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In this article, the editor introduces in detail "php how to convert a specified date into a week". The content is detailed, the steps are clear, and the details are handled properly. I hope this "php how to convert a specified date into a week" article can help you solve your doubts.

Conversion method: 1, use strtotime () to convert the specified date into a timestamp, the syntax "strtotime (" date ")"; 2, use date () with the formatting character "N" to convert the timestamp into a number representing the day of the week, and the syntax "date (" N ", timestamp)" will return 1 (Monday) to 7 (Sunday).

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

Php's method of converting a specified date to a week

In PHP, you can use the date () and strtotime () functions to do the conversion.

(in fact, date () is mainly used, but the object that this function handles is a timest therefore, we need to use the strtotime () function to convert the date to a timestamp before handing it to date (). )

1. Use the strtotime () function to convert the specified date into a timestamp

The strtotime () function can parse the date-time description described in English text into a UNIX timestamp.

2. Change the acquired timestamp to Sunday number

Date () can format the time and match the format character "N" to get the Sunday number.

N: returns the day of the week in ISO-8601 format (PHP 5.1.0 added), ranging from 1 (for Monday) to 7 (for Sunday)

Echo "$str1 is the week" .date ("N", $time1). "

"; echo" $str2 is the week ".date (" N ", $time2)

Check the calendar to see if it is correct.

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