Php/docs/phar.stopbuffering
Phar::stopBuffering
(PHP 5 >= 5.3.0, PHP 7, 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.
返回值
没有返回值。
范例
Example #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());$p->setStub("<?phpfunction __autoload(\$class){ include 'phar://brandnewphar.phar/' . str_replace('_', '/', \$class) . '.php';}Phar::mapPhar('brandnewphar.phar');include 'phar://brandnewphar.phar/startup.php';__HALT_COMPILER();");$p->stopBuffering();var_dump($p->getStub());?>
以上例程会输出：
string(24) "<?php __HALT_COMPILER();"
string(195) "<?php
function __autoload($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
