1. 首页
  2. 问答
  3. 实时与AJAX/MySQL多个变量？

实时与AJAX/MySQL多个变量？

2012-01-24 34 views
0

我有一个动态的PHP文件，它从MySQL数据库加载关于一些继电器卡的数据，每个用户都有不同数量的继电器卡。所有卡都有8个继电器（状态1/0），8个输入（状态1/0）和2个模拟输入（状态从0到1024），这是针对每个卡的，一些用户将有1个，其他一些可以有8个我想尽快更新这些数据。我已经做了一个PHP脚本，触发所有的特定用户的继电器信息，在这种情况下，这是用户2.实时与AJAX/MySQL多个变量？

我认为最好的方式做我想要的，因为我已经阅读是从jQuery调用它，但我不明白如何更新许多变量。

这是我必须从MySQL获取最新状态的代码。 好的，这里是代码的更新，我完全分离了数据获取和GUI创建，所以我想要做的是实时显示get_states_gui.php文件从mysql获取到gui.php文件。有人能指引我走向好的方向，因为我现在完全失去了！感谢名单了很多这里的2个文件： 的gui.php：

<?php 
require_once('config.php'); 
$time = microtime(); 
$time = explode(' ', $time); 
$time = $time[1] + $time[0]; 
$start = $time; 
// We create connection to the MySQL database. 
$con = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD); 
    if(!$con) { 
     die('Failed to connect to server: ' . mysql_error()); 
    } 
//Select database 
$db = mysql_select_db(DB_DATABASE); 
    if(!$db) { 
     die("Unable to select database\n"); 
    } 
$req="SELECT * FROM cartes WHERE utilisateur=$user"; 
$result = mysql_query($req); 
    if(!$result) { 
     die('Query failed: ' . mysql_error()); 
    }  
$nb_iplab = mysql_num_rows($result); 
$b = "1"; 
while ($ligne = mysql_fetch_assoc($result)) 
{ 
    extract($ligne); 
    ${'nom'.$b} = $nom; 
    ${'mac'.$b} = $mac; 
    ${'ip'.$b} = $ip; 
    for ($i=1; $i <= "8"; $i++) 
    { 
     //We set Relays names for each IPLAB and get their states in the MySQL database. 
     ${'nomR'.$i.$b} = ${'nomR'.$i}; 
     $req = "SELECT * FROM states_log WHERE dev='R$i' AND mac='${'mac'.$b}' ORDER BY date_heure DESC LIMIT 1"; 
     $result2 = mysql_query($req); 
      if(!$result2) 
      { 
       die('Query failed: ' . mysql_error()); 
      } 
     $ligne = mysql_fetch_assoc($result2); 
     extract($ligne); 
     ${'stateR'.$i.$b} = $state; 
     if (${'stateR'.$i.$b} == "1") 
     { 
      ${'img_linkR'.$i.$b} = "<a href=set_states.php?ip=${'ip'.$b}&cmd=CR$i target=empty> <img src=img/toggle_1.png height=28></a>"; 
     } 
     else if (${'stateR'.$i.$b} == "0") 
     { 
      ${'img_linkR'.$i.$b} = "<a href=set_states.php?ip=${'ip'.$b}&cmd=SR$i target=empty> <img src=img/toggle_0.png height=28></a>"; 
     } 
     else 
     { 
      ${'img_linkR'.$i.$b} = "<a href=set_states.php?ip=${'ip'.$b}&cmd=CR$i target=empty> <img src=img/LED_yellow.png height=28></a>"; 
     }    
     //We set Inputs names for each IPLAB and get their states in the MySQL database. 
     ${'nomI'.$i.$b} = ${'nomI'.$i}; 
     ${'multI'.$i.$b} = ${'multI'.$i}; 
     ${'img_onI'.$i.$b} = ${'img_onI'.$i}; 
     ${'img_offI'.$i.$b} = ${'img_offI'.$i}; 
     ${'img_naI'.$i.$b} = ${'img_naI'.$i}; 
     $req = "SELECT * FROM states_log WHERE dev='I$i' AND mac='${'mac'.$b}' ORDER BY date_heure DESC LIMIT 1"; 
     $result2 = mysql_query($req); 
      if(!$result2) 
      { 
       die('Query failed: ' . mysql_error()); 
      } 
     $ligne = mysql_fetch_assoc($result2); 
     extract($ligne); 
     ${'stateI'.$i.$b} = $state; 
     if (${'stateI'.$i.$b} == "1") 
     { 
      ${'img_linkI'.$i.$b} = "<img src=img/${'img_onI'.$i.$b} height=28>"; 
     } 
     else if (${'stateI'.$i.$b} == "0") 
     { 
      ${'img_linkI'.$i.$b} = "<img src=img/${'img_offI'.$i.$b} height=28>"; 
     } 
     else 
     { 
      ${'img_linkI'.$i.$b} = "<img src=img/${'img_naI'.$i.$b} height=28>"; 
     } 
     // We check for how many times, the Inputs has changed state to 1, and we set them as a variable for counter. 
     $req = "SELECT count(*) FROM states_log WHERE dev='I$i' AND state='1' AND mac='${'mac'.$b}'"; 
     $result2 = mysql_query($req); 
      if(!$result2) 
      { 
       die('Query failed: ' . mysql_error()); 
      } 
     list (${'countI'.$i.$b}) = mysql_fetch_row ($result2); 
     if (isset(${'multI'.$i.$b})) 
     { 
      ${'countI'.$i.$b} = ${'countI'.$i.$b} * ${'multI'.$i.$b}; 
     } 

