How to use date function in php to get the day of the week

php uses the date function to get the day of the week: [date("w");] or [date("l");]. We can also determine the day of the week the specified date is, such as [date("w",strtotime("2020-11-11"))].

Specific code:

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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 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("2020-11-11"))];

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