(PECL sync >= 1.0.0)
SyncReaderWriter::readlock — Waits for a read lock
Obtains a read lock on a SyncReaderWriter object.
wait
The number of milliseconds to wait for a lock. A value of -1 is infinite.
Example #1 SyncReaderWriter::readlock() example
<?php$readwrite = new SyncReaderWriter("FileCacheLock");$readwrite->readlock();/* ... */$readwrite->readunlock();?>