    } 
    //We set Analog names fir each IPLAB and get their states in the MySQL database. 
    for ($i=1; $i <= "3"; $i++) 
    { 
     ${'nomA'.$i.$b} = ${'nomA'.$i}; 
     ${'unitA'.$i.$b} = ${'unitA'.$i}; 
     $req = "SELECT * FROM states_log WHERE dev='A$i' AND mac='${'mac'.$b}' ORDER BY date_heure DESC LIMIT 1"; 
     $result2 = mysql_query($req); 
      if(!$result2) 
      { 
       die('Query failed: ' . mysql_error()); 
      } 
     $ligne = mysql_fetch_assoc($result2); 
     extract($ligne); 
     ${'stateA'.$i.$b} = $state; 
    } 
    if (debug == "1") 
    { 
     echo "${'nom'.$b}<br>"; 
     echo "MAC = ${'mac'.$b}<br>"; 
    for ($i = 1; $i <= 8; $i++) 
     { 

      echo "${'nomR'.$i.$b} = ${'stateR'.$i.$b}<br>"; 
      echo "${'nomI'.$i.$b} = ${'stateI'.$i.$b}<br>"; 
     } 
    for ($i = 1; $i <= 3; $i++) 
    { 
     echo "${'nomA'.$i.$b} = ${'stateA'.$i.$b}<br>"; 
    } 
     echo "---------------------------------------<br>"; 
    } 
    $b++; 
    } 

$time = microtime(); 
$time = explode(' ', $time); 
$time = $time[1] + $time[0]; 
$finish = $time; 
$total_time = round(($finish - $start), 4); 
if (debug == "1") 
    { 
     echo 'Page generated in '.$total_time.' seconds.'."\n"; 
    } 
mysql_close($con); 
?>

而现在的get_states_gui.php：

<?php 
    require_once('config.php'); 
    $time = microtime(); 
    $time = explode(' ', $time); 
    $time = $time[1] + $time[0]; 
    $start = $time; 
    // We create connection to the MySQL database. 
    $con = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD); 
     if(!$con) { 
      die('Failed to connect to server: ' . mysql_error()); 
     } 
    //Select database 
    $db = mysql_select_db(DB_DATABASE); 
     if(!$db) { 
      die("Unable to select database\n"); 
     } 
    $req="SELECT * FROM cartes WHERE utilisateur=$user"; 
    $result = mysql_query($req); 
     if(!$result) { 
      die('Query failed: ' . mysql_error()); 
     }  
    $nb_iplab = mysql_num_rows($result); 
    $b = "1"; 
    while ($ligne = mysql_fetch_assoc($result)) 
     { 
     extract($ligne); 
     ${'nom'.$b} = $nom; 
     ${'mac'.$b} = $mac; 
     ${'ip'.$b} = $ip; 
     for ($i=1; $i <= "8"; $i++) 
     { 
      //We set Relays names for each IPLAB and get their states in the MySQL database. 
      ${'nomR'.$i.$b} = ${'nomR'.$i}; 
      $req = "SELECT * FROM states_log WHERE dev='R$i' AND mac='${'mac'.$b}' ORDER BY date_heure DESC LIMIT 1"; 
      $result2 = mysql_query($req); 
       if(!$result2) 
       { 
        die('Query failed: ' . mysql_error()); 
       } 
      $ligne = mysql_fetch_assoc($result2); 
      extract($ligne); 
      ${'stateR'.$i.$b} = $state; 
      if (${'stateR'.$i.$b} == "1") 
      { 
       ${'img_linkR'.$i.$b} = "<a href=set_states.php?ip=${'ip'.$b}&cmd=CR$i target=empty> <img src=img/toggle_1.png height=28></a>"; 
      } 
      else if (${'stateR'.$i.$b} == "0") 
      { 
       ${'img_linkR'.$i.$b} = "<a href=set_states.php?ip=${'ip'.$b}&cmd=SR$i target=empty> <img src=img/toggle_0.png height=28></a>"; 
      } 
      else 
      { 
       ${'img_linkR'.$i.$b} = "<a href=set_states.php?ip=${'ip'.$b}&cmd=CR$i target=empty> <img src=img/LED_yellow.png height=28></a>"; 
      }    
      //We set Inputs names for each IPLAB and get their states in the MySQL database. 
      ${'nomI'.$i.$b} = ${'nomI'.$i}; 
      ${'multI'.$i.$b} = ${'multI'.$i}; 
      ${'img_onI'.$i.$b} = ${'img_onI'.$i}; 
      ${'img_offI'.$i.$b} = ${'img_offI'.$i}; 
      ${'img_naI'.$i.$b} = ${'img_naI'.$i}; 
      $req = "SELECT * FROM states_log WHERE dev='I$i' AND mac='${'mac'.$b}' ORDER BY date_heure DESC LIMIT 1"; 
      $result2 = mysql_query($req); 
       if(!$result2) 
       { 
        die('Query failed: ' . mysql_error()); 
       } 
      $ligne = mysql_fetch_assoc($result2); 
      extract($ligne); 
      ${'stateI'.$i.$b} = $state; 
      if (${'stateI'.$i.$b} == "1") 
      { 
       ${'img_linkI'.$i.$b} = "<img src=img/${'img_onI'.$i.$b} height=28>"; 
      } 
      else if (${'stateI'.$i.$b} == "0") 
      { 
       ${'img_linkI'.$i.$b} = "<img src=img/${'img_offI'.$i.$b} height=28>"; 
      } 
      else 
      { 
       ${'img_linkI'.$i.$b} = "<img src=img/${'img_naI'.$i.$b} height=28>"; 
      } 
      // We check for how many times, the Inputs has changed state to 1, and we set them as a variable for counter. 
      $req = "SELECT count(*) FROM states_log WHERE dev='I$i' AND state='1' AND mac='${'mac'.$b}'"; 
      $result2 = mysql_query($req); 
       if(!$result2) 
       { 
        die('Query failed: ' . mysql_error()); 
       } 
      list (${'countI'.$i.$b}) = mysql_fetch_row ($result2); 
      if (isset(${'multI'.$i.$b})) 
      { 
       ${'countI'.$i.$b} = ${'countI'.$i.$b} * ${'multI'.$i.$b}; 
      } 

