【发布时间】：2012-10-11 06:00:46
【问题描述】：
我进行了很多搜索，以找到一个使用 MySQL 表数据作为数据源生成 Google 图表的好示例。我搜索了几天，发现很少有示例可用于使用 PHP 和 MySQL 的组合生成 Google 图表（饼图、条形图、列图、表格）。我终于设法让一个示例正常工作。
我之前从StackOverflow那里得到了很多帮助，所以这次我会回报一些。
我有两个例子；一个使用 Ajax，另一个不使用。今天只展示非Ajax的例子。
用法：
要求：PHP、Apache 和 MySQL 安装： --- 使用 phpMyAdmin 创建数据库并将其命名为“chart” --- 使用 phpMyAdmin 创建一个表并将其命名为“googlechart”并制作 确保表只有两列，因为我使用了两列。然而， 如果您愿意，您可以使用超过 2 列，但您必须更改 为此编写一点代码 --- 指定列名如下：“weekly_task”和“percentage” --- 向表中插入一些数据 --- 对于百分比列，仅使用数字 --------------------------------- 示例数据：表格（googlechart） --------------------------------- 每周任务百分比 ------------ ---------- 睡眠 30 看电影 10 工作 40 练习 20PHP-MySQL-JSON-Google 图表示例：
<?php
$con=mysql_connect("localhost","Username","Password") or die("Failed to connect with database!!!!");
mysql_select_db("Database Name", $con);
// The Chart table contains two fields: weekly_task and percentage
// This example will display a pie chart. If you need other charts such as a Bar chart, you will need to modify the code a little to make it work with bar chart and other charts
$sth = mysql_query("SELECT * FROM chart");
/*
---------------------------
example data: Table (Chart)
--------------------------
weekly_task percentage
Sleep 30
Watching Movie 40
work 44
*/
//flag is not needed
$flag = true;
$table = array();
$table['cols'] = array(
// Labels for your chart, these represent the column titles
// Note that one column is in "string" format and another one is in "number" format as pie chart only required "numbers" for calculating percentage and string will be used for column title
array('label' => 'Weekly Task', 'type' => 'string'),
array('label' => 'Percentage', 'type' => 'number')
);
$rows = array();
while($r = mysql_fetch_assoc($sth)) {
$temp = array();
// the following line will be used to slice the Pie chart
$temp[] = array('v' => (string) $r['Weekly_task']);
// Values of each slice
$temp[] = array('v' => (int) $r['percentage']);
$rows[] = array('c' => $temp);
}
$table['rows'] = $rows;
$jsonTable = json_encode($table);
//echo $jsonTable;
?>
<html>
<head>
<!--Load the Ajax API-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(<?=$jsonTable?>);
var options = {
title: 'My Weekly Plan',
is3D: 'true',
width: 800,
height: 600
};
// Instantiate and draw our chart, passing in some options.
// Do not forget to check your div ID
var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--this is the div that will hold the pie chart-->
<div id="chart_div"></div>
</body>
</html>
PHP-PDO-JSON-MySQL-Google 图表示例：
<?php
/*
Script : PHP-PDO-JSON-mysql-googlechart
Author : Enam Hossain
version : 1.0
*/
/*
--------------------------------------------------------------------
Usage:
--------------------------------------------------------------------
Requirements: PHP, Apache and MySQL
Installation:
--- Create a database by using phpMyAdmin and name it "chart"
--- Create a table by using phpMyAdmin and name it "googlechart" and make sure table has only two columns as I have used two columns. However, you can use more than 2 columns if you like but you have to change the code a little bit for that
--- Specify column names as follows: "weekly_task" and "percentage"
--- Insert some data into the table
--- For the percentage column only use a number
---------------------------------
example data: Table (googlechart)
---------------------------------
weekly_task percentage
----------- ----------
Sleep 30
Watching Movie 10
job 40
Exercise 20
*/
/* Your Database Name */
$dbname = 'chart';
/* Your Database User Name and Passowrd */
$username = 'root';
$password = '123456';
try {
/* Establish the database connection */
$conn = new PDO("mysql:host=localhost;dbname=$dbname", $username, $password);
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
/* select all the weekly tasks from the table googlechart */
$result = $conn->query('SELECT * FROM googlechart');
/*
---------------------------
example data: Table (googlechart)
--------------------------
weekly_task percentage
Sleep 30
Watching Movie 10
job 40
Exercise 20
*/
$rows = array();
$table = array();
$table['cols'] = array(
// Labels for your chart, these represent the column titles.
