Shulou(Shulou.com)06/01 Report--

This article mainly explains "php how to get the current date is the week of the year". The explanation in the article is simple and clear and easy to learn and understand. please follow the editor's train of thought to study and learn "php how to get the current date is the week of the year"!

In php, you can use the date () function with the "W" character to get the week ordinal of the current date, the syntax "date ('W')"; a number indicating the week ordinal of the year is returned.

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In php, you can use the date () function to get the week ordinal of the current date.

The date () function can format a local time or date, and its syntax format is as follows:

Date ($format [, $timestamp])

The parameters are described as follows:

Format: indicates the formatted time format and can contain some characters with special meaning.

$timestamp: indicates the timestamp to be formatted, is an optional parameter, and defaults to the current time (when $timestamp is omitted). It can also be understood that the default value of $timestamp is time ().

When you set the $formatc parameter value of the date () function to "W" and the $timestamp parameter is omitted or time (), you can get the week ordinal of the current date.

W: numbers are used to represent the week ordinal of the year, starting on Monday, according to the ISO-8601 standard format (PHP 4.1.0 added). For example: 42 (the 42nd week of the year).

Example:

Let's see if it is:

Counted on the calendar, it was indeed the eighth week.

Extended knowledge: special characters that can be recognized in the parameter $format format string

The format character describes the day of the returned value example d month, using two digits to indicate, if less than two digits, the abbreviations of the week from 001 to 31D (using three letters) Mon to Sunl (lowercase letters of "L") the English words Sunday to SaturdayN according to the ISO-8601 standard format Use a number to denote the day of the week (PHP5.1.0 plus) 1 (for Monday) to 7 (for Sunday) the English suffix (using 2 characters) after the number of days per month in S (using 2 characters) st, nd, rd, or th. You can use a number with j to represent the day of the week 0 (for Sunday) to 6 (for Saturday) z use a number to represent the day of the year 0 to 365W according to the ISO-8601 standard format, use a number to represent the week of the year, each week begins on Monday, (added in PHP 4.1.0) for example: 42 (week 42 of the year) F month English words For example, January or JuneJanuary to Decemberm use two digits to represent the current month 01 to 12m month abbreviations Jan to Decn use numbers to represent the current month 1 to 12t the number of days in a specified month 28 to 31L whether the specified year is a leap year if it is a leap year the value is 1, otherwise use a number to represent the year according to the ISO-8601 standard format This is the same as Y (PHP 5.1.0 add) 1999 or 2019Y uses four digits to represent a complete year for example: 1999 or 2019y uses two digits for example: 99 or 03a morning and afternoon values am or pmA uppercase morning and afternoon values AM or PMBSwatch Internet standard hours 000g to 999g hours 1 to 12G hours to 12G hours to hours 0 to 23 hours hours to hours Leading zero 01 to 12H uses a 24-hour format to represent hours, leading zero to 23i uses two digits to represent minutes, leading zero to 59 > s uses two digits to represent seconds, and leading zero to 59 > u milliseconds (added in PHP 5.2.2). It should be noted that the date () function always returns 000000 because it only accepts the integer parameter, while DateTime::format () supports milliseconds for example: 654321e time zone identification such as: UTC, GMT, Atlantic/AzoresI (uppercase "I") is daylight saving time 1, otherwise it is the number of hours between 0 and GMT, for example: + 0200p and Greenwich time (Greenwich mean time) Hours and minutes are separated by colons. For example, the time zone in which the local machine is located: EST, MDT (full text format under windows, such as "Eastern Standard Time", the Chinese version will display "China Standard time") the number of seconds of Z moveout offset, the time zone offset on the west side of UTC is always negative. The time zone offset on the east side of UTC is always positive-43200 to date in 43200cISO-8601 format 2014-02-12T15:19:21+00:00rRFC 822 for example: Thu,21 Dec 2000 16:01:07 + 0200U the number of seconds since the UNIX era (January 1 1970 00:00:00 GMT) and the same timestamp returned by time ()

Thank you for your reading, the above is the content of "how to get the current date is the week of the year". After the study of this article, I believe you have a deeper understanding of how to get the current date of the week of the year, and the specific use of php still needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.