【发布时间】：2019-05-05 13:20:28
【问题描述】：
我的 php 中有一个表，其中显示了 mysql 的“用户”表中的数据。在表格中，我添加了一个编辑按钮，因此，如果您单击该按钮，表格下方会显示一个表单，您可以在其中编辑表格内容的某些字段，我还在其旁边添加了一个删除按钮以删除该行您想要的表格，但该按钮可以正常工作。
我遇到的问题是编辑按钮，当按下该按钮时，它不会显示我在表格下方添加的表单，但它会将我带到页面“registerTeacher.php?edit = 3”例子。按下“编辑”按钮，它应该显示可以编辑的表单，但它没有做任何事情，也没有显示任何错误。有人可以帮我找出问题所在吗？谢谢。
这是我的“indexAdmin.php”代码：
<?php
include('server.php');
include('Security.php');
include('Conexion.php');
include('registerTeacher.php');
?>
<?php
$style = "style='display:none;'";
if (isset($_GET['edit'])) {
$id = $_GET['edit'];
$update = true;
$record = mysqli_query($conn, "SELECT * FROM users WHERE id=$id