Use SO's URL format for $_GET

StackOverflow has a very neat, clean URL format. It looks the same as a directory structure, but there can't be a directory for each question on here! My question is this:

How can I get http://www.site.com/sections/tutorials/tutorial1, for example, to stay like that in the address bar, but convert it to a $_GET request for PHP to mess around w开发者_JAVA百科ith?

I could use a .htaccess file, but I don't want the URL being rewritten - I'd like it to remain clean and friendly. Is my only option here to use PHP's string splitting functions to get some pretend $_GET data?

Thanks,

James

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What about this, using .htaccess to split the URL up, the URL won't change but instead point to index.php with various $_GET variables, this could could be increased to cover more URL sections.

# turn rewriting on
RewriteEngine on

# get variables in this order, [object], [object,action], [object,action,selection]
RewriteRule ^([^/\.]+)/?$ /index.php?object=$1 [L,NC,QSA]
RewriteRule ^([^/\.]+)/([^/\.]+)/?$ /index.php?object=$1&action=$2 [L,NC,QSA]
RewriteRule ^([^/\.]+)/([^/\.]+)/([^/\.]+)/?$ /index.php?object=$1&action=$2&selection=$3 [L,NC,QSA]

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A PHP Rest framework could do this for you, so I refer you to this question. Most of the frameworks won't load the data from $_GET, but will offer a similar and equally convenient way to read it.

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It's actually a RESTful way of building your URI's. Not only SO applies this pattern. I recommend to not re-invent the wheel by taking a look at this question.

In addition you could switch over to a RESTful framework such as CakePHP or CodeIgniter, which are configured by default to use the RESTful pattern.

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$_GET does not contain the path compontents from the URL, only the parameters that eventually follow the ?. You could use

$parts = explode('/', pathinfo($_SERVER['REQUEST_URI'], PATHINFO_DIRNAME));
var_dump($parts);

However it seems you should have a read on URL rewriting e.g. with mod_rewrite. "I don't want the URL being rewritten - I'd like it to remain clean and friendly" ... The rewriting happens on the server. The user never sees the "ugly" result.

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If you don't want to use mod rewrite the best solution would be using regular expressions agains the $_SERVER['REQUEST_URI'] variable.

i.e:

preg_match('|/(.*)/(.*)|', $_SERVER['REQUEST_URI'], $match);
$_GET['param1'] = $match[1];
$_GET['param2'] = $match[2];

If you want to setup a capture all php script. IE if the script request doesn't exist use a default script, use mod-rewrite to redirect everything to one script i.e. the zend framework (and most of the PHP MVC framework) use this:

RewriteEngine On
RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]
RewriteRule ^.*$ index.php [NC,L]

I think that could be a bit cumbersome.