脚本宝典收集整理的这篇文章主要介绍了在php mysql中使用Google Chart API显示条形图，脚本宝典觉得挺不错的，现在分享给大家，也给大家做个参考。
googleapi.PHP
<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(object) { // Create our data table out of JSON data loaded From server. VAR data = new google.visualization.DataTable(object); var options = { tITle: 'test API',is3D: 'true',width: 200,height: 100 }; // Instantiate and draw our chart,passing in some options. // Do not forget to check your div ID var chart = new google.visualization.ColumnChart(document.getElementById('chart_div')); chart.draw(data,options); } function show() { XMlhttp = new XMLHttPRequest(); xmlhttp.open("GET","getdata.PHP?name=jaspreet",true); xmlhttp.send(); xmlhttp.onreadystatechange = getResponse; } function getResponse() { if(xmlhttp.readyState==4){ alert(xmlhttp.responseText); var obj = JSON.parse(xmlhttp.responseText); drawChart(obj); } } </script> </head> <body> <!--this is the div that will hold the pie chart--> <div id="chart_div"></div> <select id="name" onchange="show();"> <option value="test">test</option> <option value="test1">test1</option> <option value="test2">test2</option> </select> </body> </html>
访问getdata.PHP
<?PHP $con=MysqL_connect("localhost","root","") or die("Failed to connect with database!!!!"); MysqL_select_db("student",$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 marks where name='jas'"); /* --------------------------- example data: Table (Chart) -------------------------- marks percentage English 30 Maths 40 Science 44 */ $rows = array(); //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' => 'subject','type' => 'string'),array('label' => 'marks','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['subject']); // Values of each slice $temp[] = array('v' => (int) $r['marks']); $rows[] = array('c' => $temp); } $table['rows'] = $rows; $jsonTable = json_encode($table); echo $jsonTable; ?>
这是一个例子：
<?PHP $i = 0; $grab = MysqL_query("SELECT * FROM `productList` WHERE 1"); $pricelist = MysqL_fetch_array($grab); $numberofproducts = MysqL_num_rows($grab); ?> <script type="text/javascript" src="https://www.google.com/jsapi"></script> <script type="text/javascript"> google.load("visualization","1",{packages:["corechart"]}); google.setOnLoadCallback(drawChart); function drawChart() { var data = google.visualization.arrayToDataTable([ ['parts','Prices'],['Number of Products',<?PHP echo $numberofproducts;?>],]); var options = { title: 'Number of Products',hAxis: {title: '',titleTextStyle: {color: 'red'}},width: 980,height: 200 }; var chart = new google.visualization.ColumnChart(document.getElementById('chart_div')); chart.draw(data,options); }
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