Soluciones examen 2

/*
 * * MySQLi procedural * MySQLi orientat a objectes * PDO
 * 
 * MySql MySqli PDO
 */


$sql = "insert into clientes (mail,password) values (:mail,:password)";
$st = $conn->prepare($sql);
$st->execute(array(':mail' => 'pepe@pepe.com', ':password' => '1234'));


$sql = "SELECT count(idproductos) as total FROM productos";
$st = $conn->prepare($sql);
$st->execute();
$row = $st->fetch();
echo "El número de productos es: " . $row['total'] . "<br/>";


$sql = "SELECT sum(importe) as total FROM pedido";
$st = $conn->prepare($sql);
$st->execute();
$row = $st->fetch();
echo "La suma de los importes de los pedidos es: " . $row['total'] . "<br/>";


$sql = "delete from productos where idproductos=:idproductos";
$st = $conn->prepare($sql);
$st->execute(array(':idproductos' => 5));

$sql = "SELECT mail FROM clientes";
$st = $conn->prepare($sql);
$st->execute();
while ($row = $st->fetch()) {
 echo $row['mail'] . "<br/>";
}

$sql = "SELECT mail FROM clientes where mail like '%@gmail.com'";
$st = $conn->prepare($sql);
$st->execute();
while ($row = $st->fetch()) {
 echo $row['mail'] . "<br/>";
}


$sql = "insert into clientes (mail, password) values (:mail, :password)";
$st = $conn->prepare($sql);
for ($i = 0; $i < 10; $i++)
 $st->execute(array(':mail' => 'test@test.com', ':password' => '1234'));

function import_total_IVA($idclient) {
 global $conn;
 try {
 $sql = "select sum(import*(1+iva)) as total from comandes join clients using (idclients) where idclients=:idclients";
 $stmt = $conn->prepare($sql);
 $stmt->execute(array(':idclients' => $idclient));
 $fila = $stmt->fetch();
 $total = $fila['total'];
 return $total;
 } catch (Exception $ex) {
 return 0;
 }
}