I would like to show the number of days missing for a specific date. In other words, I want to display something like:
X days to go for the great event
using PHP and the server time.
<?php
$event_date = '2010-01-01 00:00:00';
$event_time = strtotime($event_date);
$diff = $event_time - time();
echo floor($diff/(24*60*60)).' days to go for the great event';
?>
Note: I'm totally side stepping any timezone considerations, so, be sure you read up on timezone issues associated with using the PHP datetime functions.
jakemcgraw's answer would have my vote, had I 15 rep. :)
You might want to use mktime() instead of strtotime(), though.
Related
I've been struggling to get an exact answer for this question. There are many that are close to what I'm wanting but seem to still be just off. The application of this is to ensure that a booking can't be made for a past date.
I have a form which has an input for time & another for date. Firstly, I wan't to take both of these inputs & convert them to a timestamp.
This code returns nothing
$time_date = sprintf("%s %s", $pDate, $pTime);
$objDate = DateTime::createFromFormat('H:ia d/m/Y', $time_date);
$stamp = $objDate->getTimestamp();
echo $stamp;
So I've have tried using something like this
$pDate = $_POST['pDate'];
$pTime = $_POST['pTime'];
$full_date = $pDate . ' ' . $pTime;
$timestamp = strtotime($full_date);
echo $timestamp;
But for some reason it is returning an incorrect timestamp. (i've been using an online converter) 02/06/2014 as date & 12:23am as time, is not 1401625380. This according to the converter is Sun, 01 Jun 2014 12:23:00 GMT.
Does someone have working code for returning a timestamp of both time & date inputs?
Secondly I want to compare this timestamp with a specified one & check to see if it is greater than. I've created a timestamp for my timezone with this
$date = new DateTime(null, new DateTimeZone('Pacific/Auckland'));
$cDate = $date->getTimestamp();
echo $cDate;
and will simply have an if statement which compares the two and echos the appropriate message.
I feel as though there are multiple question on here that are ALMOST what I'm wanting to achieve but I can't manage to get them working. Apologies for the near duplicate.
Note: I'm using ajax to post form data (if this could possibly interfere).
Your second code snipped is correct. Assuming it's in datetime format (Y-m-d H:i:s).
From php manual about strtotime():
Each parameter of this function uses the default time zone unless a time zone is specified in that parameter.
Check your PHP default time zone with date_default_timezone_get() function.
To compare two dates, be sure they both are in same time zones.
For datetime inputs I personally use jQuery UI timepicker addon.
you receiving the time and date in string format - so i don't believe the ajax can interfere.
as for your question:
first of all - find out what is the locale timezone of your server. you can do it by this function: date_default_timezone_get.
if the answer doesn't suit you - you can use its "sister": date_default_timezone_set, and change it to whatever value you need (like 'Pacific/Auckland' - see the documentation there). it is also recommended to return it to the original value after you finish your stuff.
i believe fixing your locale timezone will solve your issue.
in the php.ini I defined the timezone to Europe/Athens. Everything was just fine until last sunday, when the time chanegd to WINTER TIME. The time went back in 1 hour.
The problem is, that in my website - it's still like summer time, didn't go back in 1 hour... I checked it in other website and it's ok there - http://www.timeanddate.com/worldclock/city.html?n=26
To make sure, I added this line in the top of the page:
ini_set('date.timezone', 'Europe/Athens');
But it dind't help...
What heppent? How can I fix it?
I think this will help you.
date_default_timezone_set('Europe/Athens');
If you just set the default time in the start of your function or program the date is format in the country you want.
<?php
date_default_timezone_set('Europe/Athens') ;
echo "the date is:". date("d/m/Y")."<br/>";
echo "the time is:". date("h:i:s");
?>
Just two little hints:
Please check if the output of following code returns your timezone:
$date = new DateTime();
$tz = $date->getTimezone();
echo $tz->getName();
Which function or language do you use to display the time on your website? Perhaps javascript? Then the time comes from the client system.
You might consider updating your PHP time zone database. You can find the latest version here.
However, I checked through the database and it looks like Europe/Athens has been in sync with EU since 1981, which has used the Last Sunday in October since 1996. So even if you have a very old database I can't imagine that it would be incorrect for recent dates.
I've some problem with make a simple PHP function to work on my webspace meanwhile it works like expected at my localhost server.
The problem is the following calculation:
echo $Formated = date("Ymd",strtotime("last day of next month"));
This script dosen't seem to work b/c i simply gets the default date 19691231 instead of the correct one 20110630 when running it on my server.
