Manage URL routes in own php framework

Question

I\'m creating a PHP Framework and I have some doubts...

The framework takes the url in this way: http:/web.com/site/index

It takes the first paramet

Answer 1

Yes, I think I know how to fix that.

(Disclaimer: I know that you know most of this but I am going to explain everything for others who may not know some of the gotchas)

Using PATH_INFO and .htaccess

There is a trick in php where if you go to a path like:

http://web.com/mysubfolder/index.php/controller/action

you will get "/controller/action" in the $_SERVER['PATH_INFO'] variable

Now what you need to do is take a .htaccess file (or equivalent) and make it tell your php script the current folder depth.

To do this, put the .htaccess file into the "mysubfolder"

mysubfolder
    .htaccess
    index.php

.htaccess should contain:

RewriteEngine on

# if a directory or a file exists, use it directly
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

# otherwise forward it to index.php
RewriteRule (.*) index.php/$1

(I used the yii framework manual as reference, I also recommend using the html5 boilerplate)

Basically you set it up to redirect everything to index.php at a specific point in the url.

Now if you visit: http://web.com/mysubfolder/index.php/controller/action

Now you can get the right path "/controller/action" from $_SERVER['PATH_INFO']

Except it's not going to have any value if you visit http://web.com/mysubfolder/ because the .htaccess file will ignore the rewrite because the http://web.com/mysubfolder/ path requests the mysubfolder/index.php which actually exists and gets denied thank yo RewriteCond %{REQUEST_FILENAME} !-f.

ifsetor function

For this you can use this super handy function called ifsetor (I don't remember where I got it)

function ifsetor(&$variable, $default = null) {
    return isset($variable)? $variable: $default;
}

What it does is take a reference to a variable that might or might not exist and provide a default if it does not exist without throwing any notices or errors

Now you can use it to take the PATH_INFO variable safely like so

In your index.php

function ifsetor(&$variable, $default = null) {
    return isset($variable)? $variable: $default;
}
$path = ifsetor($_SERVER['PATH_INFO'],'/');
var_dump($path);

php 5.4 also has this new shorter ternary format which you can use if you don't care about notices (I do)

$path = $_SERVER['PATH_INFO']?:'/';

Handling the QUERY_STRING

Now tecnically you are not getting a URL, it is merely its path part and will not contain the query_string, for example when visiting

http://web.com/mysubfolder/index.php/test?param=val

you will only get '/test' in the $path variable, to get the query string use the $_SERVER['QUERY_STRING'] variable

index.php

function ifsetor(&$variable, $default = null) {
    return isset($variable)? $variable: $default;
}
$path = ifsetor($_SERVER['PATH_INFO'],'/');
$fullpath = ($_SERVER['QUERY_STRING'])? $path.'?'.$_SERVER['QUERY_STRING']:$path;
var_dump($fullpath);

But that might depend on your needs

$_SERVER['QUERY_STRING'] vs $_GET

Also keep in mind that the $_SERVER['QUERY_STRING'] variable is different from the $_GET and $_REQUEST variables because it keeps duplicate parameters from the query string, for example:

Visiting this page

http://web.com/mysubfolder/controller/action?foo=1&foo=2&foo=3

if going to give you a $_SERVER['QUERY_STRING'] that looks like

?foo=1&foo=2&foo=3

While the $_GET variable is going to be an array like this:

array(
    'foo'=>'3'
);

If you don't have .htaccess

You can try using the SCRIPT_NAME to your advantage

list($url) = explode('?',$_SERVER['REQUEST_URI']);
list($basepath) = explode('index.php',$_SERVER['SCRIPT_NAME']);
$url = substr($url,strlen($basepath));

If you like to blow up stuff like me :)

Your case

Class Route
{
private $_htaccess = TRUE;
private $_suffix = ".jsp";

public function params()
{
    $url='';

    //nombre del directorio actual del script ejecutandose.
    //basename(dirname($_SERVER['SCRIPT_FILENAME']));

    if($this->_htaccess !== FALSE):
        //no está funcionando bien si está en un subdirectorio web, por ej stynat.dyndns.org/subdir/
        // muestra el "subdir" como primer parámetro
        list($url) = explode('?',$_SERVER['REQUEST_URI']);
        $basepath = dirname($_SERVER['SCRIPT_NAME']);
        $basepath = ($basepath==='/')? $basepath: $basepath.'/';
        $url = substr($url,strlen($basepath));
    else:
        if(isset($_SERVER['PATH_INFO'])):
            $url = $_SERVER['PATH_INFO'];
            $url = preg_replace('|^/|','',$url);
        endif;
    endif;

    $url = explode('/',$url);
    var_dump($url);

    var_dump($_GET);


}
}

I hope this helps

P.S. Sorry for the late reply :(