本文介绍了一个基于HTML和PHP的在线系统，用户可以输入支付宝订单号下载报告，并通过控制器检查订单状态来确保报告的可用性。
页面效果：
//html网页代码：
<html xmlns="http://www.w3.org/1999/xhtml">
<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
.order{width:521px;height:20px;padding:9px 7px;border:1px solid #b8b8b8;border-right:0;text-align:left;height:38px;}
.btn{color:white;background-color:#38f;height:38px;font-size:18px;border:0;}
html { height:100%;}
body { height:100%; text-align:center;}
.centerDiv { display:inline-block; zoom:1; *display:inline; vertical-align:middle; text-align:center; width:800px; padding:10px; }
.hiddenDiv { height:100%; overflow:hidden; display:inline-block; width:1px; overflow:hidden; margin-left:-1px; zoom:1; *display:inline; *margin-top:-1px; _margin-top:0; vertical-align:middle;}
</style>
</head>
<body>
<form name="f" id="form" action="" method="post">
<div class="centerDiv">
<input placeholder="请输入支付宝订单号" class="order" name="order_alino" maxlength="100" type="text">
<input value="下载报告" class="btn" id="submit" name="submit" type="submit">
<div class="centerDiv2">
<br><span name="ShowEsg" id="ShowEsg" style="color: red; font-weight: bold">{$message}</span>
<span name="report_path" id="report_path" style="color: blue; font-weight: bold"><a href="{$data['report_path']}">{$data['report_path']}</a></span>
</div>
</div>
<div class="hiddenDiv"></div>
</form>
</body>
</html>
控制器获取模板输出数据：
function down_load_report(){
$CheckTask = M('CheckTask');
if(IS_POST){
$cond['order_alino'] = $_POST['order_alino'];
$data = $CheckTask->where($cond)->find();
if(!$data){
$this->assign('message','该订单不存在') ;
$this->display();
return false;
}
elseif($data['result_status']==0){
$this->assign('message','论文检测还未完成，请等检测完成后再下载') ;
$this->display();
return false;
}
elseif($data['result_status']==2){
$this->assign('message','论文检测失败，请重新上传论文进行检测') ;
$this->display();
return false;
}else{
$this->assign('message','请点击链接下载：') ;
$this->assign('data',$data) ;
$this->display();
}
}else
$this->display();
}
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