-url-the-name-of-the-article
我尝试使用htaccess：
RewriteRule ^([w-]+)/?$ index.php?page=blog_single&id_blog=$1&name=$2 [L]
但它没有按预期工作，你能帮我吗？
- id_blog固定为15:
# here $1 is friendly-url-the-name-of-the-article:
RewriteRule ^([w-]+)/?$ index.php?page=blog_single&id_blog=15&name=$1 [L]
它做这个
something.com/friendly-url-the-name-of-the-article=>
something.com/index.php？page=blog_single&id_blog＝15&name＝友好的url文章的名称
- id_blog是可变的：
# here $1 is id_blog, $2 is friendly-url-the-name-of-the-article:
RewriteRule ^([0-9]+)/([w-]+)/?$ index.php?page=blog_single&id_blog=$1&name=$2 [L]
它做这个
something.com/15/friendly-url-the-name-of-the-article=>
something.com/index.php？page=blog_single&id_blog＝15&name＝友好的url文章的名称