Calculating MySQL and PHP date difference in days

[reamer]

I am trying to calculate a date difference in days using MySQL and PHP date.My code\[code\]$ArrivalDate = $variants_data['ArrivalDate'];$daydiff=floor((abs(strtotime(date("d/m/Y")) - strtotime($ArrivalDate))/(60*60*24)));\[/code\]Output\[code\]<td>'.$daydiff.'</td>\[/code\]ResultsI get 93 days instead of 26 days (got 26 days using this calculator http://easycalculation.com/date-day/number-of-days.php)ArrivalDate value = http://stackoverflow.com/questions/15877121/2013-05-03 from MySQL table and it changes due to transport delays, etc.How can I achieve this in PHP?