PHP ERROR : mysqli_stmt_bind_param() Number of variables doesn't match number of parameters in prepared statement : <p>i am facing a problem in my php file, the error is comming from the parameters in the third statement, but i can not find where is it. Here is my PHP file:</p>

<pre><code>$client = "test";
$resto = "test";

$st1 = mysqli_query($con, "SELECT client_id FROM Clients WHERE email = '$client'");
$res1 = mysqli_fetch_array($st1);
$clientID = $res1["client_id"];

echo "CLIENT ID = ";
echo $clientID;

$st2 = mysqli_query($con, "SELECT restaurant_id FROM Restaurants WHERE email = '$resto'");
$res2 = mysqli_fetch_array($st2);
$restaurantID = $res2["restaurant_id"];

echo "RESTO ID = ";
echo $restaurantID;

$statement = mysqli_prepare($con, "INSERT INTO reservations (resto_id, client_id) VALUES ($restaurantID,$clientID)");

mysqli_stmt_bind_param($statement,"ii",$restaurantID,$clientID);
mysqli_stmt_execute($statement);

$response = array();
$response["success"] = true;  

echo json_encode($response);
</code></pre>

<p>Thank you in advance for your help.</p>
