PHP-Handbuch: Advisory file locking

Beschreibung

public bool streamWrapper::stream_lock ( int $operation )

This method is called in response to flock, when file_put_contents (when flags contains LOCK_EX), stream_set_blocking and when closing the stream (LOCK_UN).

Parameter-Liste

operation

operation is one of the following:

LOCK_SH to acquire a shared lock (reader).
LOCK_EX to acquire an exclusive lock (writer).
LOCK_UN to release a lock (shared or exclusive).
LOCK_NB if you don't want flock to block while locking. (not supported on Windows)

Rückgabewerte

Gibt bei Erfolg TRUE zurück. Im Fehlerfall wird FALSE zurückgegeben.

Fehler/Exceptions

Emits E_WARNING if call to this method fails (i.e. not implemented).

Siehe auch

stream_set_blocking
flock