Description
Validate the running PEAR version against the dependency. This dependency is designed
to prevent PEAR versions incompatible with the current package.xml from attempting to install
it. As with all dependency validation, true is returned on success, PEAR_Error on failure
for required dependencies (and the PEAR installer dependency is required). If the
soft, force or ignore-errors
options are specified, an array containing the error message will be returned instead.
