This field allows the user to select an interval of time. DateTime::setTimezone — Legt die Zeitzone für ein DateTime-Objekt fest. 2. I would like to calculate with PHP the start and end datetime of an event. Properties recurrences. This date will be written into an . Data type for storing hour interval. interval 1: 03:05 interval 2: 05:00 Total interval : 08:05 Instead you need to create a new DateTime object, then use the add function to add the intervals and finally display the difference to the reference point:PHP Collective Join the discussion This question is in a collective: a subcommunity defined by tags with relevant content and experts. 1. xxxxxxxxxx. 3. These are the top rated real world C# (CSharp) examples of DateInterval extracted from open source projects. 0) Examples: Z or +02:00: T: Timezone abbreviation, if known; otherwise the GMT offset. Date/Time Functions. 3. (For example in PHP, strtotime() will ignore DST, and report that between the midnights of the last Saturday of October and that of the following Monday, exactly 2 * 24 * 60 * 60 seconds have passed, even if that is plainly not true. A date interval stores either a fixed amount of time (in years, months, days, hours etc) or a relative time string in the format that DateTime's constructor supports. And I don't mean by just a couple seconds like one would expect, I mean lots of minutes. I am trying to calculate all the hours from start to end which I was able to do, but I need to display the hours in intervals. It also provides the static method, which accepts the input strings and sets up a DateInterval from the input string. Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; Labs The future of collective knowledge sharing; About the companyPHP Collective Join the discussion This question is in a collective: a subcommunity defined by tags with relevant content and experts. Adding a DateInterval of 1 day to a DateTime set at midnight results in a DateTime set to 1:00 AM. Si el objeto DateInterval se creó con DateTime::diff(), entonces es el número total de días entre las fechas de inicio y fin. The date time format I have is: 2011-11-17 05:05: year-month-day hour:minute. It should actually be: 25:25The DateAdd function has a built-in calendar algorithm to prevent it from returning an invalid date. 1. Represents a date interval. The problem is not in php, it's with my mathematical skills. And converting months to seconds is complete nonsense. I'm sure I could come up with a solution by brute force if necessary, but I'm. Difference. This is an alias for the constructor that allows better fluent syntax as it allows you to do ChronosInterval::create(1)->fn() rather than (new ChronosInterval(1))->fn(). Number of microseconds, as a fraction of a second. 5. PHP DateInterval: Diff between same date in two different months is not one month 3 Calculate months between two dates using DateInterval without wrapping within a yearMain PHP Function Online page. The date filter accepts strings (it must be in a format supported by the strtotime function), DateTime instances, or DateInterval instances. invert. They will receive two different dates in their constructors. It is a mandatory parameter which specifies the DateInterval object which we want to subtract. DateTime handles time-of-day, not time intervals. – John Conde. Carbon 继承了PHP的 Datetime 类，所以 Carbon 中没有涉及到的，但在 Datetime 中已经实现的方法都是可以使用的。. Add 30 minutes in specified time. Next, you’ll subtract the specified interval from the given DateTime object by using the sub () functio n. This is what I tried first and days cannot be set when the interval is created from diff, that's why we currently have the exception 'Can not instance a DateInterval object created from DateTime::diff(). A workaround to add the T portion of the duration of the ISO 8601 standard and not need to default as P0M, is to insert 2 additional checks after the P0Y replaced by Y. 1). I'm retrieving a datetime from a mysql field but I need to round it up to the nearest 10 minutes. Véase DateInterval::format(). 3. For example, if you want to allow the user to choose how often they receive a status email, they could use this field to choose intervals like every "10 minutes" or "3 days". format. DateTime::createFromImmutable. Calculate business days. 3. PHP DateInterval - 30 examples found. A se vedea și. Regarding PHP 5. Date and time manipulation is an unavoidable part of programming; there will inevitably be a part of a project that requires a date to be modified. DatePeriod::getStartDate — Gets the start date. 12-hour format of an hour without leading zeros: 1 through 12: G: 24-hour format of an hour without leading zeros: 0 through 23: h: 12-hour format of an hour with leading zeros:. Found This Useful? Share This Page!You shouldn't use diffForHumans()in this case, because it returns only a string on which one can no longer work. Not as compact as if you did convert it to one unit of time and store it as an int, but much more compact than serializing the DateInterval object and storing the whole thing. Messages represent two responses of the same individual to the same event. I was trying to. B. 93, then follow the top example. I believe this involves converting the string to a date object. 