mod_rewrite规则

Question

What rule translates urls like so?

host.com/plastic_toys/pink_barbie/
host.com/index.php?q=plastic+toys+pink+barbie

The number of components in the category and product name vary.

Edit:

I guess this rule does part of the job:

RewriteRule ^([^/]*)/([^/]*)$ /index.php?q=$1+$2 [L]

The problem with the above rule is that it does not take care of converting underscores to + , so it translates like this:

host.com/plastic_toys/pink_barbie/
host.com/index.php?q=plastic_toys+pink_barbie

I guess I have to delegate that conversion to PHP. Now is there a way to test if the rule actually does the conversion the way I imagine it would?

Answer 1

Is there a reason (existing code, etc) that you need to do this totally as a rewrite?

Normally, I do

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]

and then parse $_GET["q"] or even just parse $_SERVER["REQUEST_URI"] directly. preg_match() is your friend here.

It takes way less time to use one of these two methods than it does trying to come up with a weird rewrite.

Answer 2

First - I would suggest using the following rules:

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([a-zA-Z_]+)/([a-zA-Z_]+)/?$ /index.php?q1=$1&q2=$2 [L,QSA]

The RewriteCond each check that a valid file or directory does not exist (for instance if you want to have a static /help.html and it exists, or /FAQ/index.php and it exists then the RewriteRule will not fire.

I've split out the parameters into 2 items - so you can treat them as separate parameters (if you want to treat it as 1 parameter just change it to /index.php?q=$1-$2 or some other separator that you want - I would say do not use + since you want to parse off that character anyway).

Answer 3

Nothing. How would a rule know where to draw the line between a category and product. What if the query had 3 parameters. Are the first two the category and the last the product or is the first the category and the last two the product.