PHP实现正则匹配所有括号中的内容

<?php
    $strSubject = "abc【111】abc【222】abc【333】abc";
    $strPattern = "/(?<=【)[^】]+/";
    $arrMatches = [];
    preg_match_all($strPattern, $strSubject, $arrMatches);
    var_dump($arrMatches);

~ » php mytest/test_preg.php                                                                                 iwaimai@bogon
array(1) {
 [0]=>
 array(3) {
  [0]=>
  string(3) "111"
  [1]=>
  string(3) "222"
  [2]=>
  string(3) "333"
 }
}