1. As commented by @Álvaro González on my other answer that objects in many languages behave some what different than what we think when passing objects between different variables. 3. mktime alternative. 2 meant using date (), strtotime (), and other date related functions sometimes in convoluted ways to get to the date (s) you were looking for. In my current code I create three objects and have to call a method on 2 of them. Mar 16, 2017 at 2:35. So: $date =. DateTime::add() - Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object DateTime::diff() - Returns the difference between two DateTime objects DateTime::modify() - Alters the timestampAdds the specified DateInterval object to the specified DateTime object. This function accepts an interval and a format string as parameters and, formats the given interval in the specified format. DateTime::__construct — Returns new DateTime object. Adding as new answer instead of rewording / rephrasing old one. Why isn't the last date included or why there isn't a flag like DatePeriod::EXCLUDE_START_DATE to INCLUDE_END_DATE , I don't know. I don't have the time to look into this at the moment but I hope this points you in the right direction. Below programs illustrate the DateTime::sub () function in PHP: Program 1: This program uses DateTime::sub () function to subtract 2 days from given date object. Part of PHP Collective. PHP: DateInterval # Adds 7 days to the project launch. What I'd like to do is only show the time formatted in x hours ago if the time is within the last 24 hours, otherwise just show a normal datetime. More specifically, the information in an object of the DateInterval class is an instruction to get from one date/time to another date/time. The method is aware of DST changeovers, and hence can return an interval of 24 hours and 30 minutes, as per one of the examples. Three refreshes right now at 9:51pm give the following results: 2013-03-26 09:09:03, 2013-03-26 09:17:03, 2013-03-26 09:30:03 The best course of action is using PHP's DateTime (and DateInterval) objects. Nota: . DateIntervalType Field. 3. <?phpPHP에서의 DateTime은 늘 문자열로 처리되어 를 엄청나게 사용하게 되고, 기간 비교를 위해 timestamp를 직접 다뤄야 하는 번거로움 등 불편함을 다 적기에 시간이 부족할 정도다. 2. here's what I was going to say: (php 5 >= 5. 00PM'; $date = new DateTime ($string); $interval = new DateInterval ('PT6H'); $date. Fortunately with PHP 5. 3, I suppose any such conversion function would know how many seconds are in a year, a month, a day, an hour, and a minute. S is the second designator that follows the value for the number of seconds. DateInterval::createFromDateString. 1. ; Both these methods are marked in the doco as being. If its not the first day of the week get the first day of that week with strtotime "last sunday" (or monday) for the first date. This is a great answer to this question, but I also just want to say, to anyone reading this, it's well worth your time to learn how to use them if. DateTime "first day of last month" not returning the first day. The number of seconds in a day, days in a year, seconds in a year, etc. php date next month gives wrong day. We will further analyze their implementations. Then, create a DatePeriod with this information, and iterate over it to show the resulting times:Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; Labs The future of collective knowledge sharing; About the companyCarbon 是php的日期处理类库（A simple PHP API extension for DateTime. Unexpected DateTime DateInterval DatePeriod results. I've read the documentation and don't quite understand how it works. <?php /** * Calculate differences between two dates with precise semantics. 48. date, and this for DateInterval): Im on mobile i cant cant test it but if it s dont work i can correct in few hour. key vendor/bin. e. 0, PHP 7) use DateTime; use DatePeriod; use DateInterval; class DashboardController extends Controller { } ShareCreate your own server using Python, PHP, React. To format DateTimeImmutable and DateTime objects, please refer to the documentation of the DateTimeInterface::format () method. Now, we will discuss P1D. Return Value : This function returns a DateTime. 0. In 8. The objective is very simple. Example #1 DateTimeImmutable::add/sub add intervals which cover elapsed time Adding PT24H over a DST transition will appear to add 23/25 hours (for most timezones). 