Undefined index ID

Question

aquilina 0 Newbie Poster

9 Years Ago

i have problem with my index id for class_student.php.. i not sure where it missing smth.. kindly look it for me. there is an error with index id at line 3 which mean $get_id = $_GET['id'];

<?php include ('session.php'); ?>
<?php
$get_id = $_GET['id'];
include('header.php');
$user_query = mysql_query("select * from student where student_id='$session_id'") or die(mysql_error());
$user_row = mysql_fetch_array($user_query);
?>

<?php
$query_class = mysql_query("select * from class where class_id='$get_id'") or die(mysql_error());
$row_class = mysql_fetch_array($query_class);
$teacher_id = $row_class['teacher_id'];

$teacher_query=mysql_query("select *from teacher where teacher_id='$teacher_id'")or die(mysql_error());
$teacher_row=  mysql_fetch_array($teacher_query);
?>
<body>

    <?php include('navhead_student.php'); ?>

    <div class="container">
        <div class="row-fluid">
            <div class="span3">
                <div class="hero-unit-3">
                    <div class="alert-index alert-success">
                        <i class="icon-calendar icon-large"></i>
                        <?php
                        $Today = date('y:m:d');
                        $new = date('l, F d, Y', strtotime($Today));
                        echo $new;
                        ?>
                    </div>
                </div>
                <div class="hero-unit-1">
                    <ul class="nav  nav-pills nav-stacked">
                        <li class="nav-header">Links</li>
                        <li>
                            <a href="student_home.php"><i class="icon-home icon-large"></i>&nbsp;Home
                                <div class="pull-right">
                                    <i class="icon-double-angle-right icon-large"></i>
                                </div>  
                            </a>

                        </li>
                        <li class="active">
                            <a href="student_class.php"><i class="icon-group icon-large"></i>&nbsp;Class
                                <div class="pull-right">
                                    <i class="icon-double-angle-right icon-large"></i>
                                </div>  
                            </a></li>

                    </ul>
                </div>

            </div>
            <div class="span9">

                <a href="student_class.php" class="btn btn-success"><i class="icon-arrow-left"></i>&nbsp;Back</a>
                <br><br>
                <div class="alert">Class:<a href="" >&nbsp;<strong><?php echo $row_class['course_id']; ?></strong></a>
                    &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
                    Subject:<a href="">&nbsp;<strong><?php echo $row_class['subject_id']; ?></strong></a>
                    &nbsp;
                    Teacher::<a href="">&nbsp;<strong><?php echo $teacher_row['firstname']." ".$teacher_row['lastname']; ?></strong></a>
                </div>

                <div class="hero-unit-3">
                    <table cellpadding="0" cellspacing="0" border="0" class="table table-striped table-bordered" id="example">
                        <div class="alert alert-info">
                            <button type="button" class="close" data-dismiss="alert">&times;</button>
                            <strong><i class="icon-user icon-large"></i>&nbsp;Files</strong>
                        </div>
                        <thead>
                            <tr>

                                <th>File Name</th>
                                <th>Description</th>
                                <th>Date Uploaded</th>
                                <th>Action</th>
                            </tr>
                        </thead>
                        <tbody>
                            <?php
                            $query = mysql_query("select * from files where class_id = '$get_id'") or die(mysql_error());
                            while ($row = mysql_fetch_array($query)) {
                                $file_id = $row['file_id'];
                                ?>
                                <tr class="odd gradeX">

                                    <!-- script -->
                            <script type="text/javascript">
                                $(document).ready(function(){

                                    $('#d<?php echo $file_id; ?>').tooltip('show')
                                    $('#d<?php echo $file_id; ?>').tooltip('hide')
                                });
                            </script>
                            <!-- end script -->

                            <td><?php echo $row['fname'] ?></td>
                            <td><?php echo $row['fdesc']; ?></td> 
                            <td><?php echo $row['fdatein']; ?></td>
                            <td width="50">
                                <a href="<?php echo $row['floc']; ?>" rel="tooltip"  title="Download File" id="d<?php echo $file_id; ?>"  role="button"  data-toggle="modal" class="btn btn-info"><i class="icon-download-alt icon-large"></i></a>

                            </td>


                            </tr>
                        <?php } ?>
                        </tbody>
                    </table>
                    <!-- end slider -->
                </div>
            </div>

        </div>
        <?php include('footer.php'); ?>
    </div>
</div>
</div>

</body>
</html>

php

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2 Replies
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1 Hour Discussion Span
Latest Post 9 Years Ago Latest Post by aquilina

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diafol

9 Years Ago

You're assigning $get_id as though $_GET['id'] is always set. This may not be true.