/*
note that one column is in "string" format and another one is in "number" format
as pie chart only required "numbers" for calculating percentage
and string will be used for Slice title
*/
array('label' => 'Weekly Task', 'type' => 'string'),
array('label' => 'Percentage', 'type' => 'number')
);
/* Extract the information from $result */
foreach($result as $r) {
$temp = array();
// the following line will be used to slice the Pie chart
$temp[] = array('v' => (string) $r['weekly_task']);
// Values of each slice
$temp[] = array('v' => (int) $r['percentage']);
$rows[] = array('c' => $temp);
}
$table['rows'] = $rows;
// convert data into JSON format
$jsonTable = json_encode($table);
//echo $jsonTable;
} catch(PDOException $e) {
echo 'ERROR: ' . $e->getMessage();
}
?>
<html>
<head>
<!--Load the Ajax API-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(<?=$jsonTable?>);
var options = {
title: 'My Weekly Plan',
is3D: 'true',
width: 800,
height: 600
};
// Instantiate and draw our chart, passing in some options.
// Do not forget to check your div ID
var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--this is the div that will hold the pie chart-->
<div id="chart_div"></div>
</body>
</html>
PHP-MySQLi-JSON-Google 图表示例
<?php
/*
Script : PHP-JSON-MySQLi-GoogleChart
Author : Enam Hossain
version : 1.0
*/
/*
--------------------------------------------------------------------
Usage:
--------------------------------------------------------------------
Requirements: PHP, Apache and MySQL
Installation:
--- Create a database by using phpMyAdmin and name it "chart"
--- Create a table by using phpMyAdmin and name it "googlechart" and make sure table has only two columns as I have used two columns. However, you can use more than 2 columns if you like but you have to change the code a little bit for that
--- Specify column names as follows: "weekly_task" and "percentage"
--- Insert some data into the table
--- For the percentage column only use a number
---------------------------------
example data: Table (googlechart)
---------------------------------
weekly_task percentage
----------- ----------
Sleep 30
Watching Movie 10
job 40
Exercise 20
*/
/* Your Database Name */
$DB_NAME = 'chart';
/* Database Host */
$DB_HOST = 'localhost';
/* Your Database User Name and Passowrd */
$DB_USER = 'root';
$DB_PASS = '123456';
/* Establish the database connection */
$mysqli = new mysqli($DB_HOST, $DB_USER, $DB_PASS, $DB_NAME);
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* select all the weekly tasks from the table googlechart */
$result = $mysqli->query('SELECT * FROM googlechart');
/*
---------------------------
example data: Table (googlechart)
--------------------------
Weekly_Task percentage
Sleep 30
Watching Movie 10
job 40
Exercise 20
*/
$rows = array();
$table = array();
$table['cols'] = array(
// Labels for your chart, these represent the column titles.
/*
note that one column is in "string" format and another one is in "number" format
as pie chart only required "numbers" for calculating percentage
and string will be used for Slice title
*/
array('label' => 'Weekly Task', 'type' => 'string'),
array('label' => 'Percentage', 'type' => 'number')
);
/* Extract the information from $result */
foreach($result as $r) {
$temp = array();
// The following line will be used to slice the Pie chart
$temp[] = array('v' => (string) $r['weekly_task']);
// Values of the each slice
$temp[] = array('v' => (int) $r['percentage']);
$rows[] = array('c' => $temp);
}
$table['rows'] = $rows;
// convert data into JSON format
$jsonTable = json_encode($table);
//echo $jsonTable;
?>
<html>
<head>
<!--Load the Ajax API-->
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.load('visualization', '1', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawChart);
function drawChart() {
// Create our data table out of JSON data loaded from server.
var data = new google.visualization.DataTable(<?=$jsonTable?>);
var options = {
title: 'My Weekly Plan',
is3D: 'true',
width: 800,
height: 600
};
// Instantiate and draw our chart, passing in some options.
// Do not forget to check your div ID
var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--this is the div that will hold the pie chart-->
<div id="chart_div"></div>
</body>
</html>
【问题讨论】：
-
Please, don't use
mysql_*functions in new code。它们不再维护and are officially deprecated。看到red box？改为了解prepared statements，并使用PDO 或MySQLi - this article 将帮助您决定哪个。如果你选择 PDO，here is a good tutorial. -
将示例作为答案不是更好吗？
-
这不是一个问题，而是一个非常有用的答案。
-
我投票结束这个问题，因为它不是一个问题，而是一个教程。它不适合被回答，也不能成为不正确的内容发布行为的榜样。
-
我投票结束这个问题，因为 Stack Overflow 是一个用于编写问题的网站，而不是用于发布您解决问题的方法的博客。
标签： php mysql json charts google-visualization