Question

This is for an osCommerce contribution called
(“Automatically add multiple products with attribute to cart from external source”)

This existing code uses sscanf to ‘explode’ a string that represents a
– product ID,
– a productOption,

– and quantity:

sscanf('28{8}17[1]', '%d{%d}%d[%f]', 
  $productID,                       // 28
  $productOptionID, $optionValueID, //{8}17 <--- Product Options!!!
  $productQuantity                  //[1]
);

This works great if there is only 1 ‘set’ of Product Options (e.g. {8}17).

But this procedure needs to be adapted so that it can handle multiple Product Options, and put them into an array, e.g.:

'28{8}17{7}15{9}19[1]' //array(8=>17, 7=>15, 9=>19)
OR
'28{8}17{7}15[1]'      //array(8=>17, 7=>15)
OR
'28{8}17[1]'           //array(8=>17)

Thanks in advance. (I’m a pascal programmer)

Answer 1

Maybe regular expressions may be interesting

$a = '28{8}17{7}15{9}19[1]';
$matches = null;
preg_match_all('~\\{[0-9]{1,3}\\}[0-9]{1,3}~', $a, $matches);

To get the other things

$id = (int) $a; // ;)
$quantity = substr($a, strrpos($a, '[')+ 1, -1);

According the comment a little update

$a = '28{8}17{7}15{9}19[1]';
$matches = null;
preg_match_all('~\\{([0-9]{1,3})\\}([0-9]{1,3})~', $a, $matches, PREG_SET_ORDER);
$result = array();
foreach ($matches as $entry) {
  $result[$entry[1]] = $entry[2];
}