htaccess variable variables

Question

I've made an php script that builds an image and I want to use htaccess for a nice url

The script builds an image depending on some variables:

for example:

All options given
php url:  image.php?width=300&height=400&color=red&var1=something&var2=somethingelse
nice url: image-w300-h400-cred-v1something-v2something.png

Few options given
php url:  image.php?var1=something&color=black
nice url: image-v1something-cblack.png

I know how to build a rewriteRule for every combination but isn't there a way to automate that?

deceze · Accepted Answer · 2012-08-07 08:40:13Z

4

Probably the simplest solution:

RewriteRule ^image-(.+)\.png$ image.php?params=$1

Then parse $_GET['params'] in PHP.

answered Aug 7, 2012 at 8:40

deceze♦

525k89 gold badges807 silver badges954 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Gijs Over a year ago

then it's all in one parameter, what is the best way to split them up again?

deceze Over a year ago

explode('-', $_GET['params']), then parse each individual parameter according to whatever rules you think up.

deceze Over a year ago

I'd think that is the easiest, or at least the most maintainable, solution.

Gijs · Accepted Answer · 2012-08-08 08:47:06Z

1

If you always put your params in the same order, you can use this kind of rule :

RewriteRule 
    ^image(-w[0-9]+)?(-h[0-9]+)?(-c[a-z]+)?(-v1[A-Za-z0-9-]+)?(-v2[A-Za-z0-9-]+)?\.png$ 
    image.php?width=$1&height=$2&color=$3&var1=$4&var2=$5 [L]

EDIT :

RewriteRule 
    ^image(-w([0-9]+))?(-h([0-9]+))?(-c([a-z]+))?(-v1([A-Za-z0-9-]+))?(-v2([A-Za-z0-9-]+))?\.png$ 
    image.php?width=$2&height=$4&color=$6&var1=$8&var2=$10 [L]

EDIT 2 to prevent $10 problem :

RewriteRule 
    ^image(?:-w([0-9]+))?(?:-h([0-9]+))?(?:-c([a-z]+))?(?:-v1([A-Za-z0-9-]+))?(?:-v2([A-Za-z0-9-]+))?\.png$ 
    image.php?width=$1&height=$2&color=$3&var1=$4&var2=$5 [L]

edited Aug 8, 2012 at 8:47

Gijs

2,08216 silver badges22 bronze badges

answered Aug 7, 2012 at 8:51

zessx

68.9k29 gold badges139 silver badges166 bronze badges

4 Comments

Gijs Over a year ago

This looks like what i'm searching for but the variables contain the prefixes for example width=-w200, it should be width=200

deceze Over a year ago

The problem with this is that you'll have to supply the arguments in the exact order or it won't match. That's not necessarily hard, but query parameters should not depend on a particular order. Also, this is pretty hard to maintain if you keep adding/changing parameters.

zessx Over a year ago

@deceze I agree, that's a constraint, but for SEO needs, you should never have two differents urls for the same page, then use ordered params seems to be a good practice.

Gijs Over a year ago

$10 does not work because $10 will be $1 and 0 for example $1 = black then $10 becomes black0, i will edit your post for the solution

Collectives™ on Stack Overflow

htaccess variable variables

2 Answers 2

3 Comments

4 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

3 Comments

4 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related