(https://blog.diendannhatban.info/images/a6c1f7adf632a0dc35d3471cc4191a69)
MySQLi
<?php
$servername = "localhost";
$username = "username";
$password = "password";
// Create connection
$conn = mysqli_connect($servername, $username, $password);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
echo "Connected successfully";
?>
PDO
<?php
$servername = "localhost";
$username = "username";
$password = "password";
try {
$conn = new PDO("mysql:host=$servername;dbname=myDB", $username, $password);
// set the PDO error mode to exception
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
echo "Connected successfully";
}
catch(PDOException $e)
{
echo "Connection failed: " . $e->getMessage();
}
?>
Tham khảo:
- http://www.w3schools.com/php/php_mysql_connect.asp
- http://stackoverflow.com/questions/10696696/which-one-is-faster-and-lighter-mysqli-pdo
- https://code.tutsplus.com/tutorials/pdo-vs-mysqli-which-should-you-use--net-24059