How to change date format from DD/MM/YYYY to YYYY-MM-DD? [duplicate]

Answer 1

php -r 'echo date("Y-m-d", strtotime("06/16/2010"));'

Answer 2

You should use \DateTime and get rid of strings as soon as possible:

$date = DateTime::createFromFormat('m/d/Y', '06/16/2010'); // \DateTime object
echo $date->format('Y-m-d'); // 2010-06-16

See more:
http://php.net/manual/en/datetime.createfromformat.php

Answer 3

$date = "06/16/2010";
echo date('Y-m-d', strtotime($date)); // outputs 2010-06-16

Using the strtotime function.