Question

Does anyone know how to sort an associative array into alternating largest smallest values?

I.E.

array("A"=>10, "B"=>2, "C"=>5, "D"=>1, "E"=>30, "F"=>1, "G"=>7)

Should become:

array("E"=>30, "D"=>1, "A"=>10, "F"=>1, "G"=>7, "B"=>2, "C"=>5)

Thanks

Answer 1

Based on the answer to your previous version of this question:

$myArray = array("A"=>10, "B"=>2, "C"=>5, "D"=>1, "E"=>30, "F"=>1, "G"=>7);
asort($myArray);
$myArrayKeys = array_keys($myArray);

$newArray = array();
while (!empty($myArray)) {
    $newArray[array_shift($myArrayKeys)] = array_shift($myArray);
    if (!empty($myArray))
        $newArray[array_pop($myArrayKeys)] = array_pop($myArray);
}
var_dump($newArray);

or, if you want largest first:

$myArray = array("A"=>10, "B"=>2, "C"=>5, "D"=>1, "E"=>30, "F"=>1, "G"=>7);
asort($myArray);
$myArrayKeys = array_keys($myArray);

$newArray = array();
while (!empty($myArray)) {
    $newArray[array_pop($myArrayKeys)] = array_pop($myArray);
    if (!empty($myArray))
        $newArray[array_shift($myArrayKeys)] = array_shift($myArray);
}
var_dump($newArray);