# Phar::stopBuffering

(PHP 5 >= 5.3.0, PHP 7, PHP 8, PECL phar >= 1.0.0)

Phar::stopBuffering — Stop buffering write requests to the Phar archive, and save changes to disk

### 说明

public Phar::stopBuffering(): void

Phar::stopBuffering() is used in conjunction with the Phar::startBuffering() method. Phar::startBuffering() can provide a significant performance boost when creating or modifying a Phar archive with a large number of files. Ordinarily, every time a file within a Phar archive is created or modified in any way, the entire Phar archive will be recreated with the changes. In this way, the archive will be up-to-date with the activity performed on it.

However, this can be unnecessary when simply creating a new Phar archive, when it would make more sense to write the entire archive out at once. Similarly, it is often necessary to make a series of changes and to ensure that they all are possible before making any changes on disk, similar to the relational database concept of transactions. The Phar::startBuffering()/Phar::stopBuffering() pair of methods is provided for this purpose.

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

没有返回值。

### 错误／异常

PharException is thrown if any problems are encountered flushing changes to disk.

### 示例

示例 #1 A Phar::stopBuffering() example

`<?php
$p = new Phar(dirname(__FILE__) . '/brandnewphar.phar', 0, 'brandnewphar.phar');
$p['file1.txt'] = 'hi';
$p->startBuffering();
var_dump($p->getStub());
$p->setStub("<?php
function __autoload(\$class)
{
include 'phar://brandnewphar.phar/' . str_replace('_', '/', \$class) . '.php';
}
Phar::mapPhar('brandnewphar.phar');
include 'phar://brandnewphar.phar/startup.php';
__HALT_COMPILER();");
$p->stopBuffering();
var_dump($p->getStub());
?>`

以上示例会输出：

    string(24) "<?php __HALT_COMPILER();"
    string(195) "<?php
    function __autoload($class)
    {
        include 'phar://' . str_replace('_', '/', $class);
    }
    Phar::mapPhar('brandnewphar.phar');
    include 'phar://brandnewphar.phar/startup.php';
    __HALT_COMPILER();"

### 参见

- Phar::startBuffering() - Start buffering Phar write operations, do not modify the Phar object on disk
- Phar::isBuffering() - Used to determine whether Phar write operations are being buffered, or are flushing directly to disk

`↑` and `↓` to navigate • `Enter` to select • `Esc` to close • `/` to open