Php/docs/phar.isbuffering
Phar::isBuffering
(PHP 5 >= 5.3.0, PHP 7, 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.
返回值
Returns true if the write operations are being buffer, false otherwise.
范例
Example #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());$p->stopBuffering();?>=3=<?phpvar_dump($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
