regex problem for newbie ranges of numbers

I really should polish up on my regex but for now can anyone help with this...

((2,3,4,11,8),(5,44,67,78,32,22,111,234))

as you can see, each range of numbers is comma separated and, in this example, there are 2 ranges of 开发者_开发问答of numbers.

In a live scenario there could be many numbers and a handful of ranges.

So... how do i extract something like this into a php nested array or something similar?

ANY help appreciated

Use explode() wisely and do it like this:

$ranges = '((2,3,4,11,8),(5,44,67,78,32,22,111,234))';

//break into groups
$array = explode('),(', $ranges);

//trim any parenthesis left and then split by comma ,
foreach($array as &$group)
    $group = explode(',',trim($group, '()'));

//display result
var_dump($array);

This outputs:

array
  0 => 
    array
      0 => string '2' (length=1)
      1 => string '3' (length=1)
      2 => string '4' (length=1)
      3 => string '11' (length=2)
      4 => string '8' (length=1)
  1 => &
    array
      0 => string '5' (length=1)
      1 => string '44' (length=2)
      2 => string '67' (length=2)
      3 => string '78' (length=2)
      4 => string '32' (length=2)
      5 => string '22' (length=2)
      6 => string '111' (length=3)
      7 => string '234' (length=3)

$input = str_replace(array('(', ')'), array('[', ']'), $input);
$output = json_decode($input);

This might work as well