[nagash]

To acquire a shared lock (reader), set operation to LOCK_SH (set to 1 prior to PHP 4.0.1).

To acquire an exclusive lock (writer), set operation to LOCK_EX (set to 2 prior to PHP 4.0.1).

To release a lock (shared or exclusive), set operation to LOCK_UN (set to 3 prior to PHP 4.0.1).

If you don't want flock() to block while locking, add LOCK_NB (4 prior to PHP 4.0.1) to operation.



повнимательнее...
set to 1
set to 2....

а по поводу открывать я имел ввиду лок ненадо снимать... когда фаил закрываешь то всё автоматом туды сюды... =)