当我找到此答案时，我无法弄清楚如何修改模式以使用自己的定界符where {和}。所以我的方法是使其更通用。
$delimiter_wrap = '~';
$delimiter_left = '{';/* put YOUR left delimiter here. */
$delimiter_right = '}';/* put YOUR right delimiter here. */
$delimiter_left = preg_quote( $delimiter_left, $delimiter_wrap );
$delimiter_right = preg_quote( $delimiter_right, $delimiter_wrap );
$pattern = $delimiter_wrap . $delimiter_left
. '((?:[^' . $delimiter_left . $delimiter_right . ']++|(?R))*)'
. $delimiter_right . $delimiter_wrap;
/* Now you can use the generated pattern. */
preg_match_all( $pattern, $subject, $matches );
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