我希望能够查看字符串并找到所有出现的模式。如果您知道要发生多少次模式，这很容易用 preg_match 完成，但是当不知道出现次数时，我想不出一种方法来让它工作。
下面是一个已知事件集的有效查询示例：
$pattern = '/\[VAR:(.*)\].*\[VAR:(.*)\].*\[VAR:(.*)\].*\[VAR:(.*)\]/';
$string = "[VAR:one] once apon a time [VAR:two]. And then there was the time that [VAR:three] went to [VAR:four]";
preg_match ( $pattern , $string, $matches );
print_r ( $matches );
这将返回您期望的结果：
[0] => [VAR:one] once apon a time [VAR:two]. And then there was the time that [VAR:three] went to [VAR:four]
[1] => one
[2] => two
[3] => three
[4] => four
我已经尝试了preg_match和preg_match_all的不成功变体（使用和不使用 PREG_OFFSET_CAPTURE 参数）：
$pattern = '/\[VAR:(.*)\]/';
任何帮助将不胜感激。