我从以下数据库中获取数据:
我有发送该数据的arduino-box。
用这个CSS&显示数据。 HTML代码:
<div class="event">
<img src="http://dummyimage.com/80x70/f00/fff.png" alt="picture" />
<p>Room 2</p>
<p class="patient-name">Jon Harris</p>
<p class="event-text">This is a pixel. A flying pixel!</p>
<p class="event-timestamp">feb 2 2011 - 23:01</p>
</div>
.event {
display:block;
background: #ececec;
width:380px;
padding:10px;
margin:10px;
overflow:hidden;
text-align: left;
}
.event img {
display:block;
float:left;
margin-right:10px;
}
.event p {
font-weight: bold;
}
.event img + p {
display:inline;
}
.patient-name {
display:inline;
color: #999999;
font-size: 9px;
line-height:inherit;
padding-left: 5px;
}
.event-text{
color: #999999;
font-size: 12px;
padding-left: 5px;
}
.event-timestamp{
color: #000;
padding-left: 5px;
font-size: 9px;
}
这是我的PHP代码:
<!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>
<title>DASHBOARD - Arduino 3</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<?php
$con = mysql_connect("localhost","*****","***");
if(!con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("arduino_db",$con);
$result = mysql_query("SELECT * FROM events");
//Start container
echo " <div id='background_container'> ";
while($row = mysql_fetch_array($result))
{
echo "<div class='event'>";
echo "<img src='img/ev_img/red.jpg' alt='picture' />";
echo "<p>" . $row['inneboende'] . "</p>";
echo "<p class='patient-name'>" . "$row['overvakare']" . "</p>";
echo "<p class='event-text'>" . "$row['handelse']" . "</p>";
echo "<p class='event-timestamp'>" . "$row['tid']" . "</p>";
echo "</div>";
}
//end container
echo "</div>"
mysql_close($con);
?>
</body>
</html>
arduino框正在向数据库发送数据..让我们说每3秒。我不想每隔5秒按F5来获取新数据。我应该使用AJAX吗?我已经在网上阅读了一些AJAX,但我还没有找到任何好的方法。
答案 0 :(得分:3)
将它放在一个单独的php文件中,例如getEvents.php:
<?php
$con = mysql_connect("localhost","*****","***");
if(!con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("arduino_db",$con);
$result = mysql_query("SELECT * FROM events");
while($row = mysql_fetch_array($result))
{
echo "<div class='event'>";
echo "<img src='img/ev_img/red.jpg' alt='picture' />";
echo "<p>" . $row['inneboende'] . "</p>";
echo "<p class='patient-name'>" . "$row['overvakare']" . "</p>";
echo "<p class='event-text'>" . "$row['handelse']" . "</p>";
echo "<p class='event-timestamp'>" . "$row['tid']" . "</p>";
echo "</div>";
}
mysql_close($con);
然后,加载jquery并将以下内容放在页面的头部:
<script type="text/javascript">
$(document).ready(function() {
$.get('getEvents.php', function (data) {
$('#background_container').html(data);
});
});
</script>
注意:这不是您应该使用的确切代码,请查看并更改它以使其正常工作。
答案 1 :(得分:2)
如果您只是每5秒刷新一次页面,则应该使用javascript并查看setTimeout:
setTimeout("location.reload(true);",5000);
5000等于5秒。