I use windows (XAMP) as my localhost server so i guess there must be some form of problem that lies within the two platforms way of handling it?
strtotime is notoriously problematic going cross-version, so I'd recommend a vast simplification. You can use the 't' character in the date format to represent the last day of the month, then reduce your strtotime call to simply return some timestamp for the next month.
echo $Formated = date("Ymt", strtotime("next month"));
dont use of if month name is not given
try with
date('m/d/y', strtotime('last day next month'));
OR
date('m/d/y', strtotime('last day of march')); // give the month name with of
Reference
Forget Migration and Deployment, in fact strtime is not reliable. Navigate PHP's official site: Check the strtotime manual, especially this comment.
If you have a MySQL connection available, SELECT DATE_ADD( '2011-05-31', INTERVAL 1 MONTH ) would be less redundant since the (correct) functionality is already implemented without you having to implement it yourself.
I'm using the unix timestamp to show when a message was posted in my project but when I came to displaying the exact time of the post I realized it was about 12 hours behind.
I'm in the UK and my server is in the US (might be the problem).
Is there a simple way of converting the unix timestamp into a readable British time?
$timestamp = time();
print date("F jS, Y", strtotime($timestamp));
Any help would be great,
Thanks!
At the top of your script, write:
date_default_timezone_set('Europe/London');
Or if your PHP is >= 5.2.0:
date_timezone_set('Europe/London');
Just call date_timezone_set with the appropriate parameter for the UK at the start of your script when displaying the dates (not when recording them; I 'm not sure, but it might result in the "wrong" timestamps being recorded).
Edit: The timezone you want is 'Europe/London'.
try date-default-timezone-set.
date_default_timezone_set('Europe/London');
Use date_default_timezone_set('Europe/London'); to set the time zone to London's time. Not sure if it works with summer/winter time.
the simplies way is to substruct gmt offset. e.g:
echo(date('Y-m-d h:i'), $myvalue - 60 * 60 * $nhours));
where $nhours - time defference in hours.
This one worked for me
date_default_timezone_set('Europe/London');
I need to compare two dates to show an edit link if it is within 5 mins after the post was made, in PHP. If more than 5 minutes have passed, don't show anything.
$answer_post_date = get_the_time("Y-m-d");
$current_date = date("Y-m-d");
$formated_current_date = strtotime($answer_post_date);
$formated_answer_post_date = strtotime($current_date);
At this point I have two values:
1274414400 ($formated_current_date)
1276056000 ($formated_answer_post_date)
I am not sure what to do next to check if the current date/time is > 5 mins from the answer post date.
Any suggestions would be great.
All I really need the answer to be is a Boolean (yes/no) and if yes, display the minuets left to show the link to edit.
You're only handling dates, how are you supposed to know if the difference is 5 minutes?
Anyway, I'd say the majority of the PHP code that uses the default PHP functions is at least somewhat broken. The problem is you, despite a unix timestamp storing the correct point in time something happens, it does not store timezone information. See here.
So, forget using only date and strtotime. Use the datetime extension.
Store in the database the Unix timestamp and the timezone (by timezone I mean e.g. Europe/Lisbon). Then:
$tz = new DateTimeZone($timezone);
$answer_post_date = new DateTime("$timestamp");
$answer_post_date->setTimeZone($tz);
$current_date = new DateTime("now", $tz);
$diff = $current_date->diff($answer_post_date);
if ($diff->format("a") > 0 ||
$diff->format("h") > 0 ||
$diff->format("m") >= 5) {
//more than 5 minutes have passed
}
Of course, for comparing dates, you can always compare the timestamps.
My understanding of what you need to do:
$delta = ($formated_current_date - $formated_answer_post_date) / 60; // in minutes
if ($delta < 5) {
// show $delta
}
EDIT: Like others pointed out, this alone will not fix all of the issues at hand. As I see it, the smallest change to your current code would be to use a date format with higher granularity - such as "Y-m-d H:i:s". This being enough, like others pointed out, is contingent on the post's date being in the same timezone as your system.
I don't see the need to do a round-trip to a string format and back, regardless of how efficient or reliable it is.
date() will default to calling time() which you can call directly and get the current time in seconds as a Unix epoch timestamp (which is what you're trying to end up with in $formated_answer_post_date). You need to look in the WordPress docs to find the equivalent based on the post's value.
Then you can do a simple comparison of seconds. 5 minutes is 300 seconds.
You will still need to check that the code can assume the timezones of both values will be the same.