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PHP Calender (Calendar) Two version code examples

Source: Internet
Author: User
Tags abs datetime
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A simple PHP calender (calendar) solves 2038 problems, so it can be used on both 32-bit and 64-bit machines, the code is simple and easy to modify

  Note 32-bit machine has 2038 problems, so 32-bit server life span 1970 ~2038 years   We can also use DateTime to circumvent this problem (this is not related to 32-bit 64-bit)   code as follows: <?php/** & nbsp;*   * My calendar  * 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));    //is a 32-bit machine  if (IS32 ())  {  if ($year < 1970 or $year >= 2038)   {    $ye AR = Date (' Y ');  } &nbsp Else  {  if ($year <= 0)   {    $year = date (' Y ');  }     }    if ($month <= 0 or $month >)  {  $month = date (' m ');      //previous year &nbs p; $pretYear = $year-1;  //month   $mpYear = $year; &nbsp. $preMonth = $month-1;  if ($preMonth <= 0)  {  $preMonth = 1   $mpYear = $pretYear;      //next year   $n Extyear = $year + 1;  //next month   $mnYear = $year;   $nextMonth = $month + 1;  if ($nextMonth >)  {  $nextMonth = 1   $mnYear = $nextYear; &nbsp}    //Calendar header   $html = <<<html <table width= "$" border= "1" >   <tr align= "center" >     <TD>&L T;a href= "? y= $pretYear" > Last year </a></td>     <td><a href= "? y= $mpYear &m= $preMonth" > Last month </a></td>      <td><a href= "?" > Back to today </a></td>     <td><a href= "? y= $mnYear &m= $nextMonth" > next month </a> </td>  <td><a href= "? y= $nextYear" > next year </a></td>   </tr>   <TR align= "center" >     <TD colspan= "5" >{$year} year {$month} month </td>   </tr> &NBsp <tr>    <TD colspan= "5" >   <table width= "100%" border= "1" >    <TR align= " Center ">     <TD style=" Background-color: #DAF0DD; " > Monday </td>     <TD style= "Background-color: #DAF0DD;" > Tuesday </td>     <TD style= "Background-color: #DAF0DD;" > Wednesday </td>     <TD style= "Background-color: #DAF0DD;" > Thursday </td>     <TD style= "Background-color: #DAF0DD;" > Friday </td>     <TD style= "background-color: #F60; color: #fff; font-weight:bold;" > Saturday </td>     <TD style= "background-color: #F60; color: #fff; font-weight:bold;" > Sunday </td>    </tr> HTML;     $currentDay = date (' Y-m-j ');    //The last day of the month   $lastday = date (' J ', Mktime (0, 0, 0, $nextMonth, 0, $year));    //cycle output days   $day = 1;   $line = ';  while ($day <= $lastday)  {  $cday = $year. '-' . $Month. '-' . $day;    //current day of the week   $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 > $day </td>";    //week end   if ($nowWeek = = 7)   {    $line. = ' </tr> ';     $html. = $line;     $line = ' <tr align= ' center ' > ';  }    //All month end   if ($day = = $lastday)   {   if ($nowWeek!= 7)    {    $line. = Str_repeat (' <td> </td> ', 7-$nowWeek);   &nbsp     $line. = ' </tr> ';     $html. = $line;      break;  }     $day++; &NBSP}     $html. = <<<html   </table>   </td>   </tr> </ Table> HTML;  return $html; }  /**  *   * detection is a 32-bit machine  * @author fc_lamp  * @blog: fc-lamp.blog.163.com  */function Is32 () {  $is = false;  if (Strtotime (' 2039-10-10 ') = False)  {  $is = True;  }   return $is 32;       Use the DateTime class to resolve 2038 issues, so that no 32 digits and 64 bits, the code is as follows:     code is as follows: <?php/**  *   * My Calendar (D Atetime 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 = ', $mo Nth = ', $timezone = ' Asia/shanghai ') {   date_default_timezone_set ($timezone);   $year = ABS (intval ($year));   $month = ABS (Intval ($month));     $nowDate = new DateTime (); &nBsp  if ($year <= 0)  {  $year = $nowDate->format (' Y ');  }    if ($month <= 0 or $mo Nth >)  {  $month = $nowDate->format (' m ');  }    //previous year   $pretYear = $year-1;  //month   $mpYear = $year;   $preMonth = $month-1;  if ($preMonth <= 0)  {  $preMonth = 1   $mpYear = $pretYear;      //next year   $n Extyear = $year + 1;  //next month   $mnYear = $year;   $nextMonth = $month + 1;  if ($nextMonth >)  {  $nextMonth = 1   $mnYear = $nextYear; &nbsp}    //Calendar header   $html = <<<html <table width= "$" border= "1" >   <tr align= "center" >     <TD>&L T;a href= "? y= $pretYear" > Last year </a></td>     <td><a href= "? y= $mpYear &m= $preMonth" > Last month </a></td>      <td><a href= "?" > Back to today </a></td>     <Td><a href= "? y= $mnYear &m= $nextMonth" > next month </a></td>  <td><a href= "? y=$ Nextyear "> next year </a></td>   </tr>   <tr align=" center ">     <TD colspan= "5" >{$year} year {$month} month </td>   </tr>   <tr>    <TD colspan= "5" >   <table width= "100%" border= "1" >    <tr align= "center" >     <TD style= " Background-color: #DAF0DD; " > Monday </td>     <TD style= "Background-color: #DAF0DD;" > Tuesday </td>     <TD style= "Background-color: #DAF0DD;" > Wednesday </td>     <TD style= "Background-color: #DAF0DD;" > Thursday </td>     <TD style= "Background-color: #DAF0DD;" > Friday </td>     <TD style= "background-color: #F60; color: #fff; font-weight:bold;" > Saturday </td>     <TD style= "background-color: #F60; color: #fff; font-weight:bold;" > Sunday </td>    </Tr> HTML;     $currentDay = $nowDate->format (' y-m-j ');    //The last day of the month   $creatDate = new DateTime ("$year-$nextMonth-0");   $lastday = $creatDate->format (' J ');   $creatDate = NULL;    //cycle output days   $day = 1;   $line = ';  while ($day <= $lastday)  {  $cday = $year. '-' . $month. '-' . $day;    //current day of the week   $creatDate = new DateTime ("$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 > $day </td>";    //week end   if ($nowWeek = = 7)   {    $line. = ' </tr> ';     $html. = $line;     $line = ' <tr align= ' center ' > ';  }    //All month end   if ($day = = $lastday)   {   if ($nowWeek!= 7)    {    $line. = Str_repeat (' <td> </td> ', 7-$nowWeek);   &nbsp     $line. = ' </tr> ';     $html. = $line;      break;  }     $day + +; &NBSP}     $html. = <<<html   </table>   </td>   </tr> </ Table> HTML;  return $html; }  

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