Call to a member function prepare() on a non-object in (Fatal error)

Question

Fatal error: Call to a member function prepare() on a non-object in G:\\xampp\\htdocs\\live\\Billing Suryas\\model\\DBConfig.php on line 28

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Answer 1

You write a class with these properties:

class Database
{   
    private $host = "localhost";
    private $db_name = "new_suryas1";
    private $username = "root";
    private $password = "";
    public $conn;

Inside a class method, variable scope is same as functions: external variables are not accessible.

To access to class properties inside a class method you have to use $this:

$this->conn = new PDO("mysql:host=" . $this->host . ";dbname=" . $this->db_name, $this->username, $this->password);
$this->conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 

(...)

$stmt = $this->conn->prepare("select * from users where user_name=:uname and password=:paswrd and permission='0' and delet='0'");

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• Read more about variable scope
• Read more about What does the variable $this mean in PHP?