``` /** * 格式化时间 * @param [type] $time [要格式化的时间戳] * @return [type] [description] */ function time_format ($time) { //当前时间 $now = time(); //今天零时零分零秒 $today = strtotime(date('y-m-d', $now)); //传递时间与当前时秒相差的秒数 $diff = $now - $time; $str = ''; switch ($time) { case $diff < 60 : $str = $diff . '秒前'; break; case $diff < 3600 : $str = floor($diff / 60) . '分钟前'; break; case $diff < (3600 * 8) : $str = floor($diff / 3600) . '小时前'; break; case $time > $today : $str = '今天&nbsp;&nbsp;' . date('H:i', $time); break; default : $str = date('Y-m-d H:i:s', $time); } return $str; } ```