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https://www.codexworld.com/how-to/subtract-time-from-current-datetime-php/#:~:text=Subtract%20time%20%28hours%2C%20minutes%2C%20and%20seconds%29%20from%20date,function%20converts%20string%20formatted%20DateTime%20into%20Unix%20timestamp.
https://thisinterestsme.com/subtract-hours-php/
Using PHP’s DateTime object to subtract hours from a date. You can also use PHP’s DateTime object to subtract hours from a given date and time. Take the following example: //Get the current timestamp. $current = new DateTime(); //The number of hours to subtract. $hoursToSubtract = 12; //Subtract the hours by using the DateTime::sub method.
https://rvsolutionstuff.com/blog/how-to-subtract-hours-from-datetime-in-php
I will give you very simple example how to sub hours to date and time in PHP. so let's see both example with output: Example 1: PHP Subtract Hours To DateTime index.php <?php $date = "2021-11-01 10:10:05"; $newDate = date('Y-m-d H:i:s', strtotime($date. ' -3 hours')); echo $newDate; ?>
https://stackoverflow.com/questions/38372971/subtract-2-hours-from-time-in-php
You can use DateInterval to subtract hours and minutes (which is zero in your case) in php, like this : $date = new DateTime(); $tosub = new DateInterval('PT2H10M'); // 2hr 10 mins $date->sub($tosub); echo $date->format("Y-m-dTH:i:s");
https://www.itsolutionstuff.com/post/how-to-subtract-hours-from-datetime-in-phpexample.html
Example 1: PHP Subtract Hours to DateTime. index.php <?php $date = "2021-11-01 10:10:05"; $newDate = date('Y-m-d H:i:s', strtotime($date. ' -3 hours')); echo $newDate;?> Output: 2021-11-01 07:10:05. Example 2: PHP Subtract Hours to Current DateTime. index.php <?php $newDate = date('Y-m-d H:i:s', strtotime(' -3 hours')); echo $newDate;?> Output:
https://stackoverflow.com/questions/8214104/subtract-6-hours-from-dategi-a-strtotimetime-date-data
The way of OO PHP: $date = new DateTime(); // current time echo 'Current: '. $date->format('Y-m-d H:i:s') . "\n"; $date->sub(new DateInterval('PT3H55M10S')); echo $date->format('Y-m-d H:i:s') . "\n"; For subtract 6 hrs: $date = new DateTime('2017-01-20'); // pass $time_date_data to here $date->sub(new DateInterval('PT6H'));
https://www.w3schools.com/php/func_date_date_sub.asp
The date_sub () function subtracts some days, months, years, hours, minutes, and seconds from a date.
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