Calculate time difference between two dates using PHP

Below is the PHP function to calculate the time difference between current date and the given date.

It will returns in Seconds, minutes, months (or) years based on the time difference.

And it can be used to calculate the time difference between two dates by changing the $today with the date which you want to pass.

function get_time_difference_php($created_time)

    {

        date_default_timezone_set('Asia/Calcutta');

        $str = strtotime($created_time);

        $today = strtotime(date('Y-m-d H:i:s'));

        

        // It returns the time difference in Seconds...

        $time_differnce = $today-$str;

        

        // To Calculate the time difference in Years...

        $years = 60*60*24*365;

        

        // To Calculate the time difference in Months...

        $months = 60*60*24*30;

        

        // To Calculate the time difference in Days...

        $days = 60*60*24;

        

        // To Calculate the time difference in Hours...

        $hours = 60*60;

        

        // To Calculate the time difference in Minutes...

        $minutes = 60;

        if(intval($time_differnce/$years) > 1)

        {

            return intval($time_differnce/$years)." years ago";

        }else if(intval($time_differnce/$years) > 0)

        {

            return intval($time_differnce/$years)." year ago";

        }else if(intval($time_differnce/$months) > 1)

        {

            return intval($time_differnce/$months)." months ago";

        }else if(intval(($time_differnce/$months)) > 0)

        {

            return intval(($time_differnce/$months))." month ago";

        }else if(intval(($time_differnce/$days)) > 1)

        {

            return intval(($time_differnce/$days))." days ago";

        }else if (intval(($time_differnce/$days)) > 0) 

        {

            return intval(($time_differnce/$days))." day ago";

        }else if (intval(($time_differnce/$hours)) > 1) 

        {

            return intval(($time_differnce/$hours))." hours ago";

        }else if (intval(($time_differnce/$hours)) > 0) 

        {

            return intval(($time_differnce/$hours))." hour ago";

        }else if (intval(($time_differnce/$minutes)) > 1) 

        {

            return intval(($time_differnce/$minutes))." minutes ago";

        }else if (intval(($time_differnce/$minutes)) > 0) 

        {

            return intval(($time_differnce/$minutes))." minute ago";

        }else if (intval(($time_differnce)) > 1) 

        {

            return intval(($time_differnce))." seconds ago";

        }else

        {

            return "few seconds ago";

        }

    }