> You are looking for the \G anchor or the A modifier. Both of these options work great!
I've submitted a patch to the manual page with a note explaining these options. Thanks :-) On Wed, Jun 7, 2017 at 10:13 PM, Nikita Popov <nikita....@gmail.com> wrote: > On Wed, Jun 7, 2017 at 10:03 PM, Rasmus Schultz <ras...@mindplay.dk> > wrote: > >> What do you think about adding another option to preg_match() to allow the >> $offset parameter to be treated as the start anchor? >> >> The manual proposes to do this: >> >> $subject = "abcdef"; >> $pattern = '/^def/'; >> $offset = 3; >> preg_match($pattern, substr($subject, $offset), $matches); >> >> In other words, use substr() to copy the entire remainder of the string. >> >> I just wrote a simple SQL parser tonight, and had to use this approach, >> which (I imagine) must be pretty inefficient? >> >> I'd like to be able to do the following: >> >> $subject = "abcdef"; >> $pattern = '/^def/'; >> $offset = 3; >> preg_match($pattern, $subject, $matches, PREG_ANCHOR_OFFSET, $offset); >> >> This new option would make the ^ anchor work from the given $offset, which >> allows me to parse the entire $subject without copying anything. >> >> Thoughts? >> > > You are looking for the \G anchor or the A modifier. > > Nikita > >