A check could be made...

//include any common stuff
if(isset($_GET['id']))
{
    $get_id = $_GET['id];
    //include any code that depends on $get_id or on $_GET['id'] being set here
}else{
    //include anything that depends upon $_GET['id'] not being set
}
//include any common stuff

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aquilina 0 Newbie Poster · Answer 1 · 2014-05-24T20:20:14+00:00

before that can take a look the student_class.php.. this page linked with the class_student.php..

<?php include ('session.php'); ?>
<?php
include('header.php');
$user_query = mysql_query("select * from student where student_id='$session_id'") or die(mysql_error());
$user_row = mysql_fetch_array($user_query);
?>
<body>

    <?php include('navhead_student.php'); ?>

    <div class="container">
        <div class="row-fluid">
            <div class="span3">
                <div class="hero-unit-3">
                    <div class="alert-index alert-success">
                        <i class="icon-calendar icon-large"></i>
                        <?php
                        $Today = date('y:m:d');
                        $new = date('l, F d, Y', strtotime($Today));
                        echo $new;
                        ?>
                    </div>
                </div>
                <div class="hero-unit-1">
                    <ul class="nav  nav-pills nav-stacked">
                        <li class="nav-header">Links</li>
                        <li>
                            <a href="student_home.php"><i class="icon-home icon-large"></i>&nbsp;Home
                                <div class="pull-right">
                                    <i class="icon-double-angle-right icon-large"></i>
                                </div>  
                            </a>

                        </li>
                        <li class="active">
                            <a href="student_class.php"><i class="icon-group icon-large"></i>&nbsp;Class
                                <div class="pull-right">
                                    <i class="icon-double-angle-right icon-large"></i>
                                </div>  
                            </a></li>

                    </ul>
                </div>

            </div>
            <div class="span9">

                <div class="hero-unit-3">
                    <table cellpadding="0" cellspacing="0" border="0" class="table table-striped table-bordered" id="example">
                        <div class="alert alert-info">
                            <button type="button" class="close" data-dismiss="alert">&times;</button>
                            <strong><i class="icon-user icon-large"></i>&nbsp;My Classes</strong>
                        </div>
                        <thead>
                            <tr>

                                <th>Class</th>
                                <th>Subject</th>
                                <th>Teacher</th>
                            </tr>
                        </thead>
                        <tbody>

                            <?php
                            $query = mysql_query("select * from sws where  student_id='$session_id'") or die(mysql_error());
                            while ($row = mysql_fetch_array($query)) {
                                $class_id = $row['class_id'];
                                $teacher_id = $row['teacher_id'];

                                $teacher_query = mysql_query("select * from teacher where teacher_id='$teacher_id'") or die(mysql_error());
                                $teacher_row = mysql_fetch_array($teacher_query);
                                ?>
                                <tr class="odd gradeX">


                                    <td><?php echo $row['cys']; ?></td>
                                    <td><a rel="tooltip"  title="View Class" id="v<?php echo $class_id; ?>"  href="class_student.php<?php echo '?id=' . $class_id; ?>" class="btn btn-info">&nbsp;<i class="icon-file-alt icon-large"></i>&nbsp;<?php echo $row['subject_id']; ?></a></td> 
                                    <td><?php echo $teacher_row['firstname'] . " " . $teacher_row['lastname']; ?></td>   


                                </tr>
<?php } ?>
                        </tbody>
                    </table>
                    <!-- end slider -->
                </div>
            </div>

        </div>
<?php include('footer.php'); ?>
    </div>
</div>
</div>
</body>
</html>

Undefined index ID

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