Can someone explain me this coding?

[yoki]

Hi,

I'm trying to read this function taken from Php.net.

function array_key_intersect(&$a, &$b) {
$array = array();
while (list($key,$value) = each($a)) {

//if (isset($b[$key]))
$array[$key] = $value;
}
return $array;
}

Could someone explain the bolded line?

[leatherback]

It basically loops through the array $a (while ... each($a) )
and assigns the key of the array to the var $key, and the value to the variable $value (list($key,$value).

See also the function list at php.net/list

The same thing is achieved with the function foreach()