特定の日付を元に明日の日付や1週間後の日付、一時間後の時間などの日時の加算や、昨日の日付や昨年の日付などの日時の減算の方法です。. If I chose 05 Aug 2015 as start date and 17 Oct 2015 as end date, then my array output should be divided in 3 arrays: 1st array for 05 Aug 2015 - 31 Aug 2015; 2nd array for 01 Sept 2015 - 30 Sept 2015;June 23, 2022. Can't use Carbon on this project – Eric Evans. Six years and five minutes is P6YT5M. DateTimeImmutable::add() - Returns a new object, with added amount of days, months, years, hours, minutes and seconds DateTimeImmutable::diff() - Returns the difference between two DateTime objects DateTimeImmutable::modify() - Creates a new object with modified timestamp ＋add a noteWe have function which creates a DateTime object from a serialised date string in the session and compares it to now using the DateTime diff function. DateTime::__construct — Returns new DateTime object. Once you understand understood how DateInterval works, adding or substracting a duration to a DateTime object is pretty straightforward. The idea is to. [2012-05-05 20:45 UTC] php at arjanonline dot net Description: ----- When I create a DateTime object from a (any) timestamp and then add a DateInterval object to the DateTime object, the time in the DateInterval object is added and one additional hour is also added. If you're stuck with 5. 3 及更高版本中的 DateTime() 和 DateInterval() 的对象 此方法是一种面向对象的方式，用于获取两个日期之间的差值，这也是最简单的方法，因为它不需要手动计算日期，因此我们推荐在 PHP >5. and two wrongs will happily make one right). Share. 0, PHP 7, PHP 8). Excess =. This is expected because it is not possible to overflow values like "32 days" which could be interpreted as anything from "1 month and 4 days" to "1 month and 1 day". I used: composer require league/oauth2-server openssl genrsa -out private. 5H PT585. During night from 2018-03-24 to 2018-03-25 (timezone change from CET to CEST in France), I noticed a strange behavior : the DateInterval result was 1 hour less than expected. date, and this for DateInterval): // Return adjusted start and end times as an array. Collectives™ on Stack Overflow. 0. Don't fall into the trap of using date functions for this! What you have here is a time interval, not a date. Why it's not a bug: The current behavior is correct. e. 2. 2. Based on Mark Baker's answer, I wrote this function: /** * Compute a range between two dates, and generate * a plain array of Carbon objects of each day in it. Parameters. epoch time), a DateTime object, and a string. So PHP should add that with each iteration. I am trying to create a dropbox that will display the last year, the current year and the next year using the php DateTime object. See DateInterval::format () . How To's. . The most. DateTime::diff () - Returns the difference between two DateTime objects. EditBelow programs illustrate the DateTime::sub () function in PHP: Program 1: This program uses DateTime::sub () function to subtract 2 days from given date object. For example, 1 hour 30 minutes should display as 1. The Overflow BlogCreate a new ChronosInterval instance from specific values. I get the start of this event and the duration to add to get the end. So, there are same moment will return 0. 3. NOTE: This approach does not work for intervals less than a day with time-zones that recognize DST, due to a known issue with dates and the DST hour changes. 5. Notas. Welcome back! If you're the original bug submitter. You will also have to use the letter T for intervals which contain a time component. Only missing some explanation of the DateInterval value P1D, so here are some Period Designator examples Two days : P2D Two seconds : PT2S One week and ten minutes : P1WT10M Y for years M for months D for days W for weeks. DatePeriod::getRecurrences — Gets the number of recurrences. 1, 3, 12: D: Days, numeric, at least 2 digits with leading 0: 01, 03, 31: d: Days, numeric: 1, 3, 31: a: Total number of days as a result of a DateTime::diff() or (unknown). 3's DateInterval supports this. This class’s constructor takes the given interval as a string that starts with P. 3D P1DT1. For example, If the datetime is 2013-11-06 14:00:01, I'd like to return the time as 6/11/2013 14:1. Calculated date is before 00:00:00 on January 1 of the year 1, or later than 23:59:59 on December 31, 9999. 7 it adds 1 to the hour to make it go from 1 to 2, without being tipped up by the DST transition. This is expected because it is not possible to overflow values like "32 days" which could be interpreted as anything from "1 month and 4 days" to "1 month and 1 day". Also think about Days,. Transform your intervals into timestamps. How to create split second DateInterval in PHP? For example: 0. P1Y2M3DT4H5M6S — 1 year 2 months 3 days 4 hours 5 minutes and 6 seconds. しかし、 DateTime クラスはまだ十分普及しているとは言えないようにも見えます。. But due to the Leap Second it isn't always the case. The DateInterval object is used to specify the interval of time to subtract, in this case "P1M" for one month. The following happens internally: +1 month increases the month number (originally 1) by one. When getting the difference between two DateTime objects with fractions of seconds, DateTime::diff() works under PHP 7. This works because there are exactly 3600 seconds in one hour (60 x 60 = 3600). I can easily trim the number of decimals by adjusting the string length parameter; here I use 4 to get milliseconds, but you could use 7 to get. Parameters. 