Description:
------------
"The Perl \G assertion is not supported as it is not relevant to single pattern matches." Said the documentation at http://br2.php.net/manual/en/reference.pcre.pattern.syntax.php

But, \G works in PCRE currently.

Reproduce code:
---------------
<?php

preg_match_all('/\Ga/', 'abaa', $matches);
print_r($matches);

preg_match_all('/\Ga/', 'aaba', $matches);
print_r($matches);

preg_match_all('/a/', 'abaa', $matches);
print_r($matches);

?>

Actual result:
--------------
Array
(
    [0] => Array
        (
            [0] => a
        )

)
Array
(
    [0] => Array
        (
            [0] => a
            [1] => a
        )

)
Array
(
    [0] => Array
        (
            [0] => a
            [1] => a
            [2] => a
        )

)