What are the potential pitfalls of converting a year and day number into a specific date format in PHP?

When converting a year and day number into a specific date format in PHP, one potential pitfall is not accounting for leap years. Leap years have 366 days instead of 365, so the calculation for converting a day number into a date may be incorrect. To solve this issue, you can use PHP's `DateTime` class to handle leap years and accurately convert the year and day number into a specific date format. 

$year = 2022;
$day = 60;

$date = new DateTime();
$date->setISODate($year, $day);

echo $date->format('Y-m-d');

Keywords

DateTime date_create_from_format strtotime formatting errors

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