如何从带有大括号的字符串中提取数字？

Question

I have a test string which is something like this:

digit{digit}digit

I want to break this string into 3 variables. For example, 40{1}2 should be split into 40 1 2. The string could be as big as 2034{345}1245. I assume regex would be the best way to split this string.

Here's what I have so far:

$productID = preg_match('/(.*?){/', $product);
$productOptionID = preg_match('/{(.*?)}/', $product);
$optionValueID = preg_match('/}(.*?)/', $product);

Answer 1

No need for regular expressions here:

$str = '40{1}2';

sscanf($str, '%d{%d}%d', $part_1, $part_2, $part_3);
// $part_1 would equal: 40
// $part_2 would equal: 1
// $part_3 would equal: 2

With this method, the variables are already typecast to integers.