The iterator seems to check the time as well as the date, it excludes the end element if the time in the endDate is less that or equal to the time in the start date. 2. I get the start of this event and the duration to add to get the end. PHP check for not > 0. This method will handle intervals created via the DateInterval contructor more or less correctly,. So if you have a date which is May 31, 2016 and want to subtract 3 month intervals, it will: Go back 3 months (in the list of months, don't think days yet), resulting in 'February'. A DateInterval object is created with the parsing of a PHP duration by the constructor of the DateInterval class which also stores individual values within its properties. Adds the specified DateInterval object to the specified DateTime object. I know I'm a little late but I hope this saves someone a lot time and lines of code. 3. If the duration contains time elements, that portion of the specification is preceded by the letter T. Each format character must be prefixed by a percent sign (%). Find centralized, trusted content and collaborate around the technologies you use most. My snippet lo. 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 companyDateTimeInterface::format; マニュアルに十分な説明があるので、具体例の紹介は割愛します。 時間の入力書式. Adding an interval to a DateTime object. Is there a way of doing this without recursion, perhaps using DateInterval? N. Then, when converting from seconds, it would divide in that order, each time taking the modulo of the previous operation, until only <60 seconds. If the DateInterval object was created by DateTimeImmutable::diff () or DateTime::diff (), then this is the total number of full days between the start and end dates. Comparing PHP DateInterval. The format starts with the letter P, for "period. Source code on GitHub Gist. Meta Stack Overflow. The date_diff() is an inbuilt function in PHP which is used to calculate the difference between two dates. if you want all mondays between two dates, just get the julian dates which have mod 7 give 1 and convert them back to gregorian date format. DateTime::createFromFormat — Parses a time string according to a specified format. DateInterval string Problems. Format DateInterval as ISO8601. I have released it under the MIT license, so feel free to build on top of it or use it in your own project. There are two ways to convert it. Show Hide. I've been deciding to get these values from datetime variable and subtract the time interval. Each date is encapsulated in a DateTime object, and then a difference between the two can be made:. W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Each format character must be prefixed by a percent sign (%). 2. " Each duration period is represented by an integer value followed by a period designator. date format | delete 00´s when year has 00 month or day. In case of failure, this function returns the boolean value false. The format specifier is the same as supported by date, except when the filtered data is of type DateInterval, when the format must conform to DateInterval::format instead. Updated. DateTime::__construct — Returns new DateTime object. The Overflow BlogBug #74013: DateTime not able to handle DateInterval on february: Submitted: 2017-01-30 11:23 UTC: Modified: 2017-02-01 09:55 UTC: From: etienne dot chabert at gmail dot comDateInterval::format() does not handle "carry-over points" Submitted: 2010-02-12 20:02 UTC: Modified: 2010-02-17 04:59 UTC: From: m dot kurzyna at crystalpoint dot pl: Assigned: kalle : Status: Closed: Package: Documentation problem: PHP Version: Irrelevant: OS: Linux: Private report: No: CVE-ID: None: View Add Comment Developer. DateTime::createFromImmutable. 20/5. In the Format method, we can convert the DateTime object to a string. I have extended the php class. new DateInterval ('P2Y4DT6H8M'); Is there any way to revert it, meaning to get from the DateInterval instance the originally formatted input: 'P2Y4DT6H8M'. So "5 minutes" instead of " 0 hours, 5 minutes"For now I don't care about timezones and just want to have a correct calculated value of how many days are between two dates. 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 companyNote you don't need DateInterval, as DateTime (like strtotime()) takes relative phrases as an argument, so you can just do something like new DateTime('+15 minutes'); – Alex Howansky Nov 2, 2022 at 15:39Let's say I have a date in the following format: 2010-12-11 (year-mon-day) With PHP, I want to increment the date by one month, and I want the year to be automatically incremented, if necessary (i. PHP abs negative number. Follow edited Jun 20, 2020 at 9:12. Says DateInterval format is wrong. 1. –(PHP 5 >= 5. 