if the years do not match add the appropriate number of days. Note: These functions depend on the locale settings of your server. You can then use the date/time functions to format the date and time in several ways. find the difference in days since the start of the year PHP Date/Time Introduction The date/time functions allow you to get the date and time from the server where your PHP script runs. Can't calculate negative difference in dates $last = is_numeric($last ) ? $last : strtotime($last ) Output: The difference in minutes is: 21 minutes We can also find the time difference in minutes using the following method.$first = is_numeric($first) ? $first : strtotime($first) No installation is required to use these functions. Installation The PHP math functions are part of the PHP core. It returns the floating-point remainder after the division. Example Return the current time as a Unix timestamp, then format it to a date: set the time zone of the server to UTC time ( date. First convert any your dates from 'Y-m-d H:i:s' format to Linux time-stamp using strtotime function. php > print datedefaulttimezoneget () America/NewYork. So I made my own function using getdate() a function that returns an array of innformation about the timestamp. You can check which value PHP is using with datedefaulttimezoneget (). I could convert the date string to UNIX timestamp and divide by 60*60*12, but some days have a greater or lesser number of hours, sometimes there's eaven a leap secound. My goal was to find the difference between the dates like: date('Ymd',$end)-date('Tmd',$begining) Ä«ut that is likly to fail because there isn't 99 month in a year and 99 days in a month. Most of the functions given on the problem fails if the event has a duration form friday at 17:00 to sunday at 15:00. This should work, just replace the times in the time diff with the time the task started and the current time or the time the task had ended.I was trying to calculate the difference of two dates for the purpose of showing the duration of an event.
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