PHP and JavaScript, it can be used as a guideline for any API that has to transport those values.Īdditionally, API design guidelines are such powerful rules/techniques to provide sustained communication between two Meanwhile, this text shows a format to normalize datetime values between two specifics programming languages, In this way, theįormat has to be written as described below: //now $date = new \ DateTime () echo $date -> format ( 'Y-m-d\TH:i:s.vP' ) Considerations However, RFC3339_EXTENDED was only implemented in PHP 7 as a DateTimeInterface constant. now $date = new \ DateTime () echo $date -> format ( DateTime :: RFC3339_EXTENDED ) JavaScript Date and PHP DateTime support microseconds and the constant RFC3339_EXTENDED can be used as the properįormat. Var datetime = new Date(' format ( DateTime :: W3C ) ?>') Microseconds Now, we only have to integrate both codes, like a JSON/Rest API: $date = new \ DateTime ( ' 10:00' ) $ret = $date -> format ( DateTime :: W3C ) echo json_encode ( $ret ) Įven if the PHP is mixed with JavaScript: $date = new \ DateTime ( ' 10:00' ) ?> Now, here is the code: //Timezone +0200 $date = new \ DateTime ( ' 10:00' ) echo $date -> format ( DateTime :: W3C ) //Timezone -0300 $date -> setTimezone ( new DateTimeZone ( 'America/Sao_Paulo' )) echo $date -> format ( DateTime :: W3C ) Purpose, the constant W3C is going to be assumed. Those constants have the same format ( Y-m-d\TH:i:sP) and can be used in the same way. On the other hand, DateTimeInterface has three equivalent formats for ISO8601: UseĭateTime::ATOM or DATE_ATOM for compatibility with ISO-8601 instead. Note: This format is not compatible with ISO-8601, but is left this way for backward compatibility reasons. Is” just for backward compatibility reasons. Although it is named as ISO8601, the format does not correspond to ISO8601 and it is maintained “as That is not necessary because PHP implements an “ almost powerful” library called Date\Time.ĭate\Time has a bunch of classes, however, DateTime, and its interface DateTimeInterface, are going to be used here to reach the goals.ĭateTimeInterface has a few constants to be used with the method DateTime::format() and it has the format Of GTM-0300 because the computer, where the code runs, was set to Brasilia Standard Time.īut how could the proper datetime format be retrieved from PHP? Should that format be created? The answer is a simple no. The date is 12 pm on October 3, 2018, and the time was converted to 09 am The ISO8601 format is a good choice because the timezone is carried with the datetime and it is not necessary to worryĪctually, it is evident in the example above. In this way, JavaScript Date can be created ThereĪre still many differences in how different hosts parse date strings, therefore date strings should be manually parsedĪctually, ECMAScript 5 was released in December 2009, almost a decade ago. It is not recommended to use Date.parse as until ES5, parsing of strings was entirely implementation dependent. There is a note below Date.Parse() method that says: Method (IETF-compliant RFC 2822 timestamps and also a version of ISO8601). The string should be in a format recognized by the Date.parse() Therefore the constructor has a few ways to instantiate a Date object, only one constructor is going to be focused,ĭateString: String value representing a date. Necessary to understand which formats are supported by JavaScript Date object and that information can be found in Even more, the main point here is to find a common format that is fully supported in both sides. Weird implementations to cope with that can be found.Īlthough date parts (eg.: year, month, day, etc…) can be sent in separated fields, it does not follow a good APIĭesign. Sometimes the difference on JavaScript or even on PHP has to be handled. It means that JavaScript supports different formats of date and PHP’s DateTime, on the other hand, is 1-based. This means that January = 0 and December = 11. Note: The argument monthIndex is 0-based. In this way, questions like this and this can be found in Stackįurthermore, the MDN Date’s manual has explained what happens with month format. Sometimes, to convert from received datetime format to JavaScript Date object supported format Often when working with Rest API, or ajax requests, the datetime information must be sent from back-end to front-end.
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