What is the correct way to use bind_param in mySQLi in PHP?

When using bind_param in mySQLi in PHP, it is important to ensure that the data types of the variables being bound match the data types of the placeholders in the SQL query. This helps prevent SQL injection attacks and ensures proper data binding. To use bind_param correctly, you need to specify the data types of the variables being bound and pass them by reference. 

// Example of correct usage of bind_param in mySQLi
$stmt = $conn->prepare("INSERT INTO users (username, email) VALUES (?, ?)");
$stmt->bind_param("ss", $username, $email);

// Set parameters and execute
$username = "john_doe";
$email = "john_doe@example.com";
$stmt->execute();

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bind_param mySQLi PHP correct way usage

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