PHP MySQL Google Chart JSON - 完整示例 [已关闭]

php json mysql charts google-visualization

2022-08-30 06:50:48

我已经搜索了很多，以找到一个使用MySQL表数据作为数据源生成Google图表的好例子。我搜索了几天，意识到使用PHP和MySQL的组合生成Google图表（饼图，条形图，柱形图，表格）的示例很少。我终于设法让一个例子工作。

我以前从StackOverflow那里得到了很多帮助，所以这次我会返回一些。

我有两个例子;一个使用Ajax，另一个不使用。今天，我只展示非Ajax的例子。

用法：

    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

PHP-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>

答案 1

某些用户可能会在本地或服务器上遇到此错误：

syntax error var data = new google.visualization.DataTable(<?=$jsonTable?>);

这意味着他们的环境不支持短标签，解决方案是改用这个：

<?php echo $jsonTable; ?>

一切都应该工作正常！

答案 2

您可以更轻松地执行此操作。100%工作，你想要的

<?php
    $servername = "localhost";
    $username = "root";
    $password = "";  //your database password
    $dbname = "demo";  //your database name

    $con = new mysqli($servername, $username, $password, $dbname);

    if ($con->connect_error) {
        die("Connection failed: " . $con->connect_error);
    }
    else
    {
        //echo ("Connect Successfully");
    }
    $query = "SELECT Date_time, Tempout FROM alarm_value"; // select column
    $aresult = $con->query($query);

?>

<!DOCTYPE html>
<html>
<head>
    <title>Massive Electronics</title>
    <script type="text/javascript" src="loder.js"></script>
    <script type="text/javascript">
        google.charts.load('current', {'packages':['corechart']});

        google.charts.setOnLoadCallback(drawChart);
        function drawChart(){
            var data = new google.visualization.DataTable();
            var data = google.visualization.arrayToDataTable([
                ['Date_time','Tempout'],
                <?php
                    while($row = mysqli_fetch_assoc($aresult)){
                        echo "['".$row["Date_time"]."', ".$row["Tempout"]."],";
                    }
                ?>
               ]);

            var options = {
                title: 'Date_time Vs Room Out Temp',
                curveType: 'function',
                legend: { position: 'bottom' }
            };

            var chart = new google.visualization.AreaChart(document.getElementById('areachart'));
            chart.draw(data, options);
        }

    </script>
</head>
<body>
     <div id="areachart" style="width: 900px; height: 400px"></div>
</body>
</html>

loder.js 链接这里 loder.js