lib/Doctrine/DBAL/Schema/Table.php
private function getForeignKeyColumns()
    {
        $foreignKeyColumns = [];
        foreach ($this->getForeignKeys() as $foreignKey) {
            $foreignKeyColumns = array_merge($foreignKeyColumns, $foreignKey->getColumns());
        }

        return $this->filterColumns($foreignKeyColumns);
    }
private function getForeignKeyColumns()
    {
        $foreignKeyColumns = [];
        foreach ($this->getForeignKeys() as $foreignKey) {
            $foreignKeyColumns = array_merge($foreignKeyColumns, $foreignKey->getColumns());
        }

        return $this->filterColumns($foreignKeyColumns);
    }
private function getForeignKeyColumns ( ) { $ foreignKeyColumns = [ ] ; foreach ( $ this -> getForeignKeys ( ) as $ foreignKey ) { $ foreignKeyColumns = array_merge ( $ foreignKeyColumns , $ foreignKey -> getColumns ( ) ) ; } return $ this -> filterColumns ( $ foreignKeyColumns ) ; }
Returns foreign key columns

@return Column[]
Returns foreign key columns