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php 时间倒计时

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
*{ margin:0px auto; padding:0px}
#djs{ 300px; height:100px;}
#fen{ float:left; 150px; height:100px; text-align:center; line-height:100px; vertical-align:middle; font-size:36px; font-weight:bold; font-family:微软雅黑; color:#60F}
#miao{ float:left; 150px; height:100px; text-align:center; line-height:100px; vertical-align:middle; font-size:36px; font-weight:bold; font-family:微软雅黑; color:#F00}
</style>
<script src="jquery-1.11.2.min.js"></script>
</head>

<body>
<?php
session_start();

//设置倒计时时间
$attr=array();
if(empty($_SESSION["djs"]))
{
$attr=array("fen"=>1,"miao"=>00);

$_SESSION["djs"]=$attr;
}
else
{
    $attr=$_SESSION["djs"];    
}
//开始倒计时
//用JS控制

?>
<div id="djs">
    <div id="fen"><?php echo $attr["fen"]; ?></div>
    <div id="miao"><?php echo $attr["miao"]; ?></div>
</div>
</body>
<script type="text/javascript">

$(document).ready(function(e) {
    
    window.setInterval("showtime()",1000);
    
});

function showtime()
{
    $.ajax({
        
        url:"huihuachuli3.php",
        dataType:"TEXT",
        success: function(data){
            if(data.trim()=="over")
            {
                $("#djs").text("结束倒计时");
            }
            else
            {
                var lie=data.trim().split("|");
                
                $("#fen").text(lie[0]);
                $("#miao").text(lie[1]);
            }
            }
        })
}





</script>
</html>

View Code

<?php
session_start();

$attr = $_SESSION["djs"];

$fen=$attr["fen"];

$miao=$attr["miao"];

if($fen==0 && $miao==0)
{
    echo "over";
    exit();    
}

if($miao==0)
{
    $attr["miao"]=59;
    $attr["fen"]=$attr["fen"]-1;    
}
else
{
    $attr["miao"]=$attr["miao"]-1;    
}

$_SESSION["djs"]=$attr;

echo "{$attr['fen']}|{$attr['miao']}";

View Code

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原文地址：https://www.cnblogs.com/bilibiliganbei/p/5621451.html