7 does is more correct than PHP 8. 0. " [2012-02-25 12:20 UTC] map at wafriv dot de I've got the same problem with PHP 5. 5. This object does not have sub function. DateTime::diff () - Returns the difference. Like petros at rufunka dot com said, there is a difference of 1 hour between Europe/Berlin and UTC. In general an. 3. VB. It is a Class of PHP that represents a date interval. $timezone = new DateTimeZone('America/New_York'); $date1 = new DateTime (date("Y:m:d H:i:s", time()), $timezone); $date1->add(new DateInterval. The most. If you want to calculate with absolute time,. So, one way to do this is to substract the time from Carbon first and then calculate diff. 1. I have this formula to get my fix hours : FixEncodedHours = Decimal. ini or declared in Twig -- see below), but you can override it by explicitly specifying a timezone: 1. I also attempted to do it in a way which would fail to preserve number. In order to compare those two dates we use the method diff() of the first. Minutes to add will just be a number between 0 and 59 So, PHP should add that with each iteration. For example, if you only are interested in hour difference, and you know that difference can't be more than 24 hours, then use only %H. The format method is then used to output the date in the desired format of "m-Y". Last day of previous months calculating wrong. Three refreshes right now at 9:51pm give the following results: 2013-03-26 09:09:03, 2013-03-26 09:17:03, 2013-03-26 09:30:03This is a direct port of the code that PHP uses internally to calculate ranges, with the exception that it doesn't take daylight savings time into account. Using DateTime::diff() function. Please note this assumes that all days are 24hrs which may not. Related tutorials: Subtract hours from a date using PHP. PHP で DateInterval を使用して昨日の日付を取得する. glad that it helped :) – macghriogair. This form element takes in 8601 Duration Strings or PHP DateInterval objects as its value/default value, and outputs PHP DateInterval objects upon form submission. Example: Lets get the previous day. This method will handle intervals created via the DateInterval contructor more or less correctly,. The form element collects year, month, day, hour, minute and seconds, and by passing the #granularity, the developer can select which time elements should be included. I believe this involves converting the string to a date object. Specifically, the relative formats supported by the parser used for DateTimeImmutable, DateTime, and strtotime() will be used to construct the DateInterval. get php DateInterval in total 'minutes' 0. We can use it to get the current year, current month, current hour, etc. Hour (0 through 23) Minute 8: Minute (0 through 59) Month 2: Month (1 through 12) Quarter 1: Quarter of year (1 through 4) Second 9:. Program 2: This program uses DateTime::sub () function to subtract the given interval from date object. Even with DateInterval though you'll have to do some calculations, since it'll break down an interval into days and hours. A date interval stores either a fixed amount of time (in years, months, days,. ' in the instance() method, because PHP DateInterval generate an immutable days property (don't know why) when created from diff(). If you prefer to avoid using string methods, or going into calculations, or even creating additional variables, mktime supports subtraction and negative values in the following way:Collectives™ on Stack Overflow. Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; Labs The future of collective knowledge sharing; About the company31 years 8 months 2 weeks 5 days 1 hour 46 minutes 40 seconds 317 years 1 month 5 days 17 hours 46 minutes 40 seconds 3170 years 11 months 3 weeks 6 days 9 hours 46 minutes 40 seconds. $string = '1/1/2016 11. Whether you're preparing for your first job interview or aiming to upskill in. We discussed PHP’s old version 5. Converting seconds into period of time. – Paul Feakins Dec 15, 2020 at 14:52Return a specified part of a date: SELECT DATEPART (hour, '2017/08/25 08:36') AS DatePartInt; Try it Yourself ». Hour,-169,Today()), then the date field will convert to date time. Like DateTimeImmutable::sub() but works with DateTime . Comment. a stopwatch) and wanted hours:minutes this would loop round as it will never read more than 24. 