note 39216 added to function.flock

Using a secondary file for locking isn't too bad. You simply surround your actual writes by the flock commands on the locking file. Because of the blocking, your writes will not execute until you get the exclusive lock. <?php $filename = "data.txt"; $lock = ".lock"; // Lock the .lock file. $lock_fp = fopen($lock, "r"); if (!flock($lock_fp, LOCK_EX)) { echo "locking failed"; } // Write to the data file. $fp = fopen($filename, "w"); fwrite( $fp, "word up!"); fclose($fp); // Release the lock. flock($lock_fp, LOCK_UN); ?> Easy as pi. ---- Manual Page -- http://www.php.net/manual/en/function.flock.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+39216 Delete -- http://master.php.net/manage/user-notes.php?action=delete+39216&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+39216&report=yes Search -- http://master.php.net/manage/user-notes.php