How can PHP developers troubleshoot issues related to data not displaying correctly after updates in MySQL tables?

Issue: PHP developers can troubleshoot issues related to data not displaying correctly after updates in MySQL tables by checking the SQL queries used to update the data, ensuring that the data is being updated correctly in the database, and confirming that the PHP code is retrieving and displaying the updated data accurately.

// Connect to MySQL database
$connection = mysqli_connect("localhost", "username", "password", "database");

// Update data in MySQL table
$update_query = "UPDATE table_name SET column_name = 'new_value' WHERE condition";
mysqli_query($connection, $update_query);

// Retrieve and display updated data
$select_query = "SELECT * FROM table_name WHERE condition";
$result = mysqli_query($connection, $select_query);

while ($row = mysqli_fetch_assoc($result)) {
    echo $row['column_name'];
}

// Close database connection
mysqli_close($connection);