在学习解决方案之前，我们先来了解一下 date ()的. 4 months ago 4 months, 2 weeks, 3 days, 1 hour, 49 minutes, 15 seconds ago H stands for Hour to reduce and finally M stands for Minutes to reduce. Examples: EST, MDT, +05: Z:That's crazy, so many examples use P but that reference is so understated. Sorted by: 4. I guessed it meant period and I was searching php. Overall your answer is correct also. This is very useful when you need to describe the duration of time without taking into account when it should started or ended. 7 does is more correct than PHP 8. . 2. ”. Weitere Informationen finden Sie in der DateInterval-Dokumentation. Try this code snippet here <?php ini_set('display_errors', 1); $dateTimeObj= new. 0, PHP 7, PHP 8) DateTime::sub-- date_sub — Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object Description. Check CarbonInterval chapter for more information. , ChatGPT) is banned. Syntax: DateInterval DatePeriod::getDateInterval ( void ) Parameters: This function does not accept any parameters. Therefore it does not make sense to determine if a date coincides with an interval. If I add 1 month it will just add 1 on the month part and leave the day part (2011-01-15 will become 2011-02-15) If the day is not existing in the month we will end, we take the last existing day of it (2011-01-30 will become 2011-02-28)Method 1: Using date_diff () Function. $minutes_to_add = 5; $time = new DateTime('2011-11-17 05:05'); $time->add(new. The code can be made shorter if you desire. js, Java, C#, etc. NET data type is System. The output of strtotime() is a unix timestamp. This article will carefully assess each of those components that jointly make up the mechanism of date intervals in PHP. I solve it for my case by creating a new stdClass, this object emulates a DateInterval object, however it is not a real DateInterval object. It is best to consult the format characters table in the date() function documentation for more information about special cases. DateInterval::invert will. 1. properties of the DateInterval class and do. 2,459 1 1 gold badge 15 15 silver badges 26 26 bronze badges 1 Thanks, in my case it was definitely necessary to cut off seconds, as I do some more time based calculations and rely on proper DateInterval objects. 0. PHP DateInterval: Diff between same date in two different months is not one month. Here we are using DateTime and DateInterval for getting desired output. The title says it all. The most important thing in this case is that we use the letter “H” as the Period Designator. 3. ics file as an event end date (publishing a calendar file). you can check the 'invert' property to see if the second date is before the first date or not. Syntax:If you want it to be something very close to 1, ~0. The DATE_ADD function takes two arguments: start_date is a starting DATE or DATETIME value. 2. Since the difference is 2 days, the hours property is 0, which is what you get. But it is more readable like that. ＋ add a note. From manual: DateTime::add -- date_add — Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object. here is my code so far (does. Adding intervals like this is meant to add to the wall time. days. Object : Specifies a DateTime object returned by date_create(). W3Schools offers free online tutorials, references and exercises in all the major languages of the web. I have this string object in my php array "2013-03-05 00:00:00+00" I would like to add 12 hours to the entry within PHP, then save it back to string in the same format. The value for DateInterval could be changed In 'PT24H'. DateTime::createFromFormat — Parses a time string according to a specified format. Create your own server using Python, PHP, React. (PHP 5 >= 5. The difference is in the 'immutable' part, which means once the object is created it can never change (wiki for more info). fromChronoString method by requiring the presence of at least the hour and the minute unit. This is expected because it is not possible to overflow values like "32 days" which could be interpreted as anything from "1 month and 4 days" to "1 month and 1 day". Here's a slightly shorter approach. You can rate examples to help us improve the quality of examples. See the formatting options for the date() function. Hot Network Questions A question of random points in a square and probability of intersection of their line segmentsFloating point number stores fraction value. 