Shulou(Shulou.com)05/31 Report--

Today, the editor will share with you the relevant knowledge points about how php judges the first day of the year according to the year, month and day. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article. Let's take a look at it.

Judgment methods: 1, use "strtotime" statement to convert a given year, month and day into a timestamp format; 2, use "date (" z ", timestamp) + 1" statement to calculate the day of a year with a specified timestamp. The number of days returned by date () is calculated from 0, so the real number of days needs to be added by 1.

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

According to the year, month and day, php judges the day of the year.

In php, you can use the date () function to determine which day of the year a specified date is.

But the date () function handles timestamps, so you need to first use the strtotime () function to convert the year, month and day to the timestamp format.

The calculation syntax for the date () function:

Date ("z", timestamp)

The date () function is formatted with the character "z", and the date of the year can be calculated. Range of return values: from 0 to 365

Because the number of days returned is calculated from 0, the real number of days needs to be added by 1.

Implementation code:

These are all the contents of the article "how to judge the day of the year by php". Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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.