PHP PDO fatal error while connecting MySQL database

Question

I am getting following fatal error when i use PDO to connect and retrieve some output from MySQL

Fatal error: Call to a member function prepare() on a non-object in /home/ ... line 21

My PHP Code:

$dbConnection = new PDO('mysql:dbname=abc;host=127.0.0.1;charset=utf8', 'abc','abc');
$dbConnection->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$dbConnection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$stmt = $pdo->prepare('SELECT current_date()'); //line 21
$stmt->execute();

Answer 1

change this line:

$stmt = $pdo->prepare('SELECT current_date()'); //line 21

To:

$stmt = $dbConnection->prepare('SELECT current_date()'); //line 21

Because $pdo is not defined here but $dbConnection

Answer 2

尝试将第四行更改为

$stmt= $dbConnection->prepare...