Question

我有以下php倒计时脚本，倒计时到日期和时间。请参阅以下示例：

    <SCRIPT language="JavaScript" SRC="countdown.php?timezone=US/Pacific&countto=2011-06-25 00:00:00&do=t&data=Sorry, This Offer Has Expired."></SCRIPT>

并且countdown.php：

<?php
// we will be sending Javascript codes
header('Content-Type: text/javascript'); 

// select the timezone for your countdown
$timezone = trim($_GET['timezone']);
putenv("TZ=$timezone");

// Counting down to New Year's on 2020
$countdown_to = trim($_GET['countto']); // 24-Hour Format: YYYY-MM-DD HH:MM:SS"

// Getting the current time
$count_from = date("Y-m-d H:i:s"); // current time -- NO NEED TO CHANGE

// Date difference function. Will be using below
function datediff($interval, $datefrom, $dateto, $using_timestamps = false) {
  /*
$interval can be:
yyyy - Number of full years
q - Number of full quarters
m - Number of full months
y - Difference between day numbers
  (eg 1st Jan 2004 is "1", the first day. 2nd Feb 2003 is "33". The datediff is "-32".)
d - Number of full days
w - Number of full weekdays
ww - Number of full weeks
h - Number of full hours
n - Number of full minutes
s - Number of full seconds (default)
  */

  if (!$using_timestamps) {
    $datefrom = strtotime($datefrom, 0);
    $dateto = strtotime($dateto, 0);
  }
  $difference = $dateto - $datefrom; // Difference in seconds

  switch($interval) {

case 'yyyy': // Number of full years

  $years_difference = floor($difference / 31536000);
  if (mktime(date("H", $datefrom), date("i", $datefrom), date("s", $datefrom), date("n",          $datefrom), date("j", $datefrom), date("Y", $datefrom)+$years_difference) > $dateto) {
    $years_difference--;
  }
  if (mktime(date("H", $dateto), date("i", $dateto), date("s", $dateto), date("n", $dateto), date("j", $dateto), date("Y", $dateto)-($years_difference+1)) > $datefrom) {
    $years_difference++;
  }
  $datediff = $years_difference;
  break;

case "q": // Number of full quarters

  $quarters_difference = floor($difference / 8035200);
  while (mktime(date("H", $datefrom), date("i", $datefrom), date("s", $datefrom), date("n", $datefrom)+($quarters_difference*3), date("j", $dateto), date("Y", $datefrom)) < $dateto) {
    $months_difference++;
  }
  $quarters_difference--;
  $datediff = $quarters_difference;
  break;

case "m": // Number of full months

  $months_difference = floor($difference / 2678400);
  while (mktime(date("H", $datefrom), date("i", $datefrom), date("s", $datefrom), date("n", $datefrom)+($months_difference), date("j", $dateto), date("Y", $datefrom)) < $dateto) {
    $months_difference++;
  }
  $months_difference--;
  $datediff = $months_difference;
  break;

case 'y': // Difference between day numbers

  $datediff = date("z", $dateto) - date("z", $datefrom);
  break;

case "d": // Number of full days

  $datediff = floor($difference / 86400);
  break;

case "w": // Number of full weekdays

  $days_difference = floor($difference / 86400);
  $weeks_difference = floor($days_difference / 7); // Complete weeks
  $first_day = date("w", $datefrom);
  $days_remainder = floor($days_difference % 7);
  $odd_days = $first_day + $days_remainder; // Do we have a Saturday or Sunday in the remainder?
  if ($odd_days > 7) { // Sunday
    $days_remainder--;
  }
  if ($odd_days > 6) { // Saturday
    $days_remainder--;
  }
  $datediff = ($weeks_difference * 5) + $days_remainder;
  break;

case "ww": // Number of full weeks

  $datediff = floor($difference / 604800);
  break;

case "h": // Number of full hours

  $datediff = floor($difference / 3600);
  break;

case "n": // Number of full minutes

  $datediff = floor($difference / 60);
  break;

default: // Number of full seconds (default)

  $datediff = $difference;
  break;
  }    

  return $datediff;
    }

// getting Date difference in SECONDS
$diff = datediff("s", $count_from, $countdown_to);
?>

// Heres where the Javascript starts
countdown = <?=$diff?>;

// Converting date difference from seconds to actual time
function convert_to_time(secs)
{
secs = parseInt(secs);  
hh = secs / 3600;   
hh = parseInt(hh);  
mmt = secs - (hh * 3600);   
mm = mmt / 60;  
mm = parseInt(mm);  
ss = mmt - (mm * 60);   

if (hh > 23)    
{   
   dd = hh / 24;    
   dd = parseInt(dd);   
   hh = hh - (dd * 24); 
} else { dd = 0; }  

if (ss < 10) { ss = "0"+ss; }   
if (mm < 10) { mm = "0"+mm; }   
if (hh < 10) { hh = "0"+hh; }   
if (dd == 0) { return (hh+":"+mm+":"+ss); } 
else {  
    if (dd > 1) { return (dd+" days "+hh+":"+mm+":"+ss); }
    else { return (dd+" day "+hh+":"+mm+":"+ss); }
}   
}

// Our function that will do the actual countdown
function do_cd()
{
if (countdown < 0)  
{   
    <?php
        if(strtolower(trim($_GET['do'])) == 'r' )
        {
    ?>
    // redirect web page
    document.location.href = "<?=$_GET['data']?>";
    <?php } ?>

    <?php
        if(strtolower(trim($_GET['do'])) == 't' )
        {
    ?>
    // change text
    document.getElementById('cd').innerHTML = "<?=$_GET['data']?>";
    <?php } ?>

}   
else    
{   
    document.getElementById('cd').innerHTML = convert_to_time(countdown);
    setTimeout('do_cd()', 1000);
}   
countdown = countdown - 1;  
}

document.write("<div id='cd'></div>\n");

do_cd();

<? exit(); ?>

有人可以告诉我如何修改此脚本以允许它在一个页面上的多个位置使用。如果每页倒计时数超过倒数，则无法正常工作。

提前致谢！

Answer 1

PHP文件正在生成针对特定ID的JavaScript：

document.getElementById('cd')

页面上应该只有一个ID，因此定位多个ID会中断。您可能希望切换到不同的ID和多个countdown.php文件作为快速解决方案，或者重写PHP文件，以便它将从客户端传入的ID作为GET参数。

那就是说，我强烈建议放弃整个解决方案。 PHP脚本不会清理或验证输入。我可以通过操作GET字符串在您的Web服务器上运行代码。它似乎也是不必要的开销 - 这一切都可以在客户端完成。

我认为你应该考虑一个jQuery countdown plugin，它确实有时区支持。

php倒计时脚本 - 每页多次倒计时

1 个答案: