What strategies can be employed to ensure that the correct values are pre-selected in dropdown menus based on stored data in MySQL using PHP?

When pre-selecting values in dropdown menus based on stored data in MySQL using PHP, you can retrieve the data from the database and compare it with the options in the dropdown menu. If a match is found, you can set the 'selected' attribute for that option. This can be achieved by looping through the options and checking if the stored value matches the option value.

<?php
// Assume $storedValue contains the value retrieved from MySQL

$options = array("Option 1", "Option 2", "Option 3"); // Dropdown menu options

echo '<select name="dropdown">';
foreach ($options as $option) {
    if ($storedValue == $option) {
        echo '<option value="' . $option . '" selected>' . $option . '</option>';
    } else {
        echo '<option value="' . $option . '">' . $option . '</option>';
    }
}
echo '</select>';
?>