How to use php code to calculate the week of a specified date in a year

This article introduces the knowledge of "how to use php code to calculate the week of a specified date in a year". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

In php, you can use the date () function to calculate the week of the year when the specified date is specified. You only need to set the first parameter of the function to "W", and the ISO-8601 number representing the week of the year will be returned; the syntax "date ('date, a timestamp for a specified time)".

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

In PHP, the date () function can be used to calculate the week of the year on a specified date.

The date () function formats the local date and time and returns the formatted date string.

Syntax:

Date (format,timestamp)

Returns the week ordinal of the year in ISO-8601 format when format is set to "W", starting on Monday (new to PHP 4.1.0).

Timestamp: the Unix timestamp of the specified integer, which can be omitted.

Example:

Output value:

four

Indicates the fourth week of the year

If the timestamp parameter is omitted, the week ordinal of the current time can be calculated

Output result:

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