將Google Graph與PHP和AJAX相結合

我想構建一個動態圖形，通過Yahoo財經接收數據，並通過PHP自動通過PHP &自動更新AJAX與JS圖形的集成。將Google Graph與PHP和AJAX相結合

有人可以告訴我這是什麼問題嗎？我如何修復我的代碼？

自動圖形的主要思想是使用PHP從Yahoo Finance DATA API獲取更新。

完整的功能：

<html> 
    <head> 
    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> 
    <script type="text/javascript"> 
     google.charts.load('current', {'packages':['corechart']}); 
     google.charts.setOnLoadCallback(drawChart); 

     function drawChart() { 
     var data = google.visualization.arrayToDataTable([ 
      ['Year', 'Price'], 

<?php 
    if(isset($_GET['fetchOnly'])){ 
    $from = 'eur'; 
    $to  = 'usd'; 
    $url = 'http://finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s='. $from . $to .'=X'; 
    $response = array(); 
    $handle = fopen($url, 'r'); 
    if ($handle) { 

     while (($data = fgetcsv($handle, 1024, ',', '"')) !== FALSE) 
     { 
      $response['rate'] = $data[1]; 
      $response['time'] = date("Y-m-d H:i:s"); 
     } 
     fclose($handle); 

    } 

        echo "['"; 
      echo $response['time']; 
     echo "', "; 
    echo $response['rate']; 
echo "],"; 
     } 
?>  

     ]); 

     var options = { 
      title: 'Company Performance', 
      curveType: 'function', 
      legend: { position: 'bottom' } 
     }; 

     var chart = new google.visualization.LineChart(document.getElementById('curve_chart')); 

     chart.draw(data, options); 
     } 
    </script> 
    </head> 
    <body> 


<script> 
// run the function, it will re-run itself 
fetchRate(); 

function fetchRate() { 
    // create the new AJAX Object 
    xmlhttp = new XMLHttpRequest(); 
    // this handles the request 
    xmlhttp.onreadystatechange = function() { 
     if (xmlhttp.readyState == XMLHttpRequest.DONE) { 
      // if the request came back successfully 
      if(xmlhttp.status == 200){ 
       // write the response to a div 
       div = document.getElementById("curve_chart") 
       div.innerHTML = div.innerHTML + ''+ xmlhttp.responseText; 
      }else{ 
      // if the request had an error 
       div.innerHTML = div.innerHTML + 'Error fetching rates error code : '+xmlhttp.status; 
      } 
      // rerun this function to fetch updates 
      setTimeout(fetchRate,10000); 
     } 
    }; 
    // open the AJAX Object 
    xmlhttp.open("GET", "<?= basename(__FILE__) ?>?fetchOnly", true); 
    // send the AJAX request 
    xmlhttp.send(); 
} 
</script> 


    <div id="curve_chart" style="width: 900px; height: 500px"></div> 
    </body> 
</html>

來源

2016-08-03 TheQuestionerMan

「修復我的代碼」 ......嗯...... 「有什麼問題嗎？」 – Eiko

嗨...谷歌圖給我一個錯誤...問題是要結合在谷歌圖形代碼中的PHP部分... @eiko你能幫助我嗎？ – TheQuestionerMan

此：

<?php 
    if(isset($_GET['fetchOnly'])){ 
    $from = 'eur'; 
    $to  = 'usd'; 
    $url = 'http://finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s='. $from . $to .'=X'; 
    $response = array(); 
    $handle = fopen($url, 'r'); 
    if ($handle) { 

     while (($data = fgetcsv($handle, 1024, ',', '"')) !== FALSE) 
     { 
      $response['time'] = date("Y-m-d H:i:s"); 
      $response['rate'] = $data[1]; 

     } 
     fclose($handle); 

    } 
    echo json_encode(array_values($response)); 
exit(); 
     } 
?>  
<html> 
    <head> 
    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> 
    <script type="text/javascript"> 
    var data; 
    var chart; 
    var options; 
     google.charts.load('current', {'packages':['corechart']}); 
     google.charts.setOnLoadCallback(drawChart); 

     function drawChart() { 
     data = new google.visualization.DataTable(); 
     data.addColumn('date', 'Year'); 
data.addColumn('number', 'Price'); 

     options = { 
      title: 'Company Performance', 
      curveType: 'function', 
      legend: { position: 'bottom' } 
     }; 

     chart = new google.visualization.LineChart(document.getElementById('curve_chart')); 

     chart.draw(data, options); 
     } 
    </script> 
    </head> 
    <body> 


<script> 
// run the function, it will re-run itself 
fetchRate(); 

function fetchRate() { 
    // create the new AJAX Object 
    xmlhttp = new XMLHttpRequest(); 
    // this handles the request 
    xmlhttp.onreadystatechange = function() { 
     if (xmlhttp.readyState == XMLHttpRequest.DONE) { 
      // if the request came back successfully 
      if(xmlhttp.status == 200){ 
       // write the response to a div 
       var got= JSON.parse(xmlhttp.responseText); 
       got[0] = new Date(got[0]); 
       got[1] = parseFloat(got[1]); 
       data.addRow(got); 


     chart.draw(data, options); 
      }else{ 
      // if the request had an error 
       div.innerHTML = div.innerHTML + 'Error fetching rates error code : '+xmlhttp.status; 
      } 
      // rerun this function to fetch updates 
      setTimeout(fetchRate,10000); 
     } 
    }; 
    // open the AJAX Object 
    xmlhttp.open("GET", "<?= basename(__FILE__) ?>?fetchOnly", true); 
    // send the AJAX request 
    xmlhttp.send(); 
} 
</script> 


    <div id="curve_chart" style="width: 900px; height: 500px"></div> 
    </body> 
</html>

來源

2016-08-03 15:12:23

將Google Graph與PHP和AJAX相結合

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