可以说，我有以下GET变量可用：

lets say i have the following GET variables available:

状态

城市

卧室

浴室

键入

价格

现在我想他们出来是这样的：

now i want them to come out like this:

mysite.com/state/city /＃ - 卧室/＃ - 浴室/类型/价格

mysite.com/state/city/#-bedrooms/#-bathrooms/type/price

不过，我想这个工作，这样，如果这些变量之一是不存在，它仍然会正常工作

however, i want this to work so that if one of these variables are not there, it will still work

即：

mysite.com/state/city /＃ - 卧室

mysite.com/state/city/#-bedrooms

或

mysite.com/state /＃ - 卧室/价格

mysite.com/state/#-bedrooms/price

我如何做到这一点？

推荐答案

您可以使用？量词正则表达式的可选配件。

You can make parts of a regex optional using the ? quantifier.

            # state   city       bedrooms              bathrooms
RewriteRule ^(w+)(?:/(w+))?(?:/(d+)-bedrooms)?(?:/(d+)-bathrooms)?$
            script.php?state=$1&city=$2&bedrooms=$3&bathrooms=$4
# add further (?:(d+)-placeholders)? for the other optional parts

然而，这将改写空变量，如果一个子模式不匹配。

This will however rewrite to empty variables if a subpattern is not matched.

因此​​，也许你应该宁可定义列表中的规则集具有不同specificness的的：

So maybe you should rather define a list of RewriteRules with varying specificness:

RewriteRule ^(w+)/(d+)-bedrooms$ scr?state=$1&bed=$2
RewriteRule ^(w+)/(w+)/(d+)-bedrooms$ scr?state=$1&city=$2&bed=$3
...