Codeigniter inserting value into array - sql

Question

I asked a question on SO a few hours back.
How to insert an Array of field names from a form into SQL database in Codeigniter.
<tr>
<td><input type="text" name="user[0][name]" value=""></td>
<td><input type="text" name="user[0][address]" value=""><br></td>
<td><input type="text" name="user[0][age]" value=""></td>
<td><input type="text" name="user[0][email]" value=""></td>
<tr>
<td><input type="text" name="user[1][name]" value=""></td>
<td><input type="text" name="user[1][address]" value=""><br></td>
<td><input type="text" name="user[1][age]" value=""></td>
<td><input type="text" name="user[1][email]" value=""></td>
</tr>
..........//so on
This is the best answer I got
foreach($_POST['user'] as $user)
{
$this->db->insert('mytable', $user);
}
Now I want to pass a id generated from user session data into this array + a few other values like current time
Is it possible to tweak the above solution?
The Previous Discussion Here

Answer 1

foreach($_POST['user'] as &$user)
{
$user['additional_data'] = $_SESSION['additional_data'];
$user['current_time'] = time();
$this->db->insert('mytable', $user);
}
Note the & in &$user which is a pass by reference which allows manipulation of an array within a foreach loop. If you reference user later remember to unset($user) to remove the reference to the last element of the $_POST['user'] array.

Answer 2

I don't know if I'm missing something here, but can't you just remove the foreach and build your code like this:
$var1 = $_POST['user_var1'] * 3 + 1 / 5;
$this->db->insert('mytable', $var1);
$var2 = gettime();
$this->db->insert('mytable', $var2);
....
(where gettime() should be replace with whatever the PHP command for getting time is, plus maybe a formatting function)