How can PHP developers optimize their code to handle special characters like Umlauts when querying a database?

Special characters like Umlauts can cause issues when querying a database in PHP due to character encoding mismatches. To handle this, PHP developers can set the character encoding for the database connection to ensure that special characters are properly handled.

// Set the character encoding for the database connection
mysqli_set_charset($connection, 'utf8');

// Perform the database query
$query = "SELECT * FROM table WHERE column = 'Umlaut ä'";
$result = mysqli_query($connection, $query);

// Fetch and process the results
while ($row = mysqli_fetch_assoc($result)) {
    // Handle the fetched data
}