我在PHP中有这个错误，由下面的变量给我这个错误未定义的变量 [英] I have this error in PHP where by the below variables are giving me this error undefined variables
本文介绍了我在PHP中有这个错误，由下面的变量给我这个错误未定义的变量的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
Notice: Undefined variable: item_id in C:\xampp\htdocs\sites\admin_panel\student_center_system\controller\admin\editmaster.php on line 100
readonly>
Notice: Undefined variable: item_name in C:\xampp\htdocs\sites\admin_panel\student_center_system\controller\admin\editmaster.php on line 101
>
Notice: Undefined variable: description in C:\xampp\htdocs\sites\admin_panel\student_center_system\controller\admin\editmaster.php on line 102
>
Notice: Undefined variable: item_category in C:\xampp\htdocs\sites\admin_panel\student_center_system\controller\admin\editmaster.php on line 103
>
Notice: Undefined variable: pic in C:\xampp\htdocs\sites\admin_panel\student_center_system\controller\admin\editmaster.php on line 104
>
这个viewitems.php
this viewitems.php
<?php
include "navigation.php";
include "header.php";
include "footer.php";
?>
<?php
include("../dbConfig.php");
$query = "SELECT item_id,item_name,description,item_category,pic FROM lost_items_table";
$returnD = mysql_query($query);
$returnD1 = mysql_query($query);
$result = mysql_fetch_assoc($returnD);
?>
<!-- Page Content -->
<div id="page-wrapper">
<div class="container-fluid">
<div class="row">
<div class="col-lg-12">
<h1 class="page-header">View Items</h1>
<div class="row">
<div class="col-lg-12">
<div class="panel panel-default">
<div class="panel-heading">View Items</div>
<table width="100%" class="table table-striped table-bordered table-hover" id="dataTables-example">
<tr>
<th>Item Id</th>
<th>Item Name</th>
<th>Description</th>
<th>Item category</th>
<th>Picture</th>
<th>Edit</th>
<th>Delete</th>
</tr>
<?php
while($result1 = mysql_fetch_assoc($returnD1)){
?>
<tr>
<td>
<a href="adminPage.php?activity=itemdetails&item_name=<?php echo $result1['item_name']; ?>"> <?php echo $result1['item_id']; ?> </a>
</td>
<td><?php echo ucfirst($result1['item_name']); ?></td>
<td><?php echo ucfirst($result1['description']); ?></td>
<td><?php echo ucfirst($result1['item_category']); ?></td>
<td><?php echo ucfirst($result1['pic']); ?></td>
<td>
<a href="editmaster.php?item_id=<?php echo $row["item_id"]; ?>">Edit</a>
</td>
<td>
<a href="adminPage.php?activity=deleteitem&item_name=<?php echo $result1['item_name']; ?>">Delete</a>
</td>
</tr>
<?php
}
?>
</table>
<!-- /.table-responsive -->
</div>
</div>
<!-- /.panel -->
</div>
<!-- /.col-lg-12 -->
</div>
</div>
<!-- /.col-lg-12 -->
</div>
<!-- /.row -->
</div>
<!-- /.container-fluid -->
</div>
<!-- /#page-wrapper -->
我尝试过：
这是我的editmaster.php
What I have tried:
this my editmaster.php
<?php session_start();
include("../dbConfig.php");
include "navigation.php";
include "header.php";
include "footer.php";
{
}
if (isset($_POST['updateitem']))
{
if (is_numeric($_POST['item_id']))
{
$item_id = $_POST['item_id'];
$item_name = mysql_real_escape_string(htmlspecialchars($_POST['item_name']));
$description = mysql_real_escape_string(htmlspecialchars($_POST['description']));
$item_category = mysql_real_escape_string(htmlspecialchars($_POST['item_category']));
$pic = mysql_real_escape_string(htmlspecialchars($_POST['pic']));
if ($item_name == '' || $description == '' || $item_category == '' || $pic == '')
{
$error = 'ERROR: Please fill in all required fields!';
valid($item_id, $item_name, $description, $item_category, $pic, $error);
}
else
{
mysql_query("UPDATE lost_items_table SET item_name = '$item_name', description = '$description', item_category = '$item_category', pic = '$pic' WHERE item_id = '$item_id'")
or die(mysql_error());
header("Location: viewitems.php");
}
}
else
{
echo 'Error!';
}
}
else
{
if (isset($_GET['item_id']) && is_numeric($_GET['item_id']) && $_GET['item_id'] > 0)
{
$item_id = $_GET['item_id'];
$result = mysql_query("SELECT * FROM lost_items_table WHERE item_id=$item_id")
or die(mysql_error());
$row = mysql_fetch_array($result);
if($row)
{
$item_name = $row['item_name'];
$description = $row['description'];
$item_category = $row['item_category'];
$pic = $row['pic'];
valid($item_id, $item_name, $description, $item_category, $pic,'');
}
else
{
echo "No results!";
}
}
else
{
echo 'Error!';
}
}
?>
<!-- Page Content -->
<div id="page-wrapper">
<div class="container-fluid">
<!-- /.row -->
<div class="row">
<!--div class="col-md-8 col-md-offset-4"-->
<div class="col-lg-6">
<div class="Register-panel panel panel-default">
<!--div class="panel panel-default"-->
<div class="panel-heading">
Edit Item
</div>
<div class="panel-body">
<div class="row">
<div class="col-lg-6">
<div class="panel-body">
<form role="form" action="">
<input type="text" name="item_id" value=<?php echo $item_id; ?> readonly><br>
<input type="text" name="item_name" required autofocus placeholder="Item-Name" value=<?php echo $item_name; ?>><br>
<input type="text" name="description" required autofocus placeholder="Description" value=<?php echo $description; ?>><br>
<input type="text" name="item_category" required autofocus placeholder="Item_category" value=<?php echo $item_category; ?>><br>
<input type="text" name="pic" required autofocus placeholder="pic" value=<?php echo $pic; ?>><br>
<input type="submit" name="updateitemBtn" value="Update">
</form>
</div>
</div>
<!-- /.col-lg-6 (nested) -->
</div>
<!-- /.row (nested) -->
</div>
<!-- /.panel-body -->
</div>
<!-- /.panel -->
</div>
<!-- /.col-lg-12 -->
</div>
<!-- /.row -->
</div>
<!-- /.container-fluid -->
</div>
<!-- /#page-wrapper -->
推荐答案
query =SELECT item_id，item_name， description，item_category，pic FROM lost_items_table;
query = "SELECT item_id,item_name,description,item_category,pic FROM lost_items_table";
returnD = mysql_query（
returnD = mysql_query(
query）;
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