How to Subtract Minutes - php

Question

I want to send a reminder email.I don't want to use cron on Linux/Unix/BSD box or Scheduled Tasks on Windows.
I'm trying to subtract 15 minutes from the current time.
here is my code so far (doesn't work):
$days = date("j",time());
$months = date("n",time());
$years = date("Y",time());
$hours = date("G",time());
$mins = (date("i",time()));
$secs = date("s",time());
$mins = $mins-15;

Answer 1

To subtract 15 minutes from the current time, you can use strtotime():
$newTime = strtotime('-15 minutes');
echo date('Y-m-d H:i:s', $newTime);

Answer 2

Change the date into a timestamp (in seconds) then minus 15 minutes (in seconds) and then convert back to a date:
$date = date("Y-m-d H:i:s");
$time = strtotime($date);
$time = $time - (15 * 60);
$date = date("Y-m-d H:i:s", $time);

Answer 3

You can use DateInterval
$date = new DateTime();
$interval = new DateInterval("PT15M");
$interval->invert = 1;
$date->add($interval);
echo $date->format("c") . "\n";

Answer 4

you can try this as well,
$dateTimeMinutesAgo = new DateTime("15 minutes ago");
$dateTimeMinutesAgo = $dateTimeMinutesAgo->format("Y-m-d H:i:s");

Answer 5

How about substracting the 15 minutes from time() before converting it?
$time = time() - (15 * 60);
And then use $time instead of time() in your code.

Answer 6

$currentTime = date('Y-m-d H:i:s');
$before15mins = strtotime('-15 minutes');
echo date('Y-m-d H:i:s', $before15mins);

Answer 7

You can also use strtotime function to subtract days, hours and/or seconds from current time.
echo date('Y-m-d H:i:s', strtotime('-15 minutes'));

Answer 8

Following is the way you can add days / hours / minutes / sec to current time
$addInterval = date('Y-m-d H:i:s', strtotime("+$days days $hours hours $minute minute $sec second", strtotime(currentTime)));

Answer 9

You can also use DateInterval object
<?php
$date = new DateTime('Y-m-d H:i:s');
$date->sub(new DateInterval('PT10H30S'));
echo $date->format('Y-m-d H:i:s');?>

Answer 10

Try using
$min = time() - 900; //900 seconds = 15 minutes

Answer 11

To subtract 15 minutes you can do:
date('Y-m-d H:i:s', (time() - 60 * 15));
You can replace 15 with the number of minutes you want.
In case you're looking to subtract seconds you can simply do:
date('Y-m-d H:i:s', (time() - 10));
In this way you'll subtract 10 seconds.

Answer 12

If you have only time value than below will be useful
// Your time
$time = '12:15:00';
// Returned value '12:00:00'
$newTime = date('H:i:s', strtotime($time) - (15*60));

Answer 13

I know this question is outdated but i just want to share how i did it in easy way
$current = new DateTime("10 minutes ago", new DateTimeZone('Asia/Manila') );
echo $current->format("Y-m-d H:i:s");

Answer 14

//To Get Current DateTime
$currentDate = date("Y-m-d H:i:s");
//To Get Current DateTime - 15Min
$oldDate = date("Y-m-d H:i:s", strtotime($currentDate) - (15 * 60));
echo $currentDate;
echo $oldDate;