How to determine the day of the week in php

The way PHP determines the day of the week is: you can use the date() function to determine. The date() function can format the timestamp into a more readable date and time. The specific usage is as follows: [date("w");], where w represents the day of the week, 0 represents Sunday, and 6 represents Saturday.

The PHP date() function formats a timestamp into a more readable date and time.

(Recommended tutorial: php tutorial)

Function syntax:

string date ( string $format [, int $timestamp ] )

Parameter description:

• format Required. Specifies the format of the timestamp. w represents the day of the week, 0 (representing Sunday) to 6 (representing Saturday).

• timestamp Optional. Specify timestamp. The default is the current date and time.

Code implementation:

$ga = date("w"); 
switch( $ga ){ 
case 1 : echo "今天是星期一";break; 
case 2 : echo "今天是星期二";break; 
case 3 : echo "今天是星期三";break; 
case 4 : echo "今天是星期四";break; 
case 5 : echo "今天是星期五";break; 
case 6 : echo "今天是星期六";break; 
case 0 : echo "今天是星期日";break; 
default : echo "你输入有误！"; 
};

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