Phar::isBuffering
(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL phar >= 1.0.0)
Phar::isBuffering — Used to determine whether Phar write operations are being buffered, or are flushing directly to disk
说明
public Phar::isBuffering(): bool
This method can be used to determine whether a Phar will save changes to disk immediately, or whether a call to Phar::stopBuffering() is needed to enable saving changes.
Phar write buffering is per-archive, buffering active for the
foo.phar Phar archive does not affect changes
to the bar.phar Phar archive.
参数
此函数没有参数。
返回值
Returns true if the write operations are being buffer, false otherwise.
范例
示例 #1 A Phar::isBuffering() example
<?php
$p = new Phar(dirname(__FILE__) . '/brandnewphar.phar', 0, 'brandnewphar.phar');
$p2 = new Phar('existingphar.phar');
$p['file1.txt'] = 'hi';
var_dump($p->isBuffering());
var_dump($p2->isBuffering());
?>
=2=
<?php
$p->startBuffering();
var_dump($p->isBuffering());
var_dump($p2->isBuffering());
$p->stopBuffering();
?>
=3=
<?php
var_dump($p->isBuffering());
var_dump($p2->isBuffering());
?>
以上例程会输出：
bool(false) bool(false) =2= bool(true) bool(false) =3= bool(false) bool(false)
参见
- Phar::startBuffering() - Start buffering Phar write operations, do not modify the Phar object on disk
- Phar::stopBuffering() - Stop buffering write requests to the Phar archive, and save changes to disk
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