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php + jquery chat

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  1. <?php
  2. if($_SERVER['REQUEST_METHOD'] == 'POST')
  3. {
  4.     header("Content-Type: text/html; charset=utf-8");
  5.     session_start();
  6.     require_once("functions.php");
  7.     if ($_POST['action']=='update')
  8.     {
  9.         $result = $slaattene_db->query("SELECT * FROM chat ORDER BY time DESC LIMIT 10");
  10.         $return = '<table>';
  11.         while ($row = $result->fetch_assoc())
  12.         {
  13.             $message[]=$row;
  14.         }
  15.         $message=array_reverse($message);
  16.         foreach($message as $msg)
  17.         {
  18.             if(substr($msg['message'], 0, 4 ) === "http" || substr( $msg['message'], 0, 3 ) === "www") // <a href="www.google.com">google.com</a>
  19.             {
  20.                 $return .= '<tr><td><font color="#32cd32">' . substr($msg['time'], -8) . '</font></td><td><strong>' . $msg['handle'] . ':</strong></td><td> <a href="'.$msg['message'].'">'.$msg['message'].'</a></td></tr>';
  21.             }
  22.             else
  23.             {
  24.                 $return .= '<tr><td><font color="#32cd32">' . substr($msg['time'], -8) . '</font></td><td><strong>' . $msg['handle'] . ':</strong></td><td> ' . $msg['message'] . '</td></tr>';
  25.             }
  26.         }
  27.         $return .= '</table>';
  28.         die($return);
  29.     }
  30.     if ($_POST['action']=='send')
  31.     {
  32.         $time = date("Y-m-d H:i:s");
  33.         $handle=$_POST['handle'];
  34.         $message=$_POST['message'];
  35.         $slaattene_db->query("INSERT INTO chat (handle, message, time) VALUES ('$handle','$message','$time')");
  36.         die();
  37.     }
  38.     if ($_POST['action']=='updateusers')
  39.     {
  40.         $handle=$_POST['handle'];
  41.         $activeUsers=$slaattene_db->query("SELECT * FROM chat_current_users WHERE lastseen > NOW() - INTERVAL 2 MINUTE");
  42.         $time = date("Y-m-d H:i:s");
  43.         $slaattene_db->query("UPDATE chat_current_users SET lastseen='$time' WHERE handle='$handle'");
  44.         $return='<table><tr><strong>Online:</strong></tr>';
  45.         while($row=$activeUsers->fetch_assoc())
  46.         {
  47.             $return.='<tr><td>'.$row['handle'].'</td></tr>';
  48.         }
  49.         $return.='</table>';
  50.         die($return);
  51.     }
  52.     if($_POST['action']=='sethandle')
  53.     {
  54.         $handle=$_POST['handle'];
  55.         $checkHandle=$slaattene_db->query("SELECT * FROM chat_current_users WHERE handle='$handle'");
  56.         if($checkHandle->num_rows == 0)
  57.         {
  58.             $time = date("Y-m-d H:i:s");
  59.             $slaattene_db->query("INSERT INTO chat_current_users (handle, lastseen) VALUES ('$handle','$time')");
  60.         }
  61.         else
  62.         {
  63.             $slaattene_db->query("UPDATE chat_current_users SET lastseen='$time' WHERE handle='$handle'");
  64.         }
  65.     }
  66.     die();
  67. }
  68. echo '<head><script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script></head>';
  69.  
  70. if (!isset($_GET['p']))
  71. {
  72. echo '
  73. <table width=1024>
  74.         <tr>
  75.             <td width=800><div id=chatwindow style="margin: 10px 0 10px 0;"></div></td><td valign="top"><div id=showusers style="margin: 10px 0 10px 0;"></div></td></tr>
  76.         <tr>
  77.             <td><input type="text" id="message" size=50 placeholder="message">
  78.             <input type="button" value="Send" onclick="send_message();" />
  79.             </td><td><input type="text" name="handle" id="handle" placeholder="Type a name"><input type="button" value="Set" onclick="set_handle();" /></td>
  80.             </td>
  81.             <td>
  82.             </td>
  83.         </tr>
  84. </table>
  85.     <script>
  86.     function update_chat() {
  87.         $.post("index.php", {
  88.                 action:"update"
  89.             },
  90.             function(data) {
  91.                 $("#chatwindow").html(data);
  92.             }
  93.         );
  94.     }
  95.     function update_users() {
  96.         $.post("index.php", {
  97.                 action:"updateusers",
  98.                 handle:$("#handle").val()
  99.             },
  100.             function(data) {
  101.                 $("#showusers").html(data);
  102.             }
  103.         );
  104.     }
  105.     function set_handle()
  106.     {
  107.         $.post("index.php", {
  108.                 action:"sethandle",
  109.                 handle:$("#handle").val()
  110.             },
  111.             function(data) {
  112.                 $("#showusers").html(data);
  113.             }
  114.         );
  115.     }
  116.     function send_message() {
  117.         if($("#handle").val())
  118.         {
  119.             $.post("index.php", {
  120.                     action:"send",
  121.                     handle:$("#handle").val(),
  122.                     message:$("#message").val()
  123.                 },
  124.                 function(data) {
  125.                     $("#message").val("");
  126.                     update_chat();
  127.                 }
  128.             );
  129.         }
  130.         else
  131.         {
  132.             alert("You need a handle before chatting!");
  133.         }
  134.     }
  135.     $("#message").keydown(function(e){
  136.         if (e.keyCode == 13)
  137.         {
  138.             send_message();
  139.         }
  140.     });
  141.     setInterval(function(){
  142.         update_chat();
  143.         update_users();
  144.     }, 3500);
  145.     </script>';
  146. }
  147. ?>

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