php：自定义的格式化时间方法_PHP教程

如：时间刚好是5分钟前，则对应的时间戳就会被格式化为5分钟前，不多说了，直接贴上代码：

   /**
     * 格式化时间
     * @param integer $timestamp  时间戳
     * @param string $format  dt=日期时间 d=日期 t=时间 u=个性化 其他=自定义
     * @param integer $timeoffset  时区值
     * @param string $custom_format 自定义时间格式
     * @return string
     */
    public function dgmdate( $timestamp, $format = 'dt', $timeoffset = '9999', $custom_format = '' ) {
        $return = '';
        $now = time();
        $day_format = 'Y-n-j';
        $time_format = 'H:i:s';
        $date_format = $day_format . ' ' . $time_format;
        $offset = 8; //这里默认是东八区，也就是北京时间
        $lang = array(
            'before' => '前',
            'day' => '天',
            'yday' => '昨天',
            'byday' => '前天',
            'hour' => '小时',
            'half' => '半',
            'min' => '分钟',
            'sec' => '秒',
            'now' => '刚刚',
        );
        $timeoffset = $timeoffset == 9999 ? $offset : $timeoffset;
        $timestamp += $timeoffset * 3600;
        switch ( $format ) {
            case 'dt':
                $format = $date_format;
                break;
            case 'd':
                $format = $day_format;
                break;
            case 't':
                $format = $time_format;
                break;
        }
        if ( $format == 'u' ) {
            $todaytimestamp = $now - ($now + $timeoffset * 3600) % 86400 + $timeoffset * 3600;
            $s = gmdate( empty( $custom_format ) ? $date_format : $custom_format, $timestamp );
            $time = $now + $timeoffset * 3600 - $timestamp;
            if ( $timestamp >= $todaytimestamp ) {
                if ( $time > 3600 ) {
                    $return = '<span title="' . $s . "">' . intval( $time / 3600 ) . $lang['hour'] . $lang['before'] . '</span>';
                } elseif ( $time > 1800 ) {
                    $return = '<span title="' . $s . "">' . $lang['half'] . $lang['hour'] . $lang['before'] . '</span>';
                } elseif ( $time > 60 ) {
                    $return = '<span title="' . $s . "">' . intval( $time / 60 ) . $lang['min'] . $lang['before'] . '</span>';
                } elseif ( $time > 0 ) {
                    $return = '<span title="' . $s . "">' . $time . $lang['sec'] . $lang['before'] . '</span>';
                } elseif ( $time == 0 ) {
                    $return = '<span title="' . $s . "">' . $lang['now'] . '</span>';
                } else {
                    $return = $s;
                }
            } elseif ( ($days = intval( ($todaytimestamp - $timestamp) / 86400 )) >= 0 && $days < 7 ) {
                if ( $days == 0 ) {
                    $return = '<span title="' . $s . "">' . $lang['yday'] . gmdate( $time_format, $timestamp ) . '</span>';
                } elseif ( $days == 1 ) {
                    $return = '<span title="' . $s . "">' . $lang['byday'] . gmdate( $time_format, $timestamp ) . '</span>';
                } else {
                    $return = '<span title="' . $s . "">' . ($days + 1) . $lang['day'] . $lang['before'] . '</span>';
                }
            } else {
                $return = $s;
            }
        } else {
            $return = gmdate( $format, $timestamp );
        }
        return $return;
    }

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