What are common issues when converting date formats in PHP?

Common issues when converting date formats in PHP include incorrect date formats, timezone mismatches, and unexpected results due to different date functions. To solve these issues, it's important to ensure that the input date string matches the expected format, set the correct timezone if needed, and use the appropriate date functions for conversion.

// Example: Converting date format and setting timezone
$dateString = '2022-12-31';
$date = DateTime::createFromFormat('Y-m-d', $dateString);
$date->setTimezone(new DateTimeZone('America/New_York'));
echo $date->format('Y-m-d H:i:s');