PHP provides mysqli_connect() function to open a database connection. This function takes six parameters and returns the successful connection as an object. If the connection failed to establish, then the function returns the boolean value False.
Example :-
$con = new mysqli($host, $username, $passwd, $dbname);
You can disconnect from the MySQLi database using the MySQLi close function.
Statement to close connetion :-
$con -> close();
PHP example of connecting to a MySQLi server –
<html> <head> <title>Connecting to MySQLi Server</title> </head> <body> <?php $host = "localhost"; $username = "root"; $password = "password"; $dbname = "mydb"; $con = new mysqli($host, $username, $password, $dbname); if($con->connect_errno){ print("Connection not established. "); }else{ print("Connection Established Successfully"); } $con -> close(); ?> </body> </html>