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<?php var_dump( preg_match_all('/\/social\/add-activity\/(?P<type>\w+)\/(?P<id>\d+)/', '/social/add-activity/history/1783', $matches), $matches );
Output for 4.3.3 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
int(1) array(5) { [0]=> array(1) { [0]=> string(33) "/social/add-activity/history/1783" } ["type"]=> array(1) { [0]=> string(7) "history" } [1]=> array(1) { [0]=> string(7) "history" } ["id"]=> array(1) { [0]=> string(4) "1783" } [2]=> array(1) { [0]=> string(4) "1783" } }
Output for 4.3.0 - 4.3.2
int(1) array(3) { [0]=> array(1) { [0]=> string(33) "/social/add-activity/history/1783" } [1]=> array(1) { [0]=> string(7) "history" } [2]=> array(1) { [0]=> string(4) "1783" } }