9, where 9 months will become 0. The Date data type contains date values, time values, or date and time values. -169 would show 11pm, and the date would be one day prior, so 8 days before. PHP Collective Join the discussion. It's relatively compact. This article demonstrates how to get the time difference between two dates in minutes in PHP. add hour minute in datetime in php. ), because, as per PHP manual, date: Returns a string formatted according to the given format. There's more then one way to do this with DateTime which was introduced in PHP 5. For example, the following representations are valid ISO 8601 intervals, but will cause the DateInterval constructor to throw exceptions: P0. PHP Get recurring dates for specific weekday-1. If you are stuck in a position where all you have is the DateInterval, and you (like me) discover that there seems to be no way to get the total minutes, seconds or whatever of the interval, the solution is to create a DateTime at zero time, add the interval to it, and then get the resulting timestamp: Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand I had the same situation. That however will lose your nice 9 months = 0. How to create a DateInterval from a time string. PT6H: A period of six hours. You can't use date to substract or add days (hours, minutes etc. 3 build (at least on Windows, it always returns the same 6015 value). Caution: If you had a number of hours greater than one day in decimal (e. Also note that I didnt say your question was invalid or inaccurate (since you stress that). ）。. 4. How to Get the Date & Time in PHP. You can rate examples to help us. Why does date object diff on month reset to 0 after 12 months?You've answered the first question, you either need to modify('+1') or to initialize next saturday to include the last day. 0. – Stefan Gehrig. And, well, you can't do what you want to a string. You do it with: date ("Y-m-d H:i:s");And vice versa. The DateTime structure represents an. You would need to remove the minutes and seconds from your date objects, as they are not relevant in the calculation, using DateTime::setTime(date->format('H'), 0) . when user clicks on a date in calendar, it returns two datetimes (start and end) for that date. PT1H specifies 1 hour. The unit types must be entered from the largest scale unit on the left to the smallest scale unit on the right. No, this is not possible right now and it never will be. Learn more about CollectivesPHP Time Ago functionality is used to display time in a different format. Table of Contents. Ah thanks, by time element you are referring to time on a clock as opposed to days, from a comment in the docs: "To resolve ambiguity, "P1M" is a one-month duration and "PT1M" is a one-minute duration (note the time. This process is not always reversible. The period designations are single character. Since OP said nothing about DST, i presume the last. Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand ; Advertising Reach developers & technologists worldwide; Labs The future of collective knowledge sharing; About the companyCareers. – Scott Saunders Mar 23, 2010 at 14:30This class decorates PHP’s DateInterval class to provide additional means to create a DateInterval instance. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions. While if it is some sort of shedule where the events happens every day at 15:00 (18:00, etc), we need to throw that DST change away, or we're getting one hour shifted output. El método DateInterval::format() no recalcula los excesos en cadenas de hora ni en segmentos de fecha. In PHP 8 it gives us minus one year plus 11 months, 29 days, 23 hours, zero (!) minutes and 1 second! I am running the following script using the PHP. But the. 0. The output when running the above code in PHP 8. 3. More specifically, the information in an object of the DateInterval class is an instruction to get from one date/time to another date/time. How to calculate the difference between 2 timestamps in PHP. DateTime::add — Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object. The code can be made shorter if you desire. Ein DateInterval-Objekt Rückgabewerte. 2 branch of PHP ceased to be supported in August last year. Two seconds is PT2S. However, the days property of the DateInterval object seems to be broken in the current PHP5. The diff() method will return a new object of type DateInterval. This is because by default, the DateTime object is on Europe/Paris timezone. You can rate examples to help us improve the quality of examples. This includes leap years; the calendar algorithm takes the. These are the top rated real world PHP examples of DateInterval extracted from open source projects. P3WT8H — 3 weeks 8 hours. GetDecimalValue (), 2) IF FixEncodedHours > 8 then. PHP DateInterval not returning last day of the month. Converting a DateInterval to variable integer in php. You can use the DateTime object in PHP to subtract one month from a date formatted with date ('m-Y'). – marknt15. The Overflow BlogPT2H30M — 2 Hour and 30 minutes. , 1 day (60 x 60 x 24). Share. Use it or do some manual calculation.