PHP Manual
SyncReaderWriter
Waits for an exclusive write lock

SyncReaderWriter::writelock

(PECL sync >= 1.0.0)

SyncReaderWriter::writelock — Waits for an exclusive write lock

说明

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

Obtains an exclusive write lock on a SyncReaderWriter object.

参数

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

返回值

A boolean of TRUE if the lock was obtained, FALSE otherwise.

范例

Example #1 SyncReaderWriter::writelock() example

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

参见

SyncReaderWriter::writeunlock() - Releases a write lock

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