What resources and documentation should be referred to when working with MySQL commands in PHP applications to ensure security and efficiency?

When working with MySQL commands in PHP applications, it is important to refer to the official MySQL documentation to ensure that commands are used correctly and efficiently. Additionally, the PHP manual should be consulted for information on how to securely handle user input and prevent SQL injection attacks. 

// Example of using prepared statements in PHP to ensure security and efficiency when working with MySQL commands

// Establish a connection to the MySQL database
$mysqli = new mysqli("localhost", "username", "password", "database");

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

// Bind the user input to the placeholder
$stmt->bind_param("s", $username);

// Set the user input
$username = "example_user";

// Execute the 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

MySQL commands PHP applications security efficiency documentation

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