title: SplFileStream meta:

• name: description content: EasySwoole SplFileStream
• name: keywords content: swoole|swoole extension|swoole framework|easyswoole,SplFileStream

SplFileStream

Use

File resource stream data operation

How to operate

::: warning The SplFileStream class inherits SplStream, and other related methods refer to SplStream。 :::

example

__construct

Initialize resources and read and write operations

• mixed $file file
• mixed $mode read and write operation type

function __construct($file,$mode = 'c+')

::: warning example :::

<?php
/**
 * Created by PhpStorm.
 * User: root
 * Date: 19-7-2
 * Time: 上午10:25
 */
require_once 'vendor/autoload.php';
$fileStream = new \EasySwoole\Spl\SplFileStream('./test.txt');
$type = $fileStream->getMetadata('stream_type');
var_dump($type);
/**
 * The output is over:
 * string(5) "STDIO"
 */

lock

File lock

• mixed $mode lock type

Lock type:

• LOCK_SH gets shared lock (read program)
• LOCK_EX gets exclusive lock (written program)
• LOCK_UN release lock (whether shared or exclusive)

  function lock($mode = LOCK_EX)

::: warning example :::

<?php
/**
 * Created by PhpStorm.
 * User: root
 * Date: 19-7-2
 * Time: 上午10:25
 */
require_once 'vendor/autoload.php';
$fileStream = new \EasySwoole\Spl\SplFileStream('./test.txt');
$lock = $fileStream->lock();
var_dump($lock);
/**
 * The output is over:
 * bool(true)
 */

unlock

Release lock

• mixed $mode Lock type

  function unlock($mode = LOCK_UN)

::: warning example :::

<?php
/**
 * Created by PhpStorm.
 * User: root
 * Date: 19-7-2
 * Time: 上午10:25
 */
require_once 'vendor/autoload.php';
$fileStream = new \EasySwoole\Spl\SplFileStream('./test.txt');
$unlock = $fileStream->unlock();
var_dump($unlock);
/**
 * The output is over:
 * bool(true)
 */