public function getInstance($objectName)
    {
        return isset($this->objects[$objectName]['i']) ? $this->objects[$objectName]['i'] : null;
    }
public function getInstance($objectName)
    {
        return isset($this->objects[$objectName]['i']) ? $this->objects[$objectName]['i'] : null;
    }
public function getInstance ( $ objectName ) { return isset ( $ this -> objects [ $ objectName ] [ 'i' ] ) ? $ this -> objects [ $ objectName ] [ 'i' ] : null ; }
Returns the instance of the specified object or NULL if no instance has been
registered yet.

@param string $objectName The object name
@return object The object or NULL
Returns the instance of the specified object or NULL if no instance has been registered yet .