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in Technique[技术] by (71.8m points)

mysql - PHP Edit Post with Google OpenID

I'm trying to code an edit post page for my site which posts to itself using a google openid logon, however i just get a blank page, instead of the edit form. Here's the code i'm using:

<html>
  <head>
    <title>BQuotes</title>
    <!-- <meta name="viewport" content="width=device-width, initial-scale=1"> -->
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
    <link href="votingfiles/voting.css" rel="stylesheet" type="text/css" />
    <script src="votingfiles/voting.js" type="text/javascript"></script>
    <link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.2/jquery.mobile-1.4.2.min.css" />
    <link rel="stylesheet" type="text/css" href="http://bquotes.me/mystyle-a.css">
    <script src="http://code.jquery.com/jquery-1.10.0.min.js"></script>
    <script src="http://code.jquery.com/mobile/1.4.2/jquery.mobile-1.4.2.min.js"></script>
    <style>
      .head_text {
        color: #ffffff;
      }
      a {
        text-decoration: none;
      }
    </style>

    <script type="text/javascript">
      $('#g-login').bind('click', function (event) {
        // event.preventDefault();
        // $('#form-id').attr('action', 'google-login.php').trigger('submit');
        alert("Clicked");
      });
    </script>
  </head>
  <body style="color:#d4ffaa">


    <!-- BQ Edit Post Start -->
    <div data-role="page" id="editPost">
      <div data-role="header" style="background-color:#5FBF00">
        <h1 class="head_text">BQuotes: Edit Statuses</h1>
      </div>
      <div data-role="main" class="ui-content">

        <?php





          ?>


      </div>



         <?php
          define ('HOSTNAME', 'host');
          define ('USERNAME', 'user');
          define ('PASSWORD', 'pass');
          define ('DATABASE_NAME', 'db');

          $db = mysql_connect(HOSTNAME, USERNAME, PASSWORD) or die ('I cannot connect to MySQL.');

          mysql_select_db(DATABASE_NAME);

          $tbl='table';
          $id=$_POST['pid'];

          $query="SELECT * from $tbl WHERE $id=id";
          $result = mysql_query($query);

          while($row = mysql_fetch_array($result)) {
          $id=$row['id'];
          $username=$row['username'];
          $message=$row['message'];
          $tag=$row['tag'];



         session_start();
              if($_SESSION['myusername'] != null &&  isset($_SESSION['myusername'])){
              echo "<form action='logout.php' method='post' id ='form-logout' data-ajax='false'>
                    <br/><input type='submit' value='Logout'/>";
              echo "</form>";
              echo "<div style='margin-left:20px;'>Logged In As:  ".$_SESSION['myusername']."</div>";

             echo "<form name='post-edit' action='' method='post'>";
             echo "<input type='hidden' name='id' value=".$row['id'].">";
             echo "<input type='hidden' name='username' value=".$row['username'].">";
             echo "<textarea name='message' value=".$row['message'].">";
             echo "<input type='text' name='tag' value=".$row['tag'].">";
             echo "<input type='submit' name='submit' value='Edit!'>";
             echo "</form>";

              }
            else if($_SESSION['myusername'] == null){
              echo "<form action='google-login.php?login=true' method='post' id ='form-id' data-ajax='false'>";    
                 echo "<span class='loginreq'>Login to Edit</span>";           
                echo "<br/><input type='submit' value='Login with Google'/>";
                echo "</form>";
            }
            }



          if (isset($_POST['submit'])) {

          $query = "UPDATE mybq_post_txt_main SET message=$message, tag=$tag WHERE id=$id ";

          $result = mysql_query($query);

          while ($row = mysql_fetch_array($result)) {

          echo "Your post has been edited to:";<br>
          echo $row['message'];
          echo $row['tag'];
          }

          mysql_free_result($result);
          mysql_close();

          }

        ?>



        <a href='mybq-index.php'>Home</a>


      </div>


  </body>
</html>

Any help will be appreciated. (never mind the PHP SQL statements, I will convert them to PDO later).

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by (71.8m points)
$query="SELECT * from $tbl WHERE $id=id";

Should be

$query="SELECT * from $tbl WHERE id=$id";

(i.e. flip around the "id" to put the SQL column first and your PHP variable second)

Not sure if that will fix everything, but that was the first thing that jumped out at me.


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