PHP gets summary of various times (code)-PHP Tutorial-php.cn

PHP gets summary of various times (code)

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Release： 2023-04-03 21:16:01

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The content of this article is a summary (code) of various times obtained by PHP. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Get the system time

For example: the day before the system, the previous day, the current Monday time of the previous week, etc.

1. Get the current system time

echo "date(&#39;Y-m-d&#39;,time())";

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2. Get the system time of the previous day

echo "date("Y-m-d",strtotime("-1 day"))";
需要前几天就减去(-) 需要几天后就加(+)

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3. Get the Monday and Sunday dates of the previous week in the current system time

//上周周日的日期
$lastSunday = date(&#39;Y-m-d&#39;, strtotime(&#39;-1 sunday&#39;, time()));
//根据时间差 减去6天前，算出上周周一日期
$lastMonday = date(&#39;Y-m-d&#39;,strtotime(&#39;$lastSunday -6 day&#39;,$ss));

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4. Get the day of the current week. Sunday is 0, Monday to Saturday is 1 - 6

    $today = date(&#39;Y-m-d&#39;,time());
    //获取当前周的第几天 周日是 0 周一到周六是 1 - 6  
    $w=date(&#39;w&#39;,strtotime($today));  
    $first=1;
    //获取本周开始日期，如果$w是0，则表示周日，减去 6 天     
    $weekStart=date(&#39;Y-m-d 00:00:00&#39;,strtotime("$today-".($w ? $w - $first : 6).&#39; days&#39;));            
    //本周结束日期  
    $weekEnd=date(&#39;Y-m-d 23:59:59&#39;,strtotime("$weekStart +6 days"));
    //前一周的起始时间
    $weekStart = date(&#39;Y-m-d 00:00:00&#39;,strtotime("$weekStart -7 days"));
    $weekEnd = date(&#39;Y-m-d 23:59:59&#39;,strtotime("$weekEnd -7 days")););

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5. How many days were there in the previous month

$t = date(&#39;t&#39;,strtotime(&#39;-1 month&#39;));

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