src/PEAR/PackageFile/v1.php
function _validateWarning($code, $params = array())
    {
        $this->_stack->push($code, 'warning', $params, false, false, debug_backtrace());
    }
function _validateWarning($code, $params = array())
    {
        $this->_stack->push($code, 'warning', $params, false, false, debug_backtrace());
    }
Validation warning.  Does not mark the object contents invalid.
@param error code
@param array error information
@access private