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Range of utime php1/7/2024 ![]() Going over docs carefully and leaving as much as possible to native language functions is best approach to ensure nothing gets miscalculated.įunction could (and should) be extended a bit to handle corner cases better, but works fine for my current needs. The range () function is an inbuilt function in PHP which is used to create an array of elements of any kind such as integer, alphabets within a given range (from low to high) i.e, list’s first element is considered as low and last one is considered as high. It is smart enough to handle daylight saving time issues and is way more reliable than using bunch of seconds for interval. It takes timestamp value of current date and adds interval to it. interval to generate dates (defaults to one day) īulk of function is simple loop that creates dates by skipping in specified interval until out of range.range as two dates (remember to pick bulletproof format).Will show how to work around that in my function. That only works until you hit daylight saving shift or something as obscure. Since here I am writing for primary audience with different (and crazy, who puts month before day?) date format I stick to ISO formats in clear descending order.Īnd finally since programs usually deal with time as amount of seconds it seems easy to treat time spans as set of those (60*60*24). PHP manual has proper list of date formats. PHP does its best to interpret them, but for X possible ways to write down date there are twice that ways it can go wrong. You can format output however you like, but it is important to be very careful with date inputs. The comparator function will accept two date arguments which will be converted to integer. Functions that are sensitive to that will even try to raise fuss if it isn’t set. The strtotime () function is a PHP function which changes a given date in any format into a timestamp which is a large integer in nature and then while sorting the array we can easily use the PHP usort () function by defining a comparator function. In modern versions of PHP (which you should be using) is is handled by date_default_timezone_set function (or date.timezone in configuration). It is important to establish time zone environment. I needed range of days for one graph in Google Charts so I tried to make compact, flexible (and me-proof) function to generate range of dates. Note that the format for retrieving the full textual representation of the day of the week is a lowercase L not a capital i. We then got the day of the week by giving the date function the l format and our unix timestamp. ![]() There are different time formats (almost freeform), time zones, daylight saving offsets and who knows what else to consider.Īs with any tricky task my rule of a thumb is to trust programming language and don’t trust Googled-up snippets too much. By default, microtime() returns a string in the form 'msec sec', where sec is the number of seconds since the Unix epoch (0:00:00 January 1,1970 GMT), and msec measures microseconds that have elapsed since sec and is also expressed in seconds. We converted our date string into a unix timestamp using PHP’s strtotime function. For modern projects use something more recent, like the Period library.ĭate and time values are nightmare in the world of binary (or decimal at best).
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