How to get the day of the week the current time is using PHP

In modern society, Internet technology is becoming more and more developed, and there are more and more Web programming languages, among which PHP is the most commonly used one. PHP can do many things, such as generating dynamic web pages, processing form submission data, interacting with databases, etc. Today we will introduce how to use PHP to get the day of the week the current time is.

In PHP, getting the current time is very simple. We can use PHP's built-in function date() to get the current time, and obtain the day of the week through some formatting string operations.

The implementation code is as follows:

$weekarray = array("日","一","二","三","四","五","六"); //先定义一个数组，存储周几的汉字
echo "今天是星期" . $weekarray[date('w')];

We first define an array $weekarray, which stores Chinese characters from Sunday to Saturday. Next, we use the echo statement to splice "Today is the day of the week" with the day of the week of the current date (obtained using the w parameter in the date() function). By outputting them together, you can get the result of what day of the week the current time is.

It should be noted that the date() function returns the Unix timestamp of the current time, that is, from 0:00:00 on January 1, 1970 to the current date and time The number of seconds elapsed. Therefore, we can achieve more precise time calculation through some calculations in PHP.

For example, we can get the current timestamptime(), calculate the timestamp corresponding to each day of the week, and then obtain the corresponding date through the date() function day of the week for more accurate time calculation.

The code is as follows:

$weekday = array('周日', '周一', '周二', '周三', '周四', '周五', '周六');
$today = strtotime(date('Y-m-d')); // 获取当前时间戳（去掉时分秒）
for($i=0; $i<7; $i++) {
    $day = $today - ($i*86400); //86400为一天的秒数
    echo date(&#39;Y-m-d&#39;, $day) . &#39; &#39; . $weekday[date(&#39;w&#39;, $day)] . &#39;<br>';
}

The above code means to obtain the current date (removing hours, minutes and seconds), calculate the timestamp of each day of the week, and then output the day of the week of the corresponding date.

This article only briefly introduces some methods of using PHP to obtain the day of the week of the current date. Readers can perform more abundant operations and calculations according to their actual needs.

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