如何找到2次之间的差异？ [重复]

Question

This question already has an answer here:

• How to calculate the difference between two dates using PHP? 32 answers

Controller Function to insert time:

$input = $this->input->post('shiftStartTime');
$input = str_replace(" : ", ":", $input);
$shiftstarttime = date('H:i:s', strtotime($input));

$input2 = $this->input->post('shiftEndTime');
$input2 = str_replace(" : ", ":", $input2);
$shiftEndTime = date('H:i:s', strtotime($input2));

I want to take the time difference between 2 times

Here is my code,but it shows wrong difference time.How to solve it?

$input3 = $this->input->post('shiftEndTime')-$this->input->post('shiftStartTime');
$input3 = str_replace(" : ", ":", $input3);
$duration = date('H:i:s', strtotime($input3));

</div>

Answer 1

try with this diff function

<?php
$input = $this->input->post('shiftStartTime');
$input = str_replace(" : ", ":", $input);
$shiftstarttime = date('H:i:s', strtotime($input));

$input2 = $this->input->post('shiftEndTime');
$input2 = str_replace(" : ", ":", $input2);
$shiftEndTime = date('H:i:s', strtotime($input2));
echo date_create($shiftEndTime)->diff(date_create($shiftstarttime))->format('%H:%i:%s');
?>