preg_match: the A modifier works with offset

[KentarouTakeda]

This reverts the wording change from #5652. The text introduced by that PR is:

use the \G assertion rather than the ^ anchor, or the A modifier; both of which do not work with the offset parameter.

The problem is that both includes the A modifier. It actually works like this:

$ php -a
Interactive shell

php > echo PHP_VERSION, " / PCRE ", PCRE_VERSION, PHP_EOL;
8.5.11 / PCRE 10.48 2026-08-31
php > var_dump(
php (   preg_match('/\Gdef/', "abcdef", $m, 0, 3),
php (   preg_match('/def/A',  "abcdef", $m, 0, 3), // works fine
php (   preg_match('/def/A',  "abcdef", $m, 0, 2), // anchored at offset 2: no match
php (   preg_match('/def/',   "abcdef", $m, 0, 2), // unanchored: matches
php (   preg_match('/^def/',  "abcdef", $m, 0, 3), // previous PR's scope
php (   preg_match('/\Adef/', "abcdef", $m, 0, 3), // previous PR's scope
php ( );
int(1)
int(1)
int(0)
int(1)
int(0)
int(0)

By the way, the original PR's description says:

It read as if ^ and \A both worked with offset and to use use \A instead of ^.

The PR mentions the \A anchor. But the docs describe the A modifier. Changing A to \A on the docs side would at least make it not wrong (see the last two examples), but since the text is about avoiding substr(), it should still describe the A modifier.

So I think the original text from before that change is the best.