在URL中传递多个参数的可能性？

Question

I'm working on a search-based website, and am trying to pass parameters using SEO-friendly URLs.

Is it possible to pass the following URL and get the URL in CodeIgniter?

http://www.example.com/search/prize/10/13/14.5/size/xl/2xl/color/black/white-grey/

I am able to create the URL, but I want to get the URL values like $prize = array("10","13","14.5"), $size= array("xl","2xl"), and $color = array("black","white-grey").

I tried to use the uri_to_assoc() function, but it didn't work. I get the following output:

[price] => 10,
[13] => 14.5
...

which is wrong.

Note: I tried to use $this->uri->segment(1), etc., but in this case, the segment position is dynamic.

For example, users may search for only prices of $10, so the URL will get changed to:

http://www.example.com/search/prize/10/size/xl/2xl/color/black/white-grey/

Now the segment position of getting the size must be changed. In this case, I want:

$prize = array("10");
$size = array("xl", "2xl");
$color = array("black", "white-grey");

How can I achieve this?

Answer 1

You are using quite the unconventional "friendly URI" format. Normally when passing parameters there is a single identifier and then the parameter e.g. /name/key/name/key/name/key.

When you use the correct format /name/key/name/key/name/key in conjunction with uri_to_assoc(), you would get:

array(
    'name' => 'key',
    // etc...
)

but using something like /prize/1/2/3/size/s/m/l/color/black/white/grey would yield:

array(
    'prize' => 1,
    2 => 3,
    'size' => 's',
    'm' => 'l',
    // etc...
)

Which is useless to you.

You will have to fetch all of the segments individually and build your arrays with a foreach:

$segments = $this->uri->segment_array();
$prize = array();
$size = array();
$color = array();
$curKey = '';
foreach ($segments as $seg) {
    if (in_array($seg, array('prize', 'size', 'color'))) {
        $curKey = $seg; continue;
    }
    if (!empty($curKey)) ${$curKey}[] = $seg;
}

// use $prize, $size, and $color as you wish

or alternatively using a multi-dimensional array:

$parameters = array(
    'prize' => array(),
    'size' => array(),
    'color' => array(),
);
$segments = $this->uri->segment_array();
$curKey = '';
foreach ($segments as $seg) {
    if (in_array($seg, array('prize', 'size', 'color'))) {
        $curKey = $seg; continue;
    }
    if (!empty($curKey)) $parameters[$curKey][] = $seg;
}