使用strtotime转换时的php日期问题，但如何正确地执行此操作？

Question

Using the following code to try and get 'Y-m-d', and should return 2016-05-10, but it is instead returning 2016-10-05.

// m-d-Y (Month-Day-Year)
$test_date = '05-10-2016';

// Convert to Y-m-d
$convert_date = date('Y-m-d', strtotime($test_date));


echo $convert_date;

How do I get 'Y-m-d' returned? Not trying to use explode('-', $test_date). Is this possible to do using proper time functions?

Answer 1

Yes, use DateTime object for this:

$test_date = '05-10-2016';
$DateTime = DateTime::createFromFormat('m-d-Y', $test_date, new DateTimeZone('utc'));
var_dump($DateTime);

OUTPUT

object(DateTime)[8]
  public 'date' => string '2016-05-10 15:08:53.000000' (length=26)
  public 'timezone_type' => int 2
  public 'timezone' => string 'UTC' (length=3)

So

echo $DateTime->format('Y-m-d'); //2016-05-10