What are the potential pitfalls of relying on browser compatibility for PHP date fields?

Relying on browser compatibility for PHP date fields can lead to inconsistencies in date formatting and parsing across different browsers. To ensure consistent handling of dates, it is recommended to use PHP date functions to format and parse dates instead of relying on browser capabilities.

$date = "2022-01-15";
$formatted_date = date("Y-m-d", strtotime($date));
echo $formatted_date;