2. For now I am using this code to find the diffeencePHP DateInterval. DatePeriod objects can be used as an iterator to generate a number of DateTimeImmutable or DateTime object from a start date, a interval, and an end date or the number of recurrences. 4. As Carbon extends DateTime it inherit its methods such as diff() that take a second date object as argument and returns a DateInterval instance. Hot Network Questions Tricky Integral: Evaluating Renormalized Ultraviolet "Divergent" IntegralI've written some code for entering recurring events. DateTimeInterface::getOffset — Returns the timezone offset. 0, PHP 7, PHP 8) The DateInterval helps in storing a fixed time interval. does not have F nor f similarly to DateInterval::format that supports split seconds. timezoneの設定とDateTimeクラスの使い方について書いてます。. PHP time(): Returns the current time measured in the number of seconds since the Unix Epoch (January 1 1970 00:00:00 GMT). here is my code so far (does. How can I swap a character in a string with another character in that same string. – Devon Bessemer Sep 24, 2015 at 13:47 DateInterval::format () メソッドは、 時刻文字列や日付セグメントでの繰り越しを再計算しません。. Learn more about CollectivesSo it's pretty simple. In this example, the difference between two dates is divided into years, months, and days as part of the PHP calculate days between two dates mechanism. Learn more about CollectivesI 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. First of all, DateInterval constructor method takes one parameter named $interval_spec which is string. PHP code demo Try this solution you can change from one month to another month (not year) and then check. DateTime::add () - Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object. G should be the same, but without leading zeroes though. 2. 2 から追加された DateTime クラスの2種類が存在します。. 0 and, works with all the later versions. PHP has a lot of methods and functions to help you manipulate dates in a variety of ways. 2. Without PHP 5. Collectives™ on Stack Overflow. Method compare makes a value comparison. how to convert php date format to 3 arguments-1. Example. VersionThe value for DateInterval could be changed In 'PT24H'. 1. 2. diff () returns a DateInterval which has a public days property. 3. This question is top on a google search for "php datetime add one year", but severely outdated. format: Required. It is best to consult the format characters table in the date() function documentation for more information about special cases. such as using a DateInterval object representing relative time specifications such as next weekday, a DateInvalidOperationException is thrown. 1. It is probably not a very portable solution, but it seems to be working just fine in php 5. Date and Time Related Extensions. Or if you're confident of the format, split up the string with explode() or even substr and pass the necessary parts into the mktime function. In order to compare those two dates we use the method diff() of the first. Learn more about CollectivesHow do I get current date/time on the Windows command line in a suitable format for usage in a file/folder name? 1 Find dates between 2 dates with custom interval and without overflow172 1 5. Daylight Savings Time Bug (PHP < 8. DateTime::sub() - Sustrae una cantidad de días, meses, años, horas, minutos y segundos de un objeto DateTime DateTime::diff() - Devuelve la diferencia entre dos objetos DateTime DateTime::modify() - Altera la marca temporal ＋add a noteDateTimeComputed: Calculate the date value into a format that can be displayed in the widget. Improve this answer. 31 years, 6 months, 14 days Code language: PHP (php) Check out all the DateInterval format parameters. This function is especially useful when you want to display dates and times in a specific format, or when you need to manipulate date and time values. My code to add one day to a date returns a date before day adding: 2009-09-30 20:24:00 date after adding one day SHOULD be rolled over to the next month: 1970-01-01 17:33:29 <?php //add d. 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". Description. Adding and Subtracting Dates and Times . First, create a DateTime object from your base time. Function Description. See the example below, where we are adding an interval of 7 days and printing a message on the screen:@niceman Nope, date_diff doesn't work (date_diff() expects parameter 1 to be DateTimeInterface, object given) and date_create() doesnt works too (not accepting normal nor formated dates of type DateInterval)PHP DateInterval: Diff between same date in two different months is not one month. Nota: . PHP Collective Join the discussion This question is in a collective: a subcommunity defined by tags with relevant content and experts. For example when the user inputs. The date filter accepts strings (it must be in a format supported by the strtotime function), DateTime instances, or DateInterval instances. For instance, to display the current date,. PHP에서의 DateTime은 늘 문자열로 처리되어 를 엄청나게 사용하게 되고, 기간 비교를 위해 timestamp를 직접 다뤄야 하는 번거로움 등 불편함을 다 적기에 시간이 부족할 정도다. DateInterval::format() - Formats the interval; DateTime::add() - Modifies a DateTime object, with added amount of. . Otherwise, days will be FALSE. Like DateTimeImmutable::add() but works with DateTime . 