<?php

class DateFormat
{
    private static $_DIFF_FORMAT = array(
        'DAY'           => '%s天前',
        'DAY_HOUR'      => '%s天%s小時(shí)前',
        'HOUR'          => '%s小時(shí)',
        'HOUR_MINUTE'   => '%s小時(shí)%s分前',
        'MINUTE'        => '%s分鐘前',
        'MINUTE_SECOND' => '%s分鐘%s秒前',
        'SECOND'        => '%s秒前',
    );

    /**
     * 友好格式化時(shí)間
     * 
     * @param int 時(shí)間
     * @param array $formats
     * @return string
     */
    public static function diff($timestamp, $formats = null) 
    {
        if ($formats == null) {
            $formats = self::$_DIFF_FORMAT;
        }
        /* 計(jì)算出時(shí)間差 */
        $seconds = time() - $timestamp;
        $minutes = floor($seconds / 60);
        $hours   = floor($minutes / 60);
        $days    = floor($hours / 24);

        if ($days > 0) {
            $diffFormat = 'DAY';
        } else {
            $diffFormat = ($hours > 0) ? 'HOUR' : 'MINUTE';
            if ($diffFormat == 'HOUR') {
                $diffFormat .= ($minutes > 0 && ($minutes - $hours * 60) > 0) ? '_MINUTE' : '';
            } else {
                $diffFormat = (($seconds - $minutes * 60) > 0 && $minutes > 0) 
                                ? $diffFormat.'_SECOND' : 'SECOND';
            }
        }

        $dateDiff = null;
        switch ($diffFormat) {
            case 'DAY':
                $dateDiff = sprintf($formats[$diffFormat], $days);
                break;
            case 'DAY_HOUR':
                $dateDiff = sprintf($formats[$diffFormat], $days, $hours - $days * 60);
                break;
            case 'HOUR':
                $dateDiff = sprintf($formats[$diffFormat], $hours);
                break;
            case 'HOUR_MINUTE':
                $dateDiff = sprintf($formats[$diffFormat], $hours, $minutes - $hours * 60);
                break;
            case 'MINUTE':
                $dateDiff = sprintf($formats[$diffFormat], $minutes);
                break;
            case 'MINUTE_SECOND':
                $dateDiff = sprintf($formats[$diffFormat], $minutes, $seconds - $minutes * 60);
                break;
            case 'SECOND':
                $dateDiff = sprintf($formats[$diffFormat], $seconds);
                break;
        }
        return $dateDiff;
    }
}

echo DateFormat::diff('1310455823');
/* 33分鐘47秒前  */

標(biāo)簽： [db:TAGG]

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