test mysql connection

1Example (MySQLi Object-Oriented)
2<?php
3$servername = "localhost";
4$username = "username";
5$password = "password";
6
7// Create connection
8$conn = new mysqli($servername, $username, $password);
9
10// Check connection
11if ($conn->connect_error) {
12    die("Connection failed: " . $conn->connect_error);
13}
14echo "Connected successfully";
15?>
16
17Example (MySQLi Procedural)
18<?php
19$servername = "localhost";
20$username = "username";
21$password = "password";
22
23// Create connection
24$conn = mysqli_connect($servername, $username, $password);
25
26// Check connection
27if (!$conn) {
28    die("Connection failed: " . mysqli_connect_error());
29}
30echo "Connected successfully";
31?>
32
33Example (PDO)
34<?php
35$servername = "localhost";
36$username = "username";
37$password = "password";
38
39try {
40    $conn = new PDO("mysql:host=$servername;dbname=myDB", $username, $password);
41    // set the PDO error mode to exception
42    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
43    echo "Connected successfully";
44    }
45catch(PDOException $e)
46    {
47    echo "Connection failed: " . $e->getMessage();
48    }
49?>