[RESOLVED] Array problem

[Exangelus]

Hi All,

I think I have a rather simple problem but I don't know what I'm doing wrong:

	[code=php]
    $old_args = $this->registry->router->arguments();
	foreach($old_args as $arg)
	{
		if($arg != '')
		{
			list($key, $val) = explode('-', $arg, 2);
			$args[$key] = $val;
			echo $args[$key] . '<br>';
		}
	}

	print_r($old_args);
	echo '<br>';
	print_r($args);
	exit;[/code]

Will print this:

entertainment
fietsverhuur
Array ( [0] => faciliteiten-entertainment [1] => faciliteiten-fietsverhuur )
Array ( [faciliteiten] => fietsverhuur )

Edit: I tested it without the if condition aswell but the problem persists.

So basically my problem is that when I fill one array from another I somehow lose one value.

Thanks in advance!

[niroshan]

Hi Exangelus,

The reason behind that is this,

list($key, $val) = explode('-', $arg, 2);
    $args[$key] = $val; 

when the first time you ran the loop it will have the values as,

$args['faciliteiten'] = 'entertainment'; 

so when second time comes you have the same key so instead of adding a new array item simply it will replace the array value.

Hope this is clear.

regards,
Niroshan

[Exangelus]

Aah ofcourse, thanks alot! Knew it had to be a simple problem. Thanks!!

[bradgrafelman]

In other words, array indexes must be unique. Depending upon the application, you could create a multi-dimensional array if duplicates arise, e.g.:

$args[$key] = $val; 

could be replaced with:

if(array_key_exists($key, $args)) {
    if(is_array($args[$key]))
        $args[$key][] = $val;
    else {
        $temp = $args[$key];
        $args[$key] = array($temp, $val);
        unset($temp);
    }
} else
    $args[$key] = $val;

Which would result in arrays like:

Array ( [faciliteiten] => Array ( [0] => entertainment [1] => fietsverhuur ) )

[Exangelus]

I knew indexes always are unique but just didn't thought that was causing the problem.
Before reading your solution I already figured out a other option. After every index I add a dash followed by a increasing integer.
When I read the array I explode it into the useful and non-useful parts.

The thing I'm doing is checking which options have been selected out of a large search menu(search types and options can be changed dynamically) and I got searchtypes with single option or multiple options clickable.
I store the searchquery in an array (and in the seo friendly url) that I need to actually do the search and make new urls for the links in the search menu but with multiple options clickable there will be duplicate keys in the array 😛

Anyhow, thanks for the help and tips!