Getting the week number for a date in PHP is simple. Note: In PHP, the week starts with Monday, so if the time-string is given as “this week” the output will be timestamp of Monday which can make readable by passing it through date() function. There are many different way to find the number of days between two dates in PHP.. The PHP Date() Function. The Unix timestamp contains the number of seconds between the Unix Epoch (January 1 1970 00:00:00 GMT) and the time specified. If you'd rather begin with some other day of the week, say … System Dependent, typically -2147483648 through 2147483647 . How to calculate ISO week numbers, convert week numbers to dates, and get the number of weeks in a year, in PHP and other programming languages. The code below adds two new functions to the Date object. Example. Week numbers in JavaScript How to get the week number from a date. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. Prior to PHP 5.6.23, Relative Formats for the start of the week aligned with PHP's (0=Sunday,6=Saturday). The 2nd of December, 2002. To get the ISO week number (1-53) of a Date object, use date.getWeek(). Program 1: Get the default first day of a week when the time-string is “this week”. Since 5.6.23, Relative Formats for the start of the week align with ISO-8601 (1=Monday,7=Sunday). PHP Date and Time. Seconds since the Unix Epoch, similar to the values returned by time() and used by date(). PHP date: Exercise-17 with Solution. Write a PHP function to get start and end date of a week (by week number) of a particular year. If omitted, the current date and time will be used (as in the examples above). To get the corresponding four-digit year, use date.getWeekYear(). Add this to your source code. Create a Date With mktime() The optional timestamp parameter in the date() function specifies a timestamp. An explanation of the code snippet above: We set our YYYY-MM-DD date string to “2002-12-02”. The PHP mktime() function returns the Unix timestamp for a date. Week number in PHP. Just use the powerful date() function that takes a format string and an optional unix timestamp as arguments. If you omit the second argument, it returns the current date/time in the given format. i.e. In this tutorial you will learn how to extract or format the date and time in PHP. Sample week and year : 12, 2014 Week number .net Calendar with week numbers … The PHP date() function convert a timestamp to a more readable date and time.. In this article we will explain how to calculate the number of days between two dates in PHP. 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