Connect to MySQL
PHP5 and later can work with a MySQL database using
- MySQLi extension
- PDO
PDO will work on 12 different database systems, where as MySQLi will only work with MySQL database.
<!-- MySQLi Object-Oriented -->
<?php
$servername = "localhost";
$username = "username";
$password = "pwd";
//create connection
$conn = new mysqli($servername, $username, $password);
//check connection
if($conn-> conncet_error){
die("Connection failed:" .$conn->connect_error);
}
echo "Connected successfully";
$conn->close();
?>
<!-- MySQLi Procedual -->
<?php
$servername = "localhost";
$username = "username";
$password = "pwd";
//create connection
$conn = mysqli_connect($servername, $username, $password);
//check connection
if(!$conn){
die("Connection failed:" .mysqli_connect_error());
}
echo "Connected successfully";
mysql_close($conn);
?>
<!-- PDO -->
<?php
$servername = "localhost";
$username = "username";
$password = "pwd";
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 "Connection successfully";
$conn = null;
}
catch(PDOException $e){
echo "Connection failed:" .$e->getMessage();
}
?>