Structure of a post-install script

Structure of a post-install script

The post-install script class must contain two methods, one named init(), and the other named run(). The init() method is called at the same time as all other post-install scripts. The run() method is called at the conclusion of each parameter group in order to process the user's responses to queries.

The init() method

PEAR_Config $xml

The current configuration used for installation.

PEAR_PackageFile_v2 $self

The package.xml contents as abstracted by this object.

string|NULL $lastInstalledVersion

The last version of this package that was installed. This is a very important parameter, as it is the only way to determine whether a package is being installed from scratch, or upgraded from a previous version. Using this parameter, it is possible to determine what incremental changes, if any, need to be performed.

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