flot和mysql jquery
[英]flot ,and mysql jquery
問題描述
使用flot從數據庫中繪制數據時出現問題。 我在php中使用json_encode嘗試獲取繪圖數據，但未成功。 下面是我的代碼，請協助
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>`enter code here`
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Flot Examples</title>
<link href="./flot/layout.css" rel="stylesheet" type="text/css">
<!--[if lte IE 8]><script language="javascript" type="text/javascript" src="../excanvas.min.js"></script><![endif]-->
<script language="javascript" type="text/javascript" src="./flot/jquery.js"></script>
<script language="javascript" type="text/javascript" src="./flot/jquery.flot.js"></script>
</head>
<body>
<h1>Database Plotting</h1>
<div id="placeholder" style="width:600px;height:300px;"></div>
<?php
$server = "localhost";
$user="user";
$password="password";
$database = "database";
$connection = mysql_connect($server,$user,$password);
$db = mysql_select_db($database,$connection);
$query = "SELECT x_value, y_value FROM table";
$result = mysql_query($query);
while($row = mysql_fetch_assoc($result))
{
$dataset1[] = array($row['x_value'],$row['y_value']);
}
?>
<script type="text/javascript">
$(function () {
var dataset1 = <?php echo json_encode($dataset1,); ?>;
$.plot($("#placeholder"),[dataset1] );
});
</script>
</body>
</html>
因此，來自json-encode dataset1的輸出為以下[["1380111342","0"],["1380111679","0"],["1380112099","20"],["1380112109","300"],["1380112114","40"],["1380112120","56"],["1380112127","36"],["1380112132","40"],["1380112138","78"]]
2 個解決方案
解決方案1
0 2013-09-26 11:02:11
嘗試更改此行：
$.plot($("#placeholder"), [dataset1] );
對此：
$.plot($("#placeholder"), [JSON.parse(dataset1)]);
解決方案2
0 2013-11-15 09:20:40
var dataset1 = <?php echo json_encode($dataset1,); ?>;
在“ $ dataset1”之后丟失逗號，並在末尾使用分號。
這應該可以正常工作：
var dataset1 = <?php echo json_encode($dataset1); ?>
jQuery Flot Pie與PHP MYSQL
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