What are some best practices for updating MySQL tables in PHP to ensure only one value is set to 1?

When updating MySQL tables in PHP to ensure only one value is set to 1, you can achieve this by first setting all values to 0 before updating the desired value to 1. This ensures that only one value is set to 1 at a time. 

// Connect to MySQL database
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

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

// Set all values to 0
$sql_reset = "UPDATE table_name SET column_name = 0";
$conn->query($sql_reset);

// Update the desired value to 1
$id = 1; // Example ID
$sql_update = "UPDATE table_name SET column_name = 1 WHERE id = $id";
$conn->query($sql_update);

// Close the connection
$conn->close();

Keywords

PHP MySQL UPDATE query WHERE clause boolean column

Related Questions