Diferença entre datas php >= 5.3

function diff($start,$end = false) { /* * For this function, i have used the native functions of PHP. It calculates the difference between two timestamp. * * Author: Toine * * I provide more details and more function on my website */ // Checks $start and $end format (timestamp only for more simplicity and portability) if(!$end) { $end = time(); } if(!is_numeric($start) || !is_numeric($end)) { return false; } // Convert $start and $end into EN format (ISO 8601) $start = date('Y-m-d H:i:s',$start); $end = date('Y-m-d H:i:s',$end); $d_start = new DateTime($start); $d_end = new DateTime($end); $diff = $d_start->diff($d_end); // return all data $this->year = $diff->format('%y'); $this->month = $diff->format('%m'); $this->day = $diff->format('%d'); $this->hour = $diff->format('%h'); $this->min = $diff->format('%i'); $this->sec = $diff->format('%s'); return true; }