What is the significance of the note from the PHP manual regarding the timezone parameter in date_create_from_format?

The significance of the note from the PHP manual regarding the timezone parameter in date_create_from_format is that if the timezone is not explicitly set, the function will default to the timezone set in the php.ini file. This can lead to unexpected results if the timezone is different from what is intended. To solve this issue, you should always explicitly set the timezone parameter when using date_create_from_format.

$dateString = '2022-01-01 12:00:00';
$timezone = new DateTimeZone('America/New_York');
$date = date_create_from_format('Y-m-d H:i:s', $dateString, $timezone);
echo $date->format('Y-m-d H:i:s');