* in Year, Month, Day, Hour, Minute and Second * Convert seconds to human readable format To do that we shall use a converting function which is written below: We shall convert the seconds into corresponding years, months, days, hours, minutes and seconds. Now we shall make the difference in second easily readable by human. $dif = abs(strtotime($date_two) - strtotime($date_one)) * Calculate the difference between two dates Take the absolute of the arithmetic difference of the timestamps.Convert the dates to UNIX timestamps using strtotime function.To calculate the difference between two dates we follow these strategies: #2: Difference between two dates in second: $date = mktime(0, 0, 0, date('m') + 1, date('d'), date('Y')) Ĭreate a date 2 days 6 months 10 years 12 hours 13 mins and 14 seconds from now: Get more information about this function here and here. For that we shall use the mktime and date. Online Demo #1: Creating some custom dates:īefore we want to calculate the difference, we might want to create some custom dates based on datetime arithmetic. Use a fallback function to automatically work between PHP 5.2 and 5.3.Make the difference readable in nice format (with years, months, days, hours, minutes, seconds etc).Calculate difference between any two dates.Create any custom date using PHP mktime arithmetic.After reading this tutorial you will be able to: But in case your server doesn’t provide PHP 5.3 you may use the older style instead. Personally I prefer using PHP 5.3 style as it far less complicated and doesn’t depend upon integer range. We will cover php datetime calculation for both the procedural style ( PHP 5.2) as well as OOP style ( PHP 5.3).
PHP 5.2 HOW TO
So, in this tutorial we are going to explain how to do some basic arithmetic of date and time in PHP using some of the built in PHP APIs. But in case MySQL timezone is different or you want to do some date time arithmetic in your web application without database, then you need to know the fundamentals of datetime calculations of PHP. It is useful if your MySQL server runs on the timezone you want. Previously we have talked about MySQL datetime arithmetic.
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