using multiple list menu and checkbox php - php

Question

Am retrieving some data from the DB and am allowing users to make multiple selection via check box and also selecting a level for each selected check box. when saving, i only get to see the selected check boxes in the DB but not the level selected.
Code for making selection
include ('mysql_connect.php');
$sql = mysql_query("SELECT * FROM competency WHERE department = '$department'");
while($row = mysql_fetch_array($sql))
{
echo "<tr>";
echo "<td>";
echo"<input type='checkbox' name='comp[]' value= ".$row['id']." /> ".$row['competency']." <br /> </td>";
echo"<td> <select name='level[]'value= ".$row['id']." >
<option></option>
<option>level 1</option>
<option>level 2</option>
<option>level 3</option>
<option>level 4</option>
<option>level 5</option> </select> </td> ";
}
echo "</tr>";
?>
<input name="submit" type="submit" value="submit" />
</form>
<?php
echo" </table>";
?>
..
Code for saving into the DB
session_start();
$id = $_SESSION['user_id'];
$hobb = $_POST['comp'];
$level = $_POST['level'];
include ('mysql_connect.php');
$N = count($hobb);
for($i=0; $i < $N; $i++)
{
$var1=$hobb[$i];
$var2 = $level[$i];
//include ('connect.php');
include ('mysql_connect.php');
$table = "INSERT INTO competency_result (user_id,competency_id,level) ".
"VALUES ('$id', '$var1', '$var2')";
mysql_query($table) or die(mysql_error());
$inserted_fid = mysql_insert_id();
mysql_close();
}

Answer 1

Set the key the same for comp[] and level[], ie. $row['id'] -
while($row = mysql_fetch_array($sql))
{
...[your code]...
echo "<input type='checkbox' name='comp[".$row['id']."]' value= ".$row['id']." /> ".$row['competency']." <br /> </td>";
echo "<td> <select name='level[".$row['id']."]' >
...[your code]...
}
(note: the <select> does not have a value attribute. That is defined by the <option>)
Then you can easily get the corresponding values using
foreach($hobb as $key=>$val)
{
$var1=$hobb[$key];
$var2=$level[$key];
...[your code]...
}
(also, it looks like you have <tr> inside your loop, but </tr> after. I would assume you would want to move the closing tag inside the loop to properly close each row)