     } 
     //We set Analog names fir each IPLAB and get their states in the MySQL database. 
     for ($i=1; $i <= "3"; $i++) 
     { 
      ${'nomA'.$i.$b} = ${'nomA'.$i}; 
      ${'unitA'.$i.$b} = ${'unitA'.$i}; 
      $req = "SELECT * FROM states_log WHERE dev='A$i' AND mac='${'mac'.$b}' ORDER BY date_heure DESC LIMIT 1"; 
      $result2 = mysql_query($req); 
       if(!$result2) 
       { 
        die('Query failed: ' . mysql_error()); 
       } 
      $ligne = mysql_fetch_assoc($result2); 
      extract($ligne); 
      ${'stateA'.$i.$b} = $state; 
     } 
     if (debug == "1") 
     { 
      echo "${'nom'.$b}<br>"; 
      echo "MAC = ${'mac'.$b}<br>"; 
     for ($i = 1; $i <= 8; $i++) 
      { 

       echo "${'nomR'.$i.$b} = ${'stateR'.$i.$b}<br>"; 
       echo "${'nomI'.$i.$b} = ${'stateI'.$i.$b}<br>"; 
      } 
     for ($i = 1; $i <= 3; $i++) 
     { 
      echo "${'nomA'.$i.$b} = ${'stateA'.$i.$b}<br>"; 
     } 
      echo "---------------------------------------<br>"; 
     } 
     $b++; 
     } 

    $time = microtime(); 
    $time = explode(' ', $time); 
    $time = $time[1] + $time[0]; 
    $finish = $time; 
    $total_time = round(($finish - $start), 4); 
    if (debug == "1") 
     { 
      echo 'Page generated in '.$total_time.' seconds.'."\n"; 
     } 
    mysql_close($con); 
    ?>

我可以给访问源中，MySQL等，如果有人能够帮助，我现在正在学习，现在我真的很喜欢它，但AJAX Jquery的事情，我完全错过了！

非常感谢！

来源

2012-01-24 Speedy2k

回答

0

你可能会更多的抽象问题...不需要PHP代码...
如果我理解你的权利，你需要发送一个特定的时间间隔Ajax reqests来获取更新的数据（js函数的setInterval（））
这是一个关于setInterval的链接：http://www.elated.com/articles/javascript-timers-with-settimeout-and-setinterval/
下面是关于Ajax链接：http://www.w3schools.com/ajax/
如果这个答案已经无关，与你的问题，请审视一下，你想你的数据做什么状态呢？在每次更新中显示它？或者什么样的更新？

来源

2012-01-24 01:54:28 Tudor

+0

[w3fools（http://w3fools.com） –

+0

@马克思乙W3cshools得到的给点权及其组织的非常好...这就是为什么我说挂...我从来没有spoted任何错误信息那里......也许有些过时......但他们仍然在努力 – Tudor

+0

是的，事实上，我对AJAX来说真的很陌生，但是从例证中学得非常快！我想要做的是以1秒的间隔执行上面的php phile并更新html页面中的所有信息。 – Speedy2k

0 
You could use javascript to trriger ajax script after 1 sec delay use setTimeout() in javascript for delay And in your php page retrieve the data and echo it.

来源

2012-01-24 13:01:01

+0

你是否愿意帮助解决这个问题，老实说，我不是一个大的JAVA程序员，而且我用例子学得很快。如果你愿意的话，我可以给webdav访问源代码。 – Speedy2k

相关问题

 相关问题