preg_match_all find only the firt occurence

问题

I created this regexp but finds only the first occurrence, where am I wrong?

$pattern = '/\\[h-imagegallery id=([0-9,]+)\\]/';
$subject = 'ueihui [h-imagegallery id=4,55] jwff [h-imagegallery id=425]';    

print_r($matches);

the result is:

Array ( [0] => [h-imagegallery id=4,55] [1] => 4,55 )

来源：https://stackoverflow.com/questions/19236653/preg-match-all-find-only-the-firt-occurence