我如何每隔几秒钟查询数据库? [英] How can I query the database every few seconds?
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问题描述
所以,这是我的代码:
<?php
//Connect to the database
include("config.php");
//Query the database and get the count
$result = mysql_query("SELECT * FROM ads");
$num_rows = mysql_num_rows($result);
?>
如何使它每秒钟查询数据库的计数?
How can I make it so it query's the database for the count every few seconds?
推荐答案
单独保存PHP脚本(在我的示例下面的thescript.php)
Save your PHP script separately (in my example below thescript.php)
<?php
//Connect to the database
include("config.php");
//Query the database and get the count
$q = mysql_query("SELECT count(*) as num FROM ads");
$count = mysql_fetch_result($q,0,'num');
echo $count;
?>
然后在home.php文件中使用AJAX / javascript / jQuery:
Then use AJAX/javascript/jQuery in your home.php file:
<script>
$(function(){
function loadNum()
{
$('h1.countdown').load('thescript.php');
setTimeout(loadNum, 5000); // makes it reload every 5 sec
}
loadNum(); // start the process...
});
</script>
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