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