<?php

public function checkPassword( Validation $validation, $password ) {

	$username = $validation['username'];
	$password = $this->_hashPassword( $password, $this->_getSaltFromId( $this->_getIdFromUsername( $username ) ) );


	$query =
		DB::select( 'id' )
			->from( 'users' )
			->where( 'username', '=', $username )
			->where( 'password', '=', $password );

	$result =
		$query->execute()
			->count();


	if ( $result === 0 ) {

		$validation->error( 'password', 'checkPassword' );

	}

}