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SyncReaderWriter::__construct	SyncReaderWriter::readunlock

SyncReaderWriter	Last updated: Mon, 26 Oct 2026

SyncReaderWriter::readlock

(PECL sync >= 1.0.0)

SyncReaderWriter::readlock — Waits for a read lock

Description

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

Obtains a read 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::readlock() example

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

See Also

SyncReaderWriter::readunlock() - Releases a read lock

SyncReaderWriter::__construct	SyncReaderWriter::readunlock

SyncReaderWriter	Last updated: Mon, 26 Oct 2026