PHP把秒转换成天数，小时数和分钟格式时间

一. PHP把秒转换成天数，小时数和分钟格式时间简单写法

function secsToStr($secs) {
    if($secs>=86400){$days=floor($secs/86400);$secs=$secs%86400;$r=$days.' day';if($days<>1){$r.='s';}if($secs>0){$r.=', ';}}
    if($secs>=3600){$hours=floor($secs/3600);$secs=$secs%3600;$r.=$hours.' hour';if($hours<>1){$r.='s';}if($secs>0){$r.=', ';}}
    if($secs>=60){$minutes=floor($secs/60);$secs=$secs%60;$r.=$minutes.' minute';if($minutes<>1){$r.='s';}if($secs>0){$r.=', ';}}
    $r.=$secs.' second';if($secs<>1){$r.='s';}
    return $r;
}

二. PHP把小于多少秒转换成天数，小时数和分钟格式时间完整写法

/**
 * 时间友好型提示风格化（即微博中的XXX小时前、昨天等等）
 *
 * 即微博中的 XXX 小时前、昨天等等, 时间超过 $time_limit 后返回按 out_format 的设定风格化时间戳
 *
 * @param  int
 * @param  int
 * @param  string
 * @param  array
 * @param  int
 * @return string
 */
function date_friendly($timestamp, $time_limit = 604800, $out_format = 'Y-m-d H:i', $formats = null, $time_now = null)
{
    if (get_setting('time_style') == 'N')
    {
        return date($out_format, $timestamp);
    }
    if (!$timestamp)
    {
        return false;
    }
    if ($formats == null)
    {
        $formats = array('YEAR' => AWS_APP::lang()->_t('%s 年前'), 'MONTH' => AWS_APP::lang()->_t('%s 月前'), 'DAY' => AWS_APP::lang()->_t('%s 天前'), 'HOUR' => AWS_APP::lang()->_t('%s 小时前'), 'MINUTE' => AWS_APP::lang()->_t('%s 分钟前'), 'SECOND' => AWS_APP::lang()->_t('%s 秒前'));
    }
    $time_now = $time_now == null ? time() : $time_now;
    $seconds = $time_now - $timestamp;
    if ($seconds == 0)
    {
        $seconds = 1;
    }
    if (!$time_limit OR $seconds > $time_limit)
    {
        return date($out_format, $timestamp);
    }
    $minutes = floor($seconds / 60);
    $hours = floor($minutes / 60);
    $days = floor($hours / 24);
    $months = floor($days / 30);
    $years = floor($months / 12);
    if ($years > 0)
    {
        $diffFormat = 'YEAR';
    }
    else
    {
        if ($months > 0)
        {
            $diffFormat = 'MONTH';
        }
        else
        {
            if ($days > 0)
            {
                $diffFormat = 'DAY';
            }
            else
            {
                if ($hours > 0)
                {
                    $diffFormat = 'HOUR';
                }
                else
                {
                    $diffFormat = ($minutes > 0) ? 'MINUTE' : 'SECOND';
                }
            }
        }
    }
    $dateDiff = null;
    switch ($diffFormat)
    {
        case 'YEAR' :
            $dateDiff = sprintf($formats[$diffFormat], $years);
            break;
        case 'MONTH' :
            $dateDiff = sprintf($formats[$diffFormat], $months);
            break;
        case 'DAY' :
            $dateDiff = sprintf($formats[$diffFormat], $days);
            break;
        case 'HOUR' :
            $dateDiff = sprintf($formats[$diffFormat], $hours);
            break;
        case 'MINUTE' :
            $dateDiff = sprintf($formats[$diffFormat], $minutes);
            break;
        case 'SECOND' :
            $dateDiff = sprintf($formats[$diffFormat], $seconds);
            break;
    }
    return $dateDiff;
}

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