In the provided code snippet, what are the common pitfalls related to using the mysql_query function and handling its results?

One common pitfall related to using the mysql_query function is not properly handling errors that may occur during the query execution. To solve this issue, it is important to check the return value of mysql_query for errors and handle them accordingly. Additionally, using deprecated MySQL functions like mysql_query is not recommended as they are no longer supported in newer versions of PHP. It is recommended to use MySQLi or PDO for database interactions in PHP.

// Connect to MySQL database using MySQLi
$mysqli = new mysqli("localhost", "username", "password", "database");

// Check connection
if ($mysqli->connect_error) {
    die("Connection failed: " . $mysqli->connect_error);
}

// Execute a query
$query = "SELECT * FROM users";
$result = $mysqli->query($query);

// Check for errors
if (!$result) {
    die("Error executing query: " . $mysqli->error);
}

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

// Close connection
$mysqli->close();