Question

Please look at this code:

$query = $this->db->query("SELECT * FROM comments c LEFT JOIN users u ON u.user_id = c.user_id");
foreach ($query->result('Comment') as $comment)
{
// $comment holds all data from both tables
}

So, what I want is to have two objects $comment (only with columns from comments table as object properties) and $user for that comment. Is there any simple way to get that?

Please note that this is general question and I need all columns from both tables and sometimes columns in one table can have names as columns in other tables.

Answer 1

I found solution whitch works very fine for me now. Everything what I need is to use PDO.
Here is my code now:

$this->db->conn_id->setAttribute(PDO::ATTR_FETCH_TABLE_NAMES, 1);
$query = $this->db->query("SELECT * FROM comments c LEFT JOIN users u ON u.user_id = c.user_id");
foreach ($query->result_array() as $row)
{
    $comment = row2object($row, 'Comment', 'c');
    $comment->user = row2object($row, 'User', 'u');

    $comments[] = $comment;
}

And row2object() helper:

/**
 * Row to object
 * application/helpers/row2object_helper.php
 *
 * @param array $row
 * @param string $class
 * @param string $from_table alias of table name
 */
function row2object(&$row, $class, $from_table)
{
    $object = new $class;

    foreach($row as $key => $value)
    {
        list($table, $column) = explode(".", $key);

        if($table == $from_table)
        {
            $object->{$column} = $value;
            unset($row[$key]);
        }
        elseif ($table == "" && substr($key, 1, strlen($from_table)) == $from_table)
        {
            $column = substr($key, strlen($from_table) + 2);
            $object->{$column} = $value;
            unset($row[$key]);
        }
    }

    return $object;
}