How to resolve "Class 'MySQLi' not found" fatal error

Question

I was working on a tutorial and encountered this error:

Fatal error: Class 'MySQLi' not found (long URL) at line 8

The code on line 8 is:

$mysqli = new MySQLi($db_server, $db_user, $db_pass, $db_name);

I saw someone online saying to check whether it is turned on in phpinfo(), but there is nothing under "mysqli".

Also, I'm running PHP version 5.2.5

Answer 1

You can check whether the mysqli library exists by executing the following code:

if (!function_exists('mysqli_init') && !extension_loaded('mysqli')) {
    echo '我们没有mysqli!!!';
} else {
    echo '太好了，我们有它！';
}

Answer 2

Sounds like you just need to install MySQLi.

If you think you've done this and are still having problems, please post your operating system and other information that may help with further diagnosis.