What steps should be taken if a MySQL server does not allow connections from external sources when using PHP?

If a MySQL server does not allow connections from external sources when using PHP, you may need to adjust the server's configuration to allow remote connections. This can typically be done by updating the server's bind-address setting in the MySQL configuration file to allow connections from external IP addresses. Additionally, you may need to grant remote access privileges to the MySQL user being used in your PHP application. 

// Example PHP code to connect to MySQL server from external source
$servername = "your_server_ip";
$username = "your_username";
$password = "your_password";
$dbname = "your_database";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";

Keywords

MySQL server external connections PHP firewall permissions

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