(PHP >= 5.3.0, PECL phar >= 1.0.0)
Phar::getVersion — Return version info of Phar archive
Returns the API version of an opened Phar archive.
The opened archive's API version. This is not to be confused with the API version that the loaded phar extension will use to create new phars. Each Phar archive has the API version hard-coded into its manifest. See Phar file format documentation for more information.