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  • php计算两个日期相差的天数


    /**
    * 时间差计算
    *
    * @param Timestamp $time
    * @return String Time Elapsed
    */
    function time2Units ($time,$sign)
    {
    $year = floor($time / 60 / 60 / 24 / 365);
    $time -= $year * 60 * 60 * 24 * 365;
    $month = floor($time / 60 / 60 / 24 / 30);
    $time -= $month * 60 * 60 * 24 * 30;
    $week = floor($time / 60 / 60 / 24 / 7);
    $time -= $week * 60 * 60 * 24 * 7;
    $day = floor($time / 60 / 60 / 24);
    $time -= $day * 60 * 60 * 24;
    $hour = floor($time / 60 / 60);
    $time -= $hour * 60 * 60;
    $minute = floor($time / 60);
    $time -= $minute * 60;
    $second = $time;
    $elapse = '';

    $unitArr = array(
    '年' =>'year',
    '个月'=>'month',
    '周'=>'week',
    '天'=>'day',
    '小时'=>'hour',
    '分钟'=>'minute',
    '秒'=>'second'
    );

    foreach ( $unitArr as $cn => $u )
    {

    if ( $$u > 0 )
    {
    if($sign == 'day'){
    $elapse = $$u . $cn;
    break;
    }else{
    //上两行只取最大时间(有分钟就舍去秒,有小时就舍去分秒,以此类推)
    $elapse .= $$u . $cn;
    }
    }
    }

    return $elapse;
    }

     其中的$$u表示将$u作为名称,重新声明变量

    假如$u的值为year,则$$u相当于$year,即输出$year的值

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  • 原文地址:https://www.cnblogs.com/tine/p/7463212.html
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