What potential issues can arise when using the date() function in PHP to get the day of the week?

One potential issue when using the date() function in PHP to get the day of the week is that it returns the day of the week as a number (0 for Sunday, 1 for Monday, etc.), which may not be user-friendly. To solve this, you can use the 'l' format character in the date() function to get the full textual representation of the day of the week.

$dayOfWeek = date('l', strtotime('2022-01-01'));
echo $dayOfWeek; // Output: Saturday