What potential issues can arise when trying to implement conditional checkboxes in PHP based on database values?

When trying to implement conditional checkboxes in PHP based on database values, potential issues can arise if the database values are not properly fetched and checked against. To solve this, you need to ensure that the database values are correctly retrieved and compared with the desired conditions to determine whether the checkbox should be checked or not.

// Assuming $databaseValue is the value fetched from the database
// and $desiredValue is the value that determines if the checkbox should be checked

$isChecked = ($databaseValue == $desiredValue) ? 'checked' : '';

echo '<input type="checkbox" name="checkbox_name" value="checkbox_value" ' . $isChecked . '>';