Question

How can I target a multi-dimensional associative array by index? I need to be able to do something along the lines of this…

$x=2;

$assoc_array = array(
"red" => array(1,2,3,4,5),
"green" => array(1,2,3,4,5),
"blue" => array(1,2,3,4,5)
);

array_push($assoc_array[$x],6);

Answer 1

You actually can do that. As an alternative, you can use $assoc_array[$x][] = 6

EDIT: The above is the answer for what you asked. The code below is for what I think you need, but didn’t state clearly:

$x = 2;
$keys = array_keys($assoc_array);
var_dump($assoc_array[$keys[$x]]);

Working codepad example: http://codepad.org/QXfHmKH8