What is the common error message encountered when using mysql_fetch_object() in PHP?

When using mysql_fetch_object() in PHP, a common error message encountered is "Call to undefined function mysql_fetch_object()". This error occurs because the mysql extension has been deprecated in PHP 5.5.0 and removed in PHP 7.0.0. To solve this issue, you should switch to using the mysqli or PDO extension for interacting with MySQL databases in PHP.

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

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

// Perform a query using mysqli
$result = $mysqli->query("SELECT * FROM table");

// Fetch object from result set
while ($row = $result->fetch_object()) {
    // Process each row
}

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