How can parameter binding be correctly implemented in an OOP PHP query?

Parameter binding in an OOP PHP query can be correctly implemented by using prepared statements with placeholders for the values to be bound. This helps prevent SQL injection attacks and improves performance by allowing the database to cache the query plan. To bind parameters, you can use the bind_param method provided by the mysqli or PDO extension in PHP. 

// Create a new mysqli connection
$mysqli = new mysqli("localhost", "username", "password", "database");

// Prepare a SQL statement with placeholders for parameters
$stmt = $mysqli->prepare("SELECT * FROM users WHERE username = ?");

// Bind parameters to the placeholders
$stmt->bind_param("s", $username);

// Set the parameter values
$username = "john_doe";

// Execute the prepared statement
$stmt->execute();

// Fetch the results
$result = $stmt->get_result();

// Process the results
while ($row = $result->fetch_assoc()) {
    // Do something with the data
}

// Close the statement and connection
$stmt->close();
$mysqli->close();

Keywords

parameter binding OOP PHP query implementation

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