Answers for "execute() pdo"

php pdo connection

$host     = "localhost";//Ip of database, in this case my host machine    
$user     = "root";	//Username to use
$pass     = "qwerty";//Password for that user
$dbname   = "DB";//Name of the database

try {
    $connection = new PDO("mysql:host=$host;dbname=$dbname", $user, $pass);
    $connection->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

}catch(PDOException $e)
{
  echo $e->getMessage();                         
}

SELECT query with PDO

// select a particular user by id
$id = 1 ;
$stmt = $pdo->prepare("SELECT * FROM users WHERE id=?");
$stmt->execute([$id]); 
$user = $stmt->fetch();