PDO

<?php
    class db {
        private $dsn = 'mysql:host=127.0.0.1;dbname=users';
        private  $username    =  'root';
        private  $password   =   '';
        public $dbh;

        public function __construct(){
            $this->conn();
        }

        public function conn(){
            try {
                $this->dbh = new PDO($this->dsn, $this->username, $this->password);
                $this->dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
                $this->dbh->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
                } catch (PDOException $e) {
                    echo  "Database Connection failed because: " . $e->getMessage() . "<br/>";
                    die();
                    }
        }

        public function run_query($name, $email) {
            try{
            $stmt = $this->dbh->prepare ("INSERT INTO users (name, email) VALUES (:name, :email)");
            /*$stmt -> bindParam(':name', $name, PDO::PARAM_STR, 12);
            $stmt -> bindParam(':email', $email, PDO::PARAM_STR, 12);*/
            $stmt->execute(array($name, $email));

        } catch (PDOException $e) {
            echo 'Query failed : '. $e->getMessage;
        }
        }
        }

        $conn = new  db;
        $conn->run_query('Dotun', 'dotunoyesanmi@gmail.com');


?>