Is there a way to find out what is the value of the <option> in a <select> tag?

I have a form that contains a tag, with several options. Then, I want to insert the selected value on the database.

Is this doable with PHP? Or do i need JS/Jquery?

EDIT: this is what i have tried:

This creates the variable and stores the value of the option.

$query=mysql_query("Select cargo from utilizadores where nome<>'admin'");
echo '<select name="icargo[]">';
while ($row = mysql_fetch_array($query, MYSQL_ASSOC))
{
    foreach ($row as $cargo){
      echo '<option value="$cargo" name="icargo[]">'.$cargo.'</option>';
    }
}
echo '</select>';

I send the variable this way, and then i try to receive it with a foreach:

$countcargo = 0;
foreach ($_POST["icargo"] as $cargoo){
  $cargoarray[$countcargo] = $cargo;
  $countcargo++;
}