PHP calender (calendar) two version code examples (solve the 2038 problem)

PHP calender (calendar) two version code examples (solve the 2038 problem)_PHP tutorial

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Release： 2016-07-13 17:18:28

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PHP calender (calendar) two version code examples (solve the 2038 problem)_PHP tutorial

Note that 32-bit machines have a 2038 problem, so the age range of 32-bit servers is 1970~2038

We can also use DateTime to avoid this problem (this has nothing to do with 32-bit and 64-bit)

Copy code The code is as follows:

/**
*
* 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 = <<

{$year}年{$month}月

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 = '';
   $line .= str_repeat ( '', $nowWeek - 1 );
  }

  if ($cday == $currentDay)
  {
   $style = 'style="color:red;"';
  } else
  {
   $style = '';
  }

  $line .= "";

  //一周结束
  if ($nowWeek == 7)
  {
   $line .= '';
   $html .= $line;
   $line = '';
  }

//End of the month
if ($day == $lastday)
{
if ($nowWeek != 7)
{
$line .= str_repeat ( '', 7 - $nowWeek );
}
$line .= '';
$html .= $line;

break;
}

$day ++;
}

$html .= <<

星期一	星期二	星期三	星期四	星期五	星期六	星期天
	$day

HTML;
return $html;
}

/**
*
* Check if it is a 32-bit machine
* @author fc_lamp
* @blog: fc-lamp.blog.163.com
*/
function is32()
{
$is32 = False;
if (strtotime ( '2039-10-10' ) === False)
{
$is32 = True;
}
return $is32;
}

Use the DateTime class to solve the 2038 problem, so that there is no distinction between 32-bit and 64-bit. The code is as follows:

Copy code The code is as follows:

/**
*
* My calendar (DateTime version)
* 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 = <<

{$year}年{$month}月

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 = '';
   $line .= str_repeat ( '', $nowWeek - 1 );
  }

  if ($cday == $currentDay)
  {
   $style = 'style="color:red;"';
  } else
  {
   $style = '';
  }

  $line .= "";

  //一周结束
  if ($nowWeek == 7)
  {
   $line .= '';
   $html .= $line;
   $line = '';
  }

//End of the month
if ($day == $lastday)
{
if ($nowWeek != 7)
{
$line .= str_repeat ( '', 7 - $nowWeek );
}
$line .= '';
$html .= $line;

break;
}

$day ++;
}

$html .= <<

星期一	星期二	星期三	星期四	星期五	星期六	星期天
	$day

HTML;
return $html;
}