Array problem

[bizshop]

Problem reading a variable containing a list of numbers into an array. I have the following stored as a variable

$a='2,4,6,8';

// If I do
$b=array(2,4,6,8);
echo "$b[2]"; // returns 6

// but
$c=array($a);
echo "$c[2]"; // returns nothing ????

$a would be a varying number of integers in nonconsecutive order, stored in a db. I need to pull that into an array and be able to select one.

[junebug]

$a = '2,4,6,8';
$b = explode(",", $a);

[Anon]

$b=array(2,4,6,8); is actually

$b=array(
"0" => "2",
"1" => "4",
"2" => "6",
"3" => "8",);

so when echo $c[2] means echo the index of the array number "2", but not the value 2.

[Anon]

$a = array(1,2,3);
$c = array($a);

echo 'c[0][2] = ' . $c[0][2];

would putput:

'c[0][2] = 3'