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php实现的DateDiff和DateAdd时间函数代码介绍

发布时间:2022-07-22 11:30:03 所属栏目:PHP教程 来源:互联网
导读:这篇文章主要介绍了php实现的DateDiff和DateAdd时间函数代码分享,DateDiff用来计算两个时间的间隔,DateAdd用来对两个时间进行相加,需要的朋友可以参考下 扩展php中的时间函数DateDiff和DateAdd function DateDiff($part, $begin, $end) { $diff = strtotime(
  这篇文章主要介绍了php实现的DateDiff和DateAdd时间函数代码分享,DateDiff用来计算两个时间的间隔,DateAdd用来对两个时间进行相加,需要的朋友可以参考下
 
  扩展php中的时间函数DateDiff和DateAdd
 
  function DateDiff($part, $begin, $end)
  {
  $diff = strtotime($end) - strtotime($begin);
  switch($part)
  {
  case "y": $retval = bcdiv($diff, (60 * 60 * 24 * 365)); break;
  case "m": $retval = bcdiv($diff, (60 * 60 * 24 * 30)); break;
  case "w": $retval = bcdiv($diff, (60 * 60 * 24 * 7)); break;
  case "d": $retval = bcdiv($diff, (60 * 60 * 24)); break;
  case "h": $retval = bcdiv($diff, (60 * 60)); break;
  case "n": $retval = bcdiv($diff, 60); break;
  case "s": $retval = $diff; break;
  }
  return $retval;
  }
   
  function DateAdd($part, $number, $date)
  {
  $date_array = getdate(strtotime($date));
  $hor = $date_array["hours"];
  $min = $date_array["minutes"];
  $sec = $date_array["seconds"];
  $mon = $date_array["mon"];
  $day = $date_array["mday"];
  $yar = $date_array["year"];
  switch($part)
  {
  case "y": $yar += $number; break;
  case "q": $mon += ($number * 3); break;
  case "m": $mon += $number; break;
  case "w": $day += ($number * 7); break;
  case "d": $day += $number; break;
  case "h": $hor += $number; break;
  case "n": $min += $number; break;
  case "s": $sec += $number; break;
  }
  return date("Y-m-d H:i:s", mktime($hor, $min, $sec, $mon, $day, $yar));
  }
   
  Function DateAdd($part, $n, $date)
  {
  switch($part)
  {
  case "y": $val = date("Y-m-d H:i:s", strtotime($date ." +$n year")); break;
  case "m": $val = date("Y-m-d H:i:s", strtotime($date ." +$n month")); break;
  case "w": $val = date("Y-m-d H:i:s", strtotime($date ." +$n week")); break;
  case "d": $val = date("Y-m-d H:i:s", strtotime($date ." +$n day")); break;
  case "h": $val = date("Y-m-d H:i:s", strtotime($date ." +$n hour")); break;
  case "n": $val = date("Y-m-d H:i:s", strtotime($date ." +$n minute")); break;
  case "s": $val = date("Y-m-d H:i:s", strtotime($date ." +$n second")); break;
  }
  return $val;
  } 

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