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How to implement time difference in php: 1. Convert two dates into timestamps through the strtotime function; 2. Subtract the two timestamps through the "$enddate-$startdate" formula; 3. Convert the time difference " $diff_seconds" is divided by 86400 and rounded down to the nearest integer using the "floor()" function to obtain the difference in days.
The operating environment of this tutorial: Windows 10 system, PHP version 8.1, Dell G3 computer.
How to achieve time difference in php?
php Find the time difference between two given dates:
1. First convert the two dates into timestamps.
$startdate = strtotime("{$year}-01-01"); $enddate = strtotime("{$year}-{$month}-{$day}");
2. Subtract two timestamps.
(End time-Start time)
$diff_seconds = $enddate-$startdate;
This will get the time difference between the two dates, but it will still be counted in seconds, which is not conducive to reading.
Because there are 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute; convert 24*60*60=86400, so there are 86400 seconds in a day.
3. Divide the time difference $diff_seconds by 86400, and use floor() to round down to the nearest integer.
$time = floor(($diff_seconds)/86400); $time = floor(($diff_seconds)/86400);
4. What is obtained is the number of days, excluding the day of x month and x day, add 1.
This is the total number of days ending on a certain day of a certain month of a certain year.
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