8. 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. Return Value: It returns a DateTime object after subtracting interval. Check if 1 timestamp is later then current. 3. Numeric representation of a month, with or without leading zeros. epoch time), a DateTime object, and a string. date, and this for DateInterval): // Return adjusted start and end times as an array. f. Stack Overflow help chat. format character Description Example values % Literal % % Y: Years, numeric, at least 2 digits with leading 0: 01, 03: y: Years, numeric: 1, 3: M: Months, numeric, at least 2 digits with leading 0: 01, 03, 12: m. DateInterval::format () メソッドは、 時刻文字列や日付セグメントでの繰り越しを再計算しません。. Another elegant and reliable method of fetching the previous month’s date is to use PHP’s DateTime(). For procedural style only: A DateInterval object. 2. Execute DateInterval::format Online. 2012-04-03 is a Tuesday. 3. Table of Contents ¶. format: Required. PHP Terms → . Find centralized, trusted content and collaborate around the technologies you use most. This field allows the user to select an interval of time. Description: ----- From PHP 7. Also note that I didnt say your question was invalid or inaccurate (since you stress that). DateTime::add — Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object. PHP date_interval_format() Function. 4. You don't need to pass time() to strtotime, as it is the default. 1. 0, PHP 7, PHP 8) DateInterval::format — Formats the interval Description ¶ public DateInterval::format ( string $format ): string Formats the interval. I want get back 3 days from that point in time. There's more then one way to do this with DateTime which was introduced in PHP 5. DateTime::__construct — Returns new DateTime object. 0, PHP 7, PHP 8) DateInterval::format — Formats the intervalcheckdate() date_add() date_create_from_format() date_create() date_date_set() date_default_timezone_get() date_default_timezone_set() date_diff(). 以下のメソッドで使われます。この書式は他とは大きく見た目が異なりますが、非常にシンプルなので理解に困ることは無いでしょう。 DateInterval::__constructThe string representation of the interval must follow a specific format. see documentation The DateInterval::format() method does not recalculate carry over points in time strings nor in date segments. 2. The characters mentioned in the table below can be used in the format parameter string. 1. TL;DR do not use UNIX timestamps. PHP Collective Join the discussion This question is in a collective: a subcommunity defined by tags with relevant content and experts. So I wrote my own bulky method but it feels like it should be simpler than this: public TimeSpan FromPhpDateInterval (string phpDateInterval) { // Method to parse php's interval_spec (An interval specification) // The format starts with the letter P, for "period. Esto es así porque no es posible analizar valores como "32 días" el cual podría ser interpretado como cualquier cosa desde "1 mes y 4 días" hasta "1 mes y un día". For example, Friday 12/5 + 3 business days = Wednesday 12/10. Find centralized, trusted content and collaborate around the technologies you use most. This should be used here and no detour via date, gmdate or DateTime should be taken. Ask Question Asked 8 years ago. For example, if. 3. Example if you need to display the time of 5 minutes and 2 seconds by showing a leading zero (05:02). 1. Example. 10):Here is the working code for you: You should use DatePeriod which takes start-date, date interval, and end-date as arguments. ini file depending on whether it's running from the CLI or as a CGI from the webserver. 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" . 0, PHP 7, PHP 8) DateInterval::createFromDateString — Establece un objeto DateInterval desde las. Two seconds is PT2S. 3 build (at least on Windows, it always returns the same 6015 value). Some of the options are: d - The day of the month in the range of 01 to 31;. Return time difference as integer. See DateInterval::format () . DateTime::__construct () Returns new DateTime object. - GitHub - sudopeople/php-float-interval: Create PHP DateInterval objects from floating point numbers for va. DateTime will return itself or false on failure for every method call. 0825% reliability fail you. PHP DateInterval format minutes and seconds with leading zero. 