Find strings between {} using regex?

[samvb]

Hey All,

I have a string that contains substrings in following fashion:

abc 1235 {X} sdsdf {Y} ddielf {JP}....

I want to store all those strings between {} so above would return an array/CSV X,Y,JP.
the following finds the very first occurence only. Any idea on how to make it searcj a;;

$str = 'a {A} 90';
 
$start = '{';
$end = '}';
 
$pattern = sprintf(
    '/@\[(\d+):\d+:([^\]]+)\]/',
    preg_quote($start, '/'), preg_quote($end, '/')
);
 
if (preg_match($pattern, $str, $matches)) {
    list(, $match) = $matches;
    echo $match;
    }

[Dormilich]

the main problem is that $pattern lacks your delimiters, simply because sprintf() has nothing to replace.