Question

For some weird reason, the following code is returning null, while the manual states it should either return true or false. There is also no information in the mysqli object.

Code

// Initialize MySQLi

$this->mysqli = new mysqli();

// Connect to the server

var_dump($this->mysqli);
var_dump($this->mysqli->real_connect($host, $username, $password, $database));
var_dump($this->mysqli);

Output

object(mysqli)#2 (17) { ["affected_rows"]=> NULL ["client_info"]=> NULL ["client_version"]=> int(50141) ["connect_errno"]=> int(0) ["connect_error"]=> NULL ["errno"]=> NULL ["error"]=> NULL ["field_count"]=> NULL ["host_info"]=> NULL ["info"]=> NULL ["insert_id"]=> NULL ["server_info"]=> NULL ["server_version"]=> NULL ["sqlstate"]=> NULL ["protocol_version"]=> NULL ["thread_id"]=> NULL ["warning_count"]=> NULL }
NULL
object(mysqli)#2 (17) { ["affected_rows"]=> NULL ["client_info"]=> NULL ["client_version"]=> int(50141) ["connect_errno"]=> int(0) ["connect_error"]=> NULL ["errno"]=> NULL ["error"]=> NULL ["field_count"]=> NULL ["host_info"]=> NULL ["info"]=> NULL ["insert_id"]=> NULL ["server_info"]=> NULL ["server_version"]=> NULL ["sqlstate"]=> NULL ["protocol_version"]=> NULL ["thread_id"]=> NULL ["warning_count"]=> NULL } 

Answer 1

You are not using it correctly.

You need to create the object using mysqli_init().

Or you put the connection info in the constructor and don’t call real_connect.