Make a router like zend - php

Question

I have a url http://*.com/branch/module/view/id/1/cat/2/etc/3.
It becomes.
array
(
'module'=>'branch',
'controller'=>'module',
'action'=>'view'
);
next I need to get the params.
Ihave this array.
/*function getNextSegments($n,$segments) {
return array_slice ( $q = $this->segments, $n + 1 );
}
$params = getNextSegments(3);
*/
array ( 0 => 'id', 1 => '1', 2 => 'cat', 3 => '2', 4 => 'etc', 5 => '3' );//params
And i wanna convert it to this one:
array
(
'id'=>1,
'cat'=>2,
'etc'=>3,
);
How i can do this using php function. I know I can do using for or foreach, but I think php has such function , but i cant find it :(.
Thank you.
class A {
protected function combine($params) {
$count = count ( $params );
$returnArray = array ();
for($i = 0; $i < $count; $i += 2) {
$g = $i % 2;
if ($g == 0 or $g > 0) {
if (isset ( $params [$i] ) and isset ( $params [$i + 1] ))
$returnArray [$params [$i]] = $params [$i + 1];
}
}
return $returnArray;
}
}
This works normaly. If anybody has better logic for this please help.
Thank you again.

Answer 1

PHP does not have a built-in function for this. I would just implement it with explode and a loop, shouldn't be that hard.

Answer 2

I use a function like this in my extended Zend_Controller_Action class.
public function getCleanParams()
{
$removeElements = array(
'module' => '',
'controller' => '',
'action' => '',
'_dc' => ''
);
return array_diff_key($this->_request->getParams(), $removeElements);
}
That will give you your parameters in a clean fashion and the format you want it in.

Answer 3

You can start building your router with the following regular expression (name the file index.php):
<?php
$pattern = '#^(?P<module>branch)/'.
'(?P<controller>module)/'.
'(?P<action>view)'.
'(:?/id[s]?/(?P<id>[0-9]+))?'.
'(:?/cat[s]?/(?P<cat>[0-9]+))?'.
'(:?/etc[s]?/(?P<etc>[0-9]+))?#ui';
preg_match($pattern, trim($_SERVER['REQUEST_URI'], '/'), $segment);
echo sprintf('<pre>%s</pre>', var_export($segment, true));
Assuming you have PHP 5.4.x installed, you can type the following on the command-line:
% php -S localhost:8765
Now browse to http://localhost:8765/branch/module/view/id/1/cat/2/etc/3
The output will be (removed numeric keys except 0 for clarity):
array (
0 => 'branch/module/view/id/1/cat/2/etc/3',
'module' => 'branch',
'controller' => 'module',
'action' => 'view',
'id' => '1',
'cat' => '2',
'etc' => '3',
)