Question

有人可以帮助我如何将这些mysql转换为mysqli吗？
我需要这个，因为mysql-extention导致这个警告：
“不推荐使用mysql扩展，将在...中删除”

我尝试了ConvertingTool，但它会响应警告/错误。我还尝试在google und w3school的帮助下进行转换。

使用旧的已弃用的mysql版本，它看起来像THAT

但如果我尝试使用mysqli-extention，那么图表就不会出现了。

这是连接器。

<?php
define('DB_SERVER',"localhost");
define('DB_NAME',"Datenbank-Name");
define('DB_USER',"Datenbank-Username");
define('DB_PASSWORD',"Datenbank-Passwort");

$conn = mysql_connect(DB_SERVER, DB_USER, DB_PASSWORD);
if(is_resource($conn))
{
mysql_select_db(DB_NAME, $conn);
mysql_query("SET NAMES 'utf8'", $conn);
mysql_query("SET CHARACTER SET 'utf8'", $conn);
}

define("listViewTempPeriod", 24); // Anzeige der Stunden die ausgegeben werden sollen
define("NUMSENSORS", 2);          // Anzahl der Sensoren deren Werte in der Datenbank stehen
?>

功能。

<?php

function delLastChar($string="")
{
$t = substr($string, 0, -1);
return($t);
}

function getChartValues($sensorID=0, $timePeriodInHours=24)
{
$q_data  = mysql_query("SELECT DATE_FORMAT(datumzeit,'%H') AS STUNDE, sensorwert 
                FROM arduino_sensorwerte 
                WHERE sensorid = ".$sensorID." AND datumzeit >= date_sub(now(), interval ".$timePeriodInHours." hour) and datumzeit <= now() 
                GROUP BY DATE_FORMAT(datumzeit, '%Y-%m-%d %H') 
                ORDER BY datumzeit DESC") or die(mysql_error()); 
$n_data = mysql_num_rows($q_data);
if($n_data > 0)
{
$chartValues   = '';
$stundenValues = '';

while($r_data = mysql_fetch_array($q_data))
{
$chartValues   .= $r_data['sensorwert'].',';  // Einzelne Werte durch Komma trennen
$stundenValues .= $r_data['STUNDE'].',';      // Einzelne Werte durch Komma trennen
}

$chartValues   = delLastChar($chartValues);     // Komma hinter dem letzten Temperaturwert entfernen
$stundenValues = delLastChar($stundenValues);   // Komma hinter letzter Stunde entfernen

return array($chartValues, $stundenValues);
}
}

function getSensorSettings($sensorID=0)
{
$q_data  = mysql_query("SELECT mpcharttype, mplinetype, mpname, mpdescription, mplinecolor 
                  FROM arduino_messpunkte 
                  WHERE messpunktid = ".mysql_real_escape_string($sensorID)) or die(mysql_error()); 
$n_data = mysql_num_rows($q_data);
if($n_data > 0)
{
$r_data = mysql_fetch_array($q_data);

switch ($r_data['mpcharttype']) 
{
case 1:
$mpChartType = 'spline';
break;
case 2:
$mpChartType = 'line';
break;
case 3:
$mpChartType = 'areaspline';
break;
case 4:
$mpChartType = 'area';
break;
case 5:
$mpChartType = 'column';
break;    
case 6:
$mpChartType = 'bar';
break;    
}

switch ($r_data['mplinetype']) 
{
case 1:
$mpLineType = 'solid';
break;
case 2:
$mpLineType = 'ShortDash';
break;
case 3:
$mpLineType = 'ShortDot';
break;
case 4:
$mpLineType = 'ShortDashDot';
break;
case 5:
$mpLineType = 'ShortDashDotDot';
break;    
case 6:
$mpLineType = 'Dot';
break;
case 7:
$mpLineType = 'Dash';
break;
case 8:
$mpLineType = 'LongDash';
break;
case 9:
$mpLineType = 'DashDot';
break;
case 10:
$mpLineType = 'LongDashDot';
break;
case 11:
$mpLineType = 'LongDashDotDot';
break;              
}

$mpName = $r_data['mpname'];
$mpDescription = $r_data['mpdescription'];
$mpLineColor = $r_data['mplinecolor'];

return array($mpChartType, $mpLineType, $mpName, $mpDescription, $mpLineColor);
}
}
?>

