<?php

/**
 * This empty class ensures a proper naming standard
 * @see Phpr_Extension
 */

class Phpr_Extendable extends Phpr_Extension
{

}
<?php

/**
 * Base class for extension validation
 * @see Phpr_Extension
 */

class Phpr_Validate_Extension extends Phpr_Extension
{

    public function _execute_validation($method, $name, $value)
    {
        if (method_exists($this, $method))
            return $this->$method($name, $value);

        throw new Phpr_SystemException('Validation method '.$method.' not found in '.get_class($this));
    }

}

Set up base class for extension validation
Set up base class for extension validation
