(PECL sync >= 1.0.0)
SyncReaderWriter::readunlock — Releases a read lock
この関数にはパラメータはありません。
例1 SyncReaderWriter::readunlock() example
<?php
$readwrite = new SyncReaderWriter("FileCacheLock");
$readwrite->readlock();
/* ... */
$readwrite->readunlock();
?>