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:PHP DateInterval::format - 30 examples found. DateTime class how to deal with negative date interval. See below example to Add 2 Day interval in date. Right now, they are either warnings/errors, or plain “Exception” or “Error”. We can use the class DateInterval to add or subtract some interval in a DateTime object. Score:. Stack Overflow is leveraging AI to summarize the most relevant questions and answers from the community, with the option to ask follow-up questions in a conversational format. e. It uses the "natural" order of the variables in php DateInterval class. The DateInterval:: format() function is used to format the interval. ini or declared in Twig -- see below), but you can override it by explicitly specifying a timezone: 1. DateTimeImmutable::add — Returns a new object, with added amount of days, months, years, hours, minutes and seconds; DateTimeImmutable::__construct — Returns new DateTimeImmutable object; DateTimeImmutable::createFromFormat — Parses a time string according to a specified format;. According to comment by kevinpeno at 17-Mar-2011 07:47 on php. 1. DateTime::setTimestamp() - Sets the date and time based on an Unix timestamp DateTimeImmutable::setTimestamp() - Sets the date and time based on a Unix timestamp DateTimeInterface::format() - Returns date formatted according to given format ＋add a. There are three methods that can modify the value of a DateTime instance: add, sub and modify. DateInterval::format (PHP 5 >= 5. DateTimeImmutable::sub() - Subtracts an 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 noteI want to create an array of objects for each day that the posted interval of time stretches, would this be a DateInterval object? if so then in the above posted values i want to get an array with the followingPHP Collective Join the discussion This question is in a collective: a subcommunity defined by tags with relevant content and experts. So PHP should add that with each iteration. 3. B. In this quick tip, I will show you how to add days to a date in PHP using. Check CarbonInterval chapter for more information. strtotime produces a Unix timestamp as an integer which is helpful if you are for example sorting dates in php. The best course of action is using PHP's DateTime (and DateInterval) objects. PHP Date DateInterval::format ( string $format ) Each char must be prefixed by a percent sign (%) How a date interval is represented Example 1 $interval=new DateInterval. And since there's no 25 o'clock, it's the wrong thing to use. Collectives™ on Stack Overflow. But still not correct. php. It also allows you to specify the format of the output. The procedural version takes the DateTime object as its first argument. Use it or do some manual calculation. Modified 8 years ago. If the DateInterval object was created by DateTime::diff(), then this is the total number of days between the start and end dates. Otherwise. DateInterval::invert will be 1 if the second date is before the first date, and 0 if the the second date is on or after the first date. 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. You will get the result object, which you can loop thru to get the desired dates between the 2 dates:The format specifier is the same as supported by date, except when the filtered data is of type DateInterval, when the format must conform to DateInterval::format instead. This is expected because it is not possible to overflow values like "32 days" which could be interpreted as anything from "1. Adding or subtracting interval to a DateTime instance is quite easy. It seems when creating time-only DateInterval objects, we have to use T too, instead of just P. So, if I read correctly the PHP documentation I must. 20/5. days. DateTimeInterface::diff — Returns the difference between two DateTime objects. Indeed 22-09-2008 will be parsed as 22 September 2008, as it is the only reasonable thing. The PHP Date Format function is written as. mktime alternative. DateTime::createFromFormat — Parses a time string according to a specified format. Syntax. Right now the code assume that both the server and the time in the XML. I used DateInterval::format to display a human readable countdown clock in years, months, and days. Collectives™ on Stack Overflow. DatePeriod is not compatible with negative intervals. In PHP 7 this works (gives e. . The trickiest part is a user can create an event and have it repeat on selected days of the week ever x weeks. Calculate the interval between two dates, then format the interval: <?php. The format is as follows: PnYnMnDTnHnMnS. Table of Contents. 0. To do so you can simply use DateInterval and loop through it yourself like this: (not start should be ahead of end if you use a negative intervalWe 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. The calculation in the last step does not take into account the hours, minutes and seconds in the date difference (as they're not included in the %a format). 