Waits for a read lock

# SyncReaderWriter::readlock

(PECL sync >= 1.0.0)

SyncReaderWriter::readlock — Waits for a read lock

### Descrierea

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

Obtains a read lock on a SyncReaderWriter object.

### Parametri

`wait`

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

### Valorile întoarse

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

### Exemple

Example #1 SyncReaderWriter::readlock() example

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

### A se vedea și

- SyncReaderWriter::readunlock() - Releases a read lock