How to calculate day of week based on date in php

How to calculate the day of the week in php based on the date: You can use the date function to achieve this, such as [$weekarray[date("w",strtotime("2021-1-11"))];].

The operating environment of this article: windows10 system, php 7.3, thinkpad t480 computer.

The specific code is as follows:

date("l"); //data就可以获取英文的星期比如Sunday
date("w"); //这个可以获取数字星期比如123，注意0是星期日

Get the Chinese day of the week:

$weekarray=array("日","一","二","三","四","五","六"); //先定义一个数组
echo "星期".$weekarray[date("w")];

Get the specified date:

$weekarray=array("日","一","二","三","四","五","六");
echo "星期".$weekarray[date("w",strtotime("2021-1-11"))];

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