PHP实现时间格式转换，获取友好的时间显示

PHP实现时间格式转换，获取友好的时间显示

 

1.函数gmstrftime();

<?php

/**
 * 时间友好显示
 * @param int $time 时间戳
 * @return string   友好时间字符串
 * @author  zhouzy
 */
function get_friendly_time($time) {
    //time=时间戳,timeCurr=当前时间,timeDiff=时间差,dayDiff=天数差,yearDiff=年数差
    if (!$time) {
        return '';
    }
    $timeCurr = time();
    $timeDiff = $timeCurr - $time;
    $dayDiff = intval(date("z", $timeCurr)) - intval(date("z", $time));
    $yearDiff = intval(date("Y", $timeCurr)) - intval(date("Y", $time));
    if ($timeDiff < 60) {
        if ($timeDiff < 10) {
            return '刚刚';
        } else {
            return floor($timeDiff) . "秒前";
        }
    } elseif ($timeDiff < 3600) {  //1小时内
        return floor($timeDiff / 60) . "分钟前";
    } elseif ($yearDiff == 0 && $dayDiff == 0) {   //今天内
        return '今天 ' . date('H:i', $time);
    } elseif ($yearDiff == 0) {    //今年内
        return date("m月d日 H:i", $time);
    } else {  //正常显示
        return date("Y-m-d H:i", $time);
    }
}




/**
 * 时间对比
 * @param $time int    对比的时间（时间戳）
 * @param $nowTime int 目前时间（时间戳）
 * @return string
 */
function time_ago($time = 0, $nowTime = 0) {
    if (!$nowTime) $nowTime = time();
    $dif = $nowTime - $time;
    if ($dif < 1)
        return '刚刚';
    if ($dif < 60)
        return $dif . '秒前';
    $dif = $dif / 60;
    if (1 <= $dif && $dif < 60)
        return (int)$dif . '分钟前';
    $dif = $dif / 60;
    if (1 <= $dif && $dif < 24)
        return (int)$dif . '小时前';
    //最多显示3天前
    $dif = $dif / 24;
    if (1 <= $dif && $dif <= 3)
        return (int)$dif . '天前';
    return date('m-d', $time);
}





/**
 * 友好的时间显示
 */
function time_to_units($time) {
    $now_time = time();
    $time_diff = $now_time - $time;

    $units = array(
        '31536000' => '年前',
        '2592000'  => '月前',
        '86400'    => '天前',
        '3600'     => '小时前',
        '60'       => '分钟前',
        '1'        => '秒前',
    );
    foreach ($units as $key => $value) {
        if ($time_diff > $key) {
            $num = (int)($time_diff / $key);
            $tips = $num . $value;
            break;
        }
    }
    return $tips;
}



/**
 * 计算持续时长
 * （秒转换为天，小时，分钟）
 * @param int $second 秒数
 * @return string $duration 5天10小时43分钟40秒
 */
function secondTime($seconds=0){
    $duration = '';

    $seconds  = (int) $seconds;
    if ($seconds <= 0) {
        return $duration.'0秒';
    }

    list($day, $hour, $minute, $second) = explode(' ', gmstrftime('%j %H %M %S', $seconds));

    $day -= 1;
    if ($day > 0) {
        $duration .= (int) $day.'天';
    }
    if ($hour > 0) {
        $duration .= (int) $hour.'小时';
    }
    if ($minute > 0) {
        $duration .= (int) $minute.'分钟';
    }
    if ($second > 0) {
        $duration .= (int) $second.'秒';
    }

    return $duration;
}