注意: . I'm trying to create a simple function which returns me a date with a certain number of subtracted days from now, so something like this but I dont know the date classes well:What is the simplest way to get the difference in days between two PHP DateTimes, considering midnight as a day change (just like the DATEDIFF(DAY) SQL function does)?. 4 answers. Represents a date interval. 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. Share. El método DateInterval::format() no recalcula los excesos en cadenas de hora ni en segmentos de fecha. A duration is the continuous portion of time between two datepoints expressed as a DateInterval object. We will begin with an overview of DateInterval and then move on to actual addition. 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. It sounds like the CLI php. 5. It doesn't matter if the object is the one diffed or doing the diffing (i. 51k; asked Mar 26, 2014 at 13:45. これは意図的な仕様です。. . DateInterval has a special format method for the output. This code get next Monday and decrease it for 1 week. PHP - DateTime->add not working. Since I wrote the original article about Handling Date and Time in PHP and MySQL several years ago, it seemed like now was a good time to update it for object-oriented PHP. Says DateInterval format is wrong. e. Following example demonstrates the usage of the date_add() function −If there are more days in the current month, than the month being landed on, the excess overflows to the following month. 4. The date filter accepts strings (it must be in a format supported by the strtotime function), DateTime instances, or DateInterval instances. ), then the European d-m-y format is assumed. MySQL datetime: The DATETIME type is used for values that contain both date and time parts. DateTime (and DateTimeImmutable) has a modify method which you could leverage to modify the time by adding 20 hours and 20 minutes. You only need to use the specific DateInterval format string. なぜなら "32 days" のようにオーバーフローした値は "1 month and 4 days" から "1 month and 1 day" までのどれとでも解釈可能だからです。. We can rule out add and sub immediately because they work in terms of a DateInterval which does not have sub-second precision. echo date('Y-m-d', strtotime("+30 days")); strtotime. 目次. Don't manually build json docs, I can't imagine what you think json_encode() is for, but it's for building the entire object. f. 4. The DateInterval class is useful for storing a. 3+ version, than simply add and subtract method work for it. Adding any minutes to a given time is very similar to adding any days to a given date. days. $time can be different things, it has to respect the datetime format. Syntax: Object oriented style:PHP에서의 DateTime은 늘 문자열로 처리되어 를 엄청나게 사용하게 되고, 기간 비교를 위해 timestamp를 직접 다뤄야 하는 번거로움 등 불편함을 다 적기에 시간이 부족할 정도다. EDIT:I tried to add +2 hours to date function visualization in php (wordpress). Program 2: This program uses DateTime::sub () function to subtract the given interval from date object. This function accepts an interval and a format string as parameters and, formats the given interval in. DateTime::createFromFormat — Parses a time string according to a specified format. Even with DateInterval though you'll have to do some calculations, since it'll break down an interval into days and hours. While, on the surface, echoing a date in the future brings a small bit of accomplishment, it can be quickly eradicated when one is tasked with. 1. PHP DateInterval format minutes and seconds with leading zero. This is expected because it is not possible to overflow values like "32 days" which could be interpreted as anything from "1 month and 4 days" to "1 month and 1 day" . The php class DateInterval has its specific format of input such as. If you are using PHP 5. It seems like several things are wrong with your question. Here's an example:--TEST-- DateInterval::format() with timezone, except %a --DESCRIPTION-- %a is covered in a separate test. . publicstringDateInterval::format( string$format) Formats the interval. 0. Below programs illustrate the DatePeriod::getDateInterval () function in PHP: Program 1: <?php. The DateTime class provides options for object and procedural style operations. Data/Example: Today : 2013-07-16 12:37 Event Data : Start Date : 2012-04-03 12:30 Interval : 2 Interval Type : week. [2009-06-19 17:19 UTC] pierre dot inglebert at insa-rennes dot fr Description: ----- DateInterval::format method just returns the parameter given. A PHP interval is also used for the storage of a relative time string in a specific format which is supported by the constructor of the DateTime object. So, whenever there is a request to change the format everywhere, you don't need to change the code everywhere. DatePeriod::getDateInterval. EDIT: After everyones suggestions i've tried setting this at the top of my php code: date_default_timezone_set("GMT"); and I tried using date('Y-m-d H:i:s') to do the comparison to figure out the diff, but its saying "3 hours ago" rather than the 10 hours from now. How to format date in PHP from a string of concatenated numbers? 