如何制作虚拟目录？
http://wiki.answers.com/Q/What_do_the_abbreviations_mean_on_an_ultrasound_scan
在上面的网址中，它看起来像“ What_do_the_abbreviations_mean_on_an_ultrasound_scan”是一个目录！但我认为它是一个虚拟目录！
我想了解这个东西！！如何做这些事情以及它们的名称？？？
http://wiki.answers.com/Q/What_do_the_abbreviations_mean_on_an_ultrasound_scan
In above url, it looks like "What_do_the_abbreviations_mean_on_an_ultrasound_scan" is a directory!! but i think its a virtual directory !!
I want to know about this stuff !! how to do these things and what they call ???
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他们很可能使用 mod_rewrite 来重写 URL。 StackOverflow 上 mod_rewrite 的 tag wiki 是一个很好的资源。
mod_rewrite 的规则存储在 .htaccess 文件中，看起来像这样：
这会将所有与以
/Q/开头的 url 匹配的请求重写为answers.php，并提供后面的内容 (在本例中，What_do_the_abbreviations_mean_on_an_ultrasound_scan）作为 GET 参数。如果运行 PHP，则可以在脚本中通过$_GET['slug']访问该内容。They are most probably using mod_rewrite to rewrite the url. A good resource is the tag wiki for mod_rewrite here on StackOverflow.
The rules for mod_rewrite is stored in the .htaccess file, and looks something like this:
This would rewrite all requests whitch match a url starting with
/Q/to answers.php, and provide whatever is after (in this caseWhat_do_the_abbreviations_mean_on_an_ultrasound_scan) as a GET parameter. This would be accessible in the script as$_GET['slug']if they were running PHP.