Question

He stackoverflow,

Today I am busy with an function witch get’s all the elements with specific name. Now I have one problem creating this function. The specific name’s are dynamic, so there can be: “conf_1=data&conf_2=data” but also: “conf_1=data&conf_2=data&conf_3=data”

Some code to enlighten you,

foreach($_GET as $key => $value) {
  $a++;
  if (strpos($key, "conf_$a") === 0) {
    $conf[$key] = $value;
  }
}

So lets say we have this URL,

naam=name&dom=domain&id=41&conf_1=data&conf_2=data&conf_3=data&this_1=data&this_2=opt1

Now I am trying to get all the conf elements with the foreach loop but I need the $a parameter to be the 1,2 en 3 numbers. And when I try to take all the this elements $a shut give 1 en 2.

How can I declare that or how can I do this with an different loop. The next step is of-course to put the elements into an array like this:

 $conf = Array
        (
            [1] => data
            [2] => data
            [3] => data
        )

 $this = Array
        (
            [1] => data
            [2] => data
        )

It is important that the numbering is not done automatically. The number in the array shut be the number in the name of the element. Basically conf_1=data has to become [1] => data

I understand that there are multiple ways to do this but I don’ t know witch are the best and the fastest ways. The way I am doing it now is complete wrong:

for($a = 0; $a < 99; $a++){
    // Get all the data
    $conf = array();
    foreach($_GET as $key => $value) {
        if (strpos($key, "conf_$a") === 0) {
            $conf[$key] = $value;
        }
    }

    $finalconf = array();
    //order all data
    $finalconf[$a] = $conf['conf_' . $a];               

    print_r ($conf);
    print_r ($finalconf);
}

Answer 1

You can try

$list = array();
foreach($_GET as $key => $data)
{
    (strpos($key,"conf_") === 0) AND $list[ltrim(strstr($key,"_"),"_")] = $data ;
}
var_dump($list);

Output

array
  1 => string 'data' (length=4)
  2 => string 'data' (length=4)
  3 => string 'data' (length=4)