(PHP MySQL) Connect to a Database (Cont.)
$conn = mysqli_init( );
The function initializes MySQLi and returns an object to use with the mysqli_real_connect( ) function.

mysqli_ssl_set( $conn, NULL, NULL, "DigiCertGlobalRootCA.crt.pem", NULL, NULL );
The function is used to establish secure connections using SSL (Secure Sockets Layer), which is a security protocol that provides privacy, authentication, and integrity to Internet communications.
The DigiCertGlobalRootCA.crt.pem file is a text-based file that contains a certificate, a private key, and any associated certificates.
The PEM file format is used by many different applications, including OpenSSL, PuTTY, and Thunderbird. A CRT file is a binary file that contains only the certificate. By default, Azure Database for MySQL enforces SSL connections between your server and your client applications to protect against MITM (man in the middle) attacks. The syntax is as follows: 

mysqli_ssl_set( connection, key, cert, ca, capath, cipher )

Parameter Description
connection Required. Specifies the MySQL connection to use.
key Required. Specifies the path name to the key file.
cert Required. Specifies the path name to the certificate file.
ca Required. Specifies the path name to the certificate authority file.
capath Required. Specifies the pathname to a directory that contains trusted SSL CA certificates in PEM format.
cipher Required. Specifies a list of allowable ciphers to use for SSL encryption. 

 <html><body>
 <?php
  $username = "wenchen";
  $database = "wenchen";
  $host     = "undcemmysql.mysql.database.azure.com";
  $password = "";

  // Initializing MySQLi
  $conn     = mysqli_init( );

  // Creating an SSL connection
  mysqli_ssl_set( $conn, NULL, NULL, "DigiCertGlobalRootCA.crt.pem", NULL, NULL );

  // Opening a new connection to the MySQL server
  mysqli_real_connect( $conn, $host, $username, $password, $database, 3306 );

  // Connecting to the database
  if ( $conn->connect_errno )
    die( 'Failed to connect to MySQL: ' . $conn->connect_error );
  else
    echo "Successfully connect to MySQL!";

  // Closing the database connection
  $conn->close( );
 ?>
 </body></html>
                   




      My wife left me because I am insecure.    
      No wait, she’s back.    
      She just went to get coffee.