Description:
------------
The PCRE extension does not recognize the 'J' option for setting PCRE_DUPNAMES.

Reproduce code:
---------------
<?php
preg_match_all('/(?<chr>[ac])(?<num>\d)|(?<chr>[b])/J', 'a1bc3', $m, PREG_SET_ORDER);
print_r($m);
?>


Expected result:
----------------
Array
(
    [0] => Array
        (
            [0] => a1
            [chr] => a
            [1] => a
            [num] => 1
            [2] => 1
        )
    [1] => Array
        (
            [0] => b
            [chr] => b
            [1] =>
            [num] =>
            [2] =>
            [3] => b
        )
    [2] => Array
        (
            [0] => c3
            [chr] => c
            [1] => c
            [num] => 3
            [2] => 3
        )
)


Actual result:
--------------
PHP Warning:  preg_match(): Unknown modifier 'J' in ....