How To Use

Connect to MySQL database:

include 'db.php';

$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$dbname = 'example';

$db = new db($dbhost, $dbuser, $dbpass, $dbname);

Fetch a record from a database:

$account = $db->query('SELECT * FROM accounts WHERE username = ? AND password = ?', 'test', 'test')->fetchArray();
echo $account['name'];

Or you could do:

$account = $db->query('SELECT * FROM accounts WHERE username = ? AND password = ?', array('test', 'test'))->fetchArray();
echo $account['name'];

Fetch multiple records from a database:

$accounts = $db->query('SELECT * FROM accounts')->fetchAll();

foreach ($accounts as $account) {
    echo $account['name'] . '<br>';
}

You can specify a callback if you do not want the results being stored in an array (useful for large amounts of data):

$db->query('SELECT * FROM accounts')->fetchAll(function($account) {
    echo $account['name'];
});

If you need to break the loop you can add:

return 'break'; 

Get the number of rows:

$accounts = $db->query('SELECT * FROM accounts');
echo $accounts->numRows();

Get the affected number of rows:

$insert = $db->query('INSERT INTO accounts (username,password,email,name) VALUES (?,?,?,?)', 'test', 'test', 'test@gmail.com', 'Test');
echo $insert->affectedRows();

Get the total number of queries:

echo $db->query_count;

Get the last insert ID:

echo $db->lastInsertID();

Close the database:

$db->close();

Conclusion

The database class uses the MySQLi extension, this is built into PHP version >= 5.0.0. If you're using PHP version 5.0.0 to 5.3.0 you'll need install: mysqlnd.

No need to prepare statements using this class, it'll do that for you automatically (write less, do more), your queries will be secure, just remember to make sure you escape your output using htmlspecialchars, or your preferred escaping method.

You're free to use this database class in your projects.

Released under the MIT License.