<?php
$mysqli = new mysqli("localhost", "my_user", "my_password", "test");
if (mysqli_connect_errno()) {
printf("Échec de la connexion : %s\n", mysqli_connect_error());
exit();
}
if ($result = $mysqli->query("SELECT DATABASE()")) {
$row = $result->fetch_row();
printf("La base de données courante est %s.\n", $row[0]);
$result->close();
}
$mysqli->select_db("world");
if ($result = $mysqli->query("SELECT DATABASE()")) {
$row = $result->fetch_row();
printf("La base de données courante est %s.\n", $row[0]);
$result->close();
}
$mysqli->close();
?>