0. Don't print zeros. During daylight savings changes 24 hours is not the same as 1 day, which PHP will arrange for you with the proper timezone configuration. Current (2017) Practice is to use DateTime. e. DateTime has several. echo date_create('2011-04-24')->modify('-1 days')->format('Y-m-d'); Running it on Online PHP Editor. G should be the same, but without leading zeroes though. However, the days property of the DateInterval object seems to be broken in the current PHP5. 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. " Each duration period is represented by an integer value followed by a period designator. 5. See DateInterval::format(). 1 min read September 30, 2020. The easiest way to get first day (Monday) of current week is: strtotime ("next Monday") - 604800; where 604800 - is count of seconds in 1 week (60*60*24*7). See DateInterval::format(). As you have already said yourself , you tried to get duration from Youtube API. I want to send a reminder email. (PHP 5 >= 5. PHP DateInterval Class: The PHP DateInterval class is used to represent an interval between two dates or times. 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. My suggestion is to separated the variable not copy from the origin. Minutes or Seconds without a leading 0 PHP. Just click on “download zip” or do a git clone. The reason why you have the issue is simply that DateTime and DateInterval have different format types, DateInterval indeed requires to escape with a %-sign all the formatting symbols while DateTime uses the same format styles as date function. Featured on MetaDateTime class Methods in PHP. DateTime::add — Adds an amount of days, months, years, hours, minutes and seconds to a DateTime object. Output: 00-0-1 22:0:0 In this example we created two DateTime objects. 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 companyWhile being the most BC-safe option, this would be completely different to the rest of the PHP date APIs. PHP date interval format() Function - The date_interval_format() function is an alias of DateInterval::format(). Find centralized, trusted content and collaborate around the technologies you use most. To achieve what you want going the object oriented style, you have to create a DateTime object first:31 years, 6 months, 14 days Code language: PHP (php) Check out all the DateInterval format parameters. This should be used here and no detour via date, gmdate or DateTime should be taken. 2. You also need to call ->format('%d') where you're building the sql statement. And, well, you can't do what you want to a string. You can use '%d' to get the. Follow edited Sep 2, 2015 at 8:44. $i = new DateInterval('P1D'); $i = DateInterval::createFromDateString('1 day'); $i = new. 0, PHP 7) DateInterval::format— Formats the interval. The date () function is a simple and easy-to-use function for getting the current date and time. Out of scope of this RFC is changing and improving. And on top of that it's very easy to use. The DateTime class contains add() and sub() methods to manipulate a DateTime instance’s value. days. Creating. Difference. When using the ISO 8601 duration format, T is the time designator that precedes the time components as explained here. See Also. But the. Collectives™ on Stack Overflow. Both methods belong to DateTime object itself. I also attempted to do it in a way which would fail to preserve number of days in each month (rounds to 30), leap years, etc: 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: Es 1 si el intervalo representa un periodo de tiempo negativo y 0 si no. Jan - June 2015, July - Dec 2015, Jan - June 2016. PHP DateTime formatting works but DateInterval formatting not working. The PHP documentation used to have Dates in the m/d/y or d-m-y formats are disambiguated by looking at the separator between the various components: if the separator is a slash (/), then the American m/d/y is assumed; whereas if the separator is a dash (-) or a dot (. 1, 7. Possible Duplicate: Get timestamp of today and yesterday in php I was wondering if there was a simple way of getting yesterday's date through this format: date("F j, Y");you can use DateInterval::createFromDateString for readable code than using format. # Manipulation Though in reality, we can never manipulate time, with DateTime , we can actually do that. Una de las cosas que más quebraderos de cabeza puede dar cuando estás desarrollando es trabajar con fechas. The Overflow BlogSee the DateInterval constructor documentation: The format starts with the letter P, for "period.