主页上的“示例”调用：

 <?php

 include_once("inc/db.inc.php");
 include_once("inc/functions.inc.php");

 if(!isset($_GET['timePeriodInHours'])) $_GET['timePeriodInHours'] = 24; else $_GET['timePeriodInHours'] = $_GET['timePeriodInHours'];
 if(!isset($_GET['chartStyle'])) $_GET['chartStyle'] = 1; else $_GET['chartStyle'] = $_GET['chartStyle'];

 $colors = array('#89A54E','#80699B','#3D96AE','#DB843D','#92A8CD','#A47D7C','#B5CA92');

 for($i=0;$i<NUMSENSORS;$i++)
 {
   list($chartValues[], $stundenValues[]) = getChartValues($i+1, $_GET['timePeriodInHours'], 1);
 }

 $stundenValues = $stundenValues[0];
 ?>
 <!DOCTYPE html>
 <html>
   <head>
     <title>Sensoren &Uuml;bersicht</title>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
     <meta http-equiv="refresh" content="300">
     <meta name="Robots" content="index,follow">
     <link rel="stylesheet" type="text/css" href="css/highcharts.css">
     <script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>

 <script type="text/javascript">
 $(function () 
 {
   var chart;

   $(document).ready(function() 
   {        
     chart = new Highcharts.Chart(
     {
       chart: 
       {
         renderTo: 'container'
       },
       title: 
       {
         text: 'Temperaturwerte der letzten <?php echo $_GET['timePeriodInHours'];?> Stunden'
       },
       subtitle: 
       {
         text: 'Alle Messstellen'
       },
       xAxis: 
       {
         title:
         {
           text: ''
         },
         categories: [<?php echo $stundenValues;?>]
       },      
       yAxis:
       {   
         title: 
         {
           text: ''         
         },      
         labels: 
         {
           formatter: function() 
           {
             return this.value +'°C'
           }
         }
       },
       tooltip: 
       {
         crosshairs: true,
         shared: true
       },
       tooltip: 
       {
         formatter: function() 
         {
           return '<b>'+ this.series.name +'</b>'+this.x +' Uhr:  '+ this.y +'°C';
         }
       },  
       legend: 
       {
         enabled: true
       },
       credits:
       {
         enabled: false
       },
       series:
       [
 <?php 
       for($i=0;$i<=NUMSENSORS;$i++)
       {
         if(!empty($chartValues[$i]))
         {
           list($mpChartType, $mpLineType, $mpName, $mpDescription, $mpLineColor) = getSensorSettings($i+1);
 ?>        {
             type: '<?php echo $mpChartType;?>',
             dashStyle: '<?php echo $mpLineType;?>',
             name: '<?php echo $mpName;?>', 
             color: '#<?php echo $mpLineColor;?>', 
             data: [<?php echo $chartValues[$i];?>],
             marker: 
             {
               symbol: 'square',
               enabled: false,
               states: 
               {
                 hover: 
                 {
                   symbol: 'square',
                   enabled: true,
                   radius: 8
                 }
               }
             }    
           },
 <?php  
         }
       } //for 
 ?>
       ] //series      
     });
   });  
 });
 </script>

   </head>
 <body>

 <div id="wrapper">
   <script src="es_scripts/highcharts.js"></script>
   <div id="container"></div>
 </div>

 </body>
 </html>

Answer 1

如果您要将代码转换为mysqli_*，则应采用prepared statement方式。

让我们在db.inc.php中重新建立您的MySQL连接：

<?php

  $conn = new mysqli("localhost", "Datenbank-Username", "Datenbank-Passwort", "Datenbank-Name");

  /* CHECK CONNECTION */
  if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
  }

  /* CHANGE CHARACTER SET TO utf8 */
  if (!$conn->set_charset("utf8")) {
    printf("Error loading character set utf8: %s\n", $mysqli->error);
    exit();
  } else {
    printf("Current character set: %s\n", $mysqli->character_set_name());
  }

  define("listViewTempPeriod", 24); // Anzeige der Stunden die ausgegeben werden sollen
  define("NUMSENSORS", 2);          // Anzahl der Sensoren deren Werte in der Datenbank stehen

