php calender(日历)二个版本代码示例(解决2038问题)-一佰互联

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php calender(日历)二个版本代码示例(解决2038问题)

author：一佰互联 2019-04-29 click：184

注意32位机有2038问题，所以32位服务器的年限范围1970年~2038年

我们还可以使用DateTime来规避这个问题(这样与32位64位无关了)

复制代码代码如下:
<?php
/**
*
* 我的日历
* date_default_timezone_set date mktime
* @param int $year
* @param int $month
* @param string $timezone
* @author fc_lamp
* @blog: fc-lamp.blog.163.com
*/
function myCalender($year = "", $month = "", $timezone = "Asia/Shanghai")
{ date_default_timezone_set ( $timezone );
$year = abs ( intval ( $year ) );
$month = abs ( intval ( $month ) ); //是否是32位机
if (is32())
{
  if ($year < 1970 or $year >= 2038)
  {
   $year = date ( "Y" );
  }
} else
{
  if ($year <= 0)
  {
   $year = date ( "Y" );
  } } if ($month <= 0 or $month > 12)
{
  $month = date ( "m" );
} //上一年
$pretYear = $year - 1;
//上一月
$mpYear = $year;
$preMonth = $month - 1;
if ($preMonth <= 0)
{
  $preMonth = 1;
  $mpYear = $pretYear;
} //下一年
$nextYear = $year + 1;
//下一月
$mnYear = $year;
$nextMonth = $month + 1;
if ($nextMonth > 12)
{
  $nextMonth = 1;
  $mnYear = $nextYear;
} //日历头
$html = <<<HTML
<table width="500" border="1">
<tr align="center">
    <td><a href="?y=$pretYear">上一年</a></td>
    <td><a href="?y=$mpYear&m=$preMonth">上一月</a></td>
     <td><a href="?">回到今天</a></td>
    <td><a href="?y=$mnYear&m=$nextMonth">下一月</a></td>
<td><a href="?y=$nextYear">下一年</a></td>
</tr>
<tr align="center">
    <td colspan="5">{$year}年{$month}月</td>
</tr>
<tr>
<td colspan="5">
  <table width="100%" border="1">
   <tr align="center">
    <td style="background-color:#DAF0DD;">星期一</td>
    <td style="background-color:#DAF0DD;">星期二</td>
    <td style="background-color:#DAF0DD;">星期三</td>
    <td style="background-color:#DAF0DD;">星期四</td>
    <td style="background-color:#DAF0DD;">星期五</td>
    <td style="background-color:#F60;color:#fff;font-weight: bold;">星期六</td>
    <td style="background-color:#F60;color:#fff;font-weight: bold;">星期天</td>
   </tr>
HTML; $currentDay = date ( "Y-m-j" ); //当月最后一天
$lastday = date ( "j", mktime ( 0, 0, 0, $nextMonth, 0, $year ) ); //循环输出天数
$day = 1;
$line = "";
while ( $day <= $lastday )
{
  $cday = $year . "-" . $month . "-" . $day;  //当前星期几
  $nowWeek = date ( "N", mktime ( 0, 0, 0, $month, $day, $year ) );  if ($day == 1)
  {
   $line = "<tr align="center">";
   $line .= str_repeat ( "<td> </td>", $nowWeek - 1 );
  }  if ($cday == $currentDay)
  {
   $style = "style="color:red;"";
  } else
  {
   $style = "";
  }  $line .= "<td $style>$day</td>";  //一周结束
  if ($nowWeek == 7)
  {
   $line .= "</tr>";
   $html .= $line;
   $line = "<tr align="center">";
  }  //全月结束
  if ($day == $lastday)
  {
   if ($nowWeek != 7)
   {
    $line .= str_repeat ( "<td> </td>", 7 - $nowWeek );
   }
   $line .= "</tr>";
   $html .= $line;   break;
  }  $day ++;
} $html .= <<<HTML
  </table>
</td>
</tr>
</table>
HTML;
return $html;
}

/**
*
* 检测是否是32位机
* @author fc_lamp
* @blog: fc-lamp.blog.163.com
*/
function is32()
{
$is32 = False;
if (strtotime ( "2039-10-10" ) === False)
{
$is32 = True;
}
return $is32;
}

使用DateTime 类解决2038问题，这样不分32位与64位，代码如下：

复制代码代码如下:
<?php
/**
*
* 我的日历(DateTime版本)
* date_default_timezone_set date mktime
* @param int $year
* @param int $month
* @param string $timezone
* @author fc_lamp
* @blog: fc-lamp.blog.163.com
*/
function myCalender($year = "", $month = "", $timezone = "Asia/Shanghai")
{ date_default_timezone_set ( $timezone );
$year = abs ( intval ( $year ) );
$month = abs ( intval ( $month ) ); $nowDate = new DateTime(); if ($year <= 0)
{
  $year = $nowDate->format( "Y" );
} if ($month <= 0 or $month > 12)
{
  $month = $nowDate->format("m" );
} //上一年
$pretYear = $year - 1;
//上一月
$mpYear = $year;
$preMonth = $month - 1;
if ($preMonth <= 0)
{
  $preMonth = 1;
  $mpYear = $pretYear;
} //下一年
$nextYear = $year + 1;
//下一月
$mnYear = $year;
$nextMonth = $month + 1;
if ($nextMonth > 12)
{
  $nextMonth = 1;
  $mnYear = $nextYear;
} //日历头
$html = <<<HTML
<table width="500" border="1">
<tr align="center">
    <td><a href="?y=$pretYear">上一年</a></td>
    <td><a href="?y=$mpYear&m=$preMonth">上一月</a></td>
     <td><a href="?">回到今天</a></td>
    <td><a href="?y=$mnYear&m=$nextMonth">下一月</a></td>
<td><a href="?y=$nextYear">下一年</a></td>
</tr>
<tr align="center">
    <td colspan="5">{$year}年{$month}月</td>
</tr>
<tr>
<td colspan="5">
  <table width="100%" border="1">
   <tr align="center">
    <td style="background-color:#DAF0DD;">星期一</td>
    <td style="background-color:#DAF0DD;">星期二</td>
    <td style="background-color:#DAF0DD;">星期三</td>
    <td style="background-color:#DAF0DD;">星期四</td>
    <td style="background-color:#DAF0DD;">星期五</td>
    <td style="background-color:#F60;color:#fff;font-weight: bold;">星期六</td>
    <td style="background-color:#F60;color:#fff;font-weight: bold;">星期天</td>
   </tr>
HTML; $currentDay = $nowDate->format("Y-m-j" ); //当月最后一天
$creatDate = new DateTime("$year-$nextMonth-0");
$lastday = $creatDate->format("j");
$creatDate = NULL; //循环输出天数
$day = 1;
$line = "";
while ( $day <= $lastday )
{
  $cday = $year . "-" . $month . "-" . $day;  //当前星期几
  $creatDate = new DateTime("$year-$month-$day");
  $nowWeek = $creatDate->format("N");
  $creatDate = NULL;  if ($day == 1)
  {
   $line = "<tr align="center">";
   $line .= str_repeat ( "<td> </td>", $nowWeek - 1 );
  }  if ($cday == $currentDay)
  {
   $style = "style="color:red;"";
  } else
  {
   $style = "";
  }  $line .= "<td $style>$day</td>";  //一周结束
  if ($nowWeek == 7)
  {
   $line .= "</tr>";
   $html .= $line;
   $line = "<tr align="center">";
  }  //全月结束
  if ($day == $lastday)
  {
   if ($nowWeek != 7)
   {
    $line .= str_repeat ( "<td> </td>", 7 - $nowWeek );
   }
   $line .= "</tr>";
   $html .= $line;   break;
  }  $day ++;
} $html .= <<<HTML
  </table>
</td>
</tr>
</table>
HTML;
return $html;
}

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