Nu-Coder Manual

PhpExpress Manual

PHP Joomla
Development

SyncReaderWriter::readunlock	SyncReaderWriter::writeunlock

SyncReaderWriter	Last updated: Mon, 26 Oct 2026

SyncReaderWriter::writelock

(PECL sync >= 1.0.0)

SyncReaderWriter::writelock — Waits for an exclusive write lock

Description

public function SyncReaderWriter::writelock(int $wait = -1): bool

Obtains an exclusive write lock on a SyncReaderWriter object.

Parameters

wait: The number of milliseconds to wait for a lock. A value of -1 is infinite.

Return Values

Returns true on success or false on failure.

Examples

Example #1 SyncReaderWriter::writelock() example

<?php
$readwrite = new SyncReaderWriter("FileCacheLock");
$readwrite->writelock();
/* ... */
$readwrite->writeunlock();
?>

See Also

SyncReaderWriter::writeunlock() - Releases a write lock

SyncReaderWriter::readunlock	SyncReaderWriter::writeunlock

SyncReaderWriter	Last updated: Mon, 26 Oct 2026