PHP常用函数之格式化时间操作示例

/** * 格式化时间 * @param $time 时间戳 * @return bool|string */function formatTimeToNow($time){  //获取现在的时间戳  $nowtime = time();  if($time>$nowtime){    return '';  }else{    $tc = $nowtime-$time;    if( $tc >= 864000 ){      $str = date('Y-m-d H:i',$time);//如果大于10天,则直接显示日期    }else if( $tc >= 86400){      $str = floor($tc/86400) . "天前";//如果大于1天    }else if( $tc >= 3600) {      $str = floor($tc / 3600) . "小时前";//如果大于1小时    }else if( $tc >= 60) {      $str = floor($tc / 60) . "分钟前";//如果大于1分钟    }else{      $str = "刚刚";    }    return $str;  }}

/** * 将中文的日期格式化为正常的日期 * @param $date * @return mixed */function formatCnDateToDate($date){  //把年月替换为-，日替换为空  $date = str_replace('年','-',$date);  $date = str_replace('月','-',$date);  $date = str_replace('日','',$date);  //避免提交的格式不统一，例如2018-3-2等，标准化  return date('Y-m-d',strtotime($date));}

/** * 计算自然周期的开始时间戳和结束时间戳（周一到周日，月初到月末） * @param int $time_type 1表示自然天，2表示自然周，3表示自然月 * @param int $prev_num 距离现在的值（前一周传-1，前两周传-2...） * @return array|bool */function naturalFormatTime($time_type=1,$prev_num=0){  $today_start_time = strtotime(date('Y-m-d 00:00:00',time()));//今天0点的时间戳  if($time_type == 1){    if($prev_num == 0){      return array('start_time'=>$today_start_time,'end_time'=>time(),'show_date'=>date('Y年m月d日',time()));    }else if($prev_num < 0){      $start_time = $today_start_time - 86400*abs($prev_num);      $end_time = $start_time + 86399;      $show_date = date('Y年m月d日',$start_time);      return array('start_time'=>$start_time,'end_time'=>$end_time,'show_date'=>$show_date);    }else{      return false;    }  }else if($time_type == 2){    $today_week = date('w',$today_start_time);    if($today_week == 0){      $today_week_start_time = $today_start_time - 86400*6;    }else{      $today_week_start_time = $today_start_time - 86400*($today_week-1);    }    if($prev_num == 0){      $show_date = date('Y年m月d日',$today_week_start_time);      $show_date .= '至' . date('d日',time());      return array('start_time'=>$today_week_start_time,'end_time'=>time(),'show_date'=>$show_date);    }else if($prev_num < 0){      $start_time = $today_week_start_time - 86400*7 * abs($prev_num);      $end_time = $start_time + (86400*7-1);      $show_date = date('Y年m月d日',$start_time);      $show_date .= '至' . date('d日',$end_time);      return array('start_time'=>$start_time,'end_time'=>$end_time,'show_date'=>$show_date);    }else{      return false;    }  }else if($time_type == 3){    if($prev_num == 0){      $today_day = ltrim(date('d',$today_start_time),0);      $today_month_start_time = $today_start_time - 86400*($today_day-1);      $show_date = date('Y年m月d日',$today_month_start_time);      $show_date .= '至' . date('d日',time());      return array('start_time'=>$today_month_start_time,'end_time'=>time(),'show_date'=>$show_date);    }else if($prev_num < 0){      $start_time = strtotime(date('Y-m-01', strtotime("$prev_num month")));      $days = date('t',$start_time);      $end_time = $start_time + 86400 * $days -1;      $show_date = date('Y年m月d日',$start_time);      $show_date .= '至' . date('d日',$end_time);      return array('start_time'=>$start_time,'end_time'=>$end_time,'show_date'=>$show_date);    }else{      return false;    }  }else{    return false;  }}

/** * 计算近一周或近一个月的开始时间戳和结束时间戳 * @param $type 1表示今天，2表示近一周，3表示近一个月 * @return array */function nearFormatTime($type){  $start_time = strtotime(date('Y-m-d 00:00:00'));//今天0点的时间戳  $end_time = $start_time + 86399;//今天23:59的时间戳  $res = array('start_time'=>0,'end_time'=>$end_time);  if($type == 1){    //今天    $res['start_time'] = $start_time;  }else if($type == 2){    //近一周    $res['start_time'] = $start_time - 86400*6;//包括今天,共七天  }else if($type == 3){    //近一个月    $res['start_time'] = $start_time - 86400*30;//包括今天,共31天  }  return $res;}