They have the same format:
$date_expire = '2014-08-06 00:00:00'; $date1 = date("Y-m-d G:i:s"); $date2 = date_create($date_expire); $diff = date_diff($date1, $date2); //this line makes error.
But I am getting this error:
date_diff() expects parameter 1 to be DateTimeInterface, string given
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Answer
Because you are passing string whereas date_diff expects datetime
object,
$date_expire = '2014-08-06 00:00:00'; $date = new DateTime($date_expire); $now = new DateTime(); echo $date->diff($now)->format("%d days, %h hours and %i minuts");
DEMO.