How can the use of mysql_error() function in PHP enhance error handling and debugging when dealing with MySQL queries and database operations?

Using the mysql_error() function in PHP can enhance error handling and debugging when dealing with MySQL queries and database operations by providing detailed error messages when queries fail. This can help developers quickly identify and troubleshoot issues with their SQL queries, such as syntax errors or connection problems.

// Example of using mysql_error() function for error handling
$query = "SELECT * FROM users WHERE id = '123'";
$result = mysql_query($query);

if (!$result) {
    die("Query failed: " . mysql_error());
}

// Continue processing the query result