?>

存储函数的文件（functions.inc.php）：

<?php

  function delLastChar($string="")
  {
    global $conn;
    $t = substr($string, 0, -1);
    return($t);
  }

  function getChartValues($sensorID=0, $timePeriodInHours=24)
  {

    global $conn;

    if($stmt = $conn->prepare("SELECT DATE_FORMAT(datumzeit, '%H') AS STUNDE, sensorwert FROM arduino_sensorwerte WHERE sensorid = ? AND datumzeit >= date_sub(NOW(), interval ? hour) AND datumzeit <= NOW() GROUP BY DATE_FORMAT(datumzeit, '%Y-%m-%d %H') ORDER BY datumzeit DESC")){
      $stmt->bind_param("ii", $sensorID, $timePeriodInHours);
      $stmt->execute();
      $stmt->store_result();
      $n_data = $stmt->num_rows;
      $stmt->bind_result($stunde, $sensorwert);

      $chartValues = '';
      $stundenValues = '';

      while($stmt->fetch()){

        $charValues    = $sensorwert;
        $stundenValues = $stunde;

      } /* END OF WHILE LOOP */
      $stmt->close();
    } /* END OF PREPARED STATEMENT */

    $chartValues   = delLastChar($chartValues);     // Komma hinter dem letzten Temperaturwert entfernen
    $stundenValues = delLastChar($stundenValues);   // Komma hinter letzter Stunde entfernen

    return array($chartValues, $stundenValues);

  } /* END OF getChartValues FUNCTION */

  function getSensorSettings($sensorID=0)
  {

    global $conn;

    $stmt = $conn->prepare("SELECT mpcharttype, mplinetype, mpname, mpdescription, mplinecolor FROM arduino_messpunkte WHERE messpunktid = ?");
    $stmt->bind_param("i", $sensorID);
    $stmt->execute();
    $stmt->store_result();
    $n_data = $stmt->num_rows;
    $stmt->bind_result($mpcharttype, $mplinetype, $mpName, $mpDescription, $mpLineColor);

    if($n_data > 0)
    {
      while($stmt->fetch()){

        switch ($mpcharttype) 
        {
          case 1:
            $mpChartType = 'spline';
            break;
          case 2:
            $mpChartType = 'line';
            break;
          case 3:
            $mpChartType = 'areaspline';
            break;
          case 4:
            $mpChartType = 'area';
            break;
          case 5:
            $mpChartType = 'column';
            break;    
          case 6:
            $mpChartType = 'bar';
            break;    
          } /* END OF FIRST SWITCH */

        switch ($mplinetype) 
        {
          case 1:
            $mpLineType = 'solid';
            break;
          case 2:
            $mpLineType = 'ShortDash';
            break;
          case 3:
            $mpLineType = 'ShortDot';
            break;
          case 4:
            $mpLineType = 'ShortDashDot';
            break;
          case 5:
            $mpLineType = 'ShortDashDotDot';
            break;    
          case 6:
            $mpLineType = 'Dot';
            break;
          case 7:
            $mpLineType = 'Dash';
            break;
          case 8:
            $mpLineType = 'LongDash';
            break;
          case 9:
            $mpLineType = 'DashDot';
            break;
          case 10:
            $mpLineType = 'LongDashDot';
            break;
          case 11:
            $mpLineType = 'LongDashDotDot';
            break;              
        } /* END OF SECOND SWITCH */

      } /* END OF WHILE LOOP */

      return array($mpChartType, $mpLineType, $mpName, $mpDescription, $mpLineColor);

    } /* END OF CHECKING NUMBER OF RESULTS */

  } /* END OF getSensorSettings FUNCTION */

?>

如果您希望查询只有一行结果，则不需要再循环它。

Answer 2

我需要这个，因为mysql-extention导致这个警告：
“不推荐使用mysql扩展，将在...中删除”

只需在config / bootstrap文件中添加/更改此代码

即可

error_reporting(E_ALL & ~E_DEPRECATED);

并且此错误将消失。

“它没有解决问题”？ - 哦，是的。

但问题不在于你认为的问题。

要解决真正的问题，您必须花费大量时间，因为首先需要花费几年的时间来学习编程，然后花一些时间来完成REWRITE代码。因为这段代码唯一的问题是它过时且不安全的DESIGN。

它的设计是你真正需要改变的，而不是简单的API调用。

如果你准备好了 - 好吧，慢慢来。但是在学习和重写时，您可以使用此选项作为临时解决方案。
如果您不是 - 请保留此选项。因为从一个API到另一个API的机械转换无论如何都不会有任何好处，因此保持这段代码不安全。

php + Highcharts.js +从mysql转换为mysqli会导致错误

2 个答案: