PHP dropdown list - php

Question

I am trying to get the user to pick from the dropdown menu. When the user clicks on the selected item they will click a button and show the results.
I haven't been able to display the information onto the page.
$sql = "select * from Owner";
echo'<form action="index1.php" method="post">';
echo '<select name="bid" id="bid">';
foreach($conn->query($sql) as $row) {
echo '<option value=" ';
echo $row["id"];
echo ' ">';
echo $row['LastName'];
echo '</option>';
}
echo'</select>';
echo'<br><input type="submit" value="Show Info"><br>';
echo'</form>';
//check if submit button has been clicked
if($_SERVER['REQUEST_METHOD'] == 'POST') {
$id = $_POST['bid'];
try{
$sql = "select Owner.FirstName, Owner.LastName,MarinaSlip.BoatName from Owner, MarinaSlip where Owner.OwnerNum = MarinaSlip.OwnerNum
and Owner.FirstName = $id";
foreach($coon->query($sql) as $row){
echo$row['FirstName'].' '.$row['LastName'].' '.$row['BoatName'].'<br>';
}
}//end of try
catch(PDOExeption $e){
echo "Error: ".$e -> getMessage();
}
}