Arrays.php

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<?php
namespace SimpleSAML\Utils;

class Arrays
{

    public static function arrayize($data, $index = 0)
    {
        return (is_array($data)) ? $data : array($index => $data);
    }


    public static function transpose($array)
    {
        if (!is_array($array)) {
            return false;
        }

        $ret = array();
        foreach ($array as $k1 => $a2) {
            if (!is_array($a2)) {
                return false;
            }

            foreach ($a2 as $k2 => $v) {
                if (!array_key_exists($k2, $ret)) {
                    $ret[$k2] = array();
                }
                $ret[$k2][$k1] = $v;
            }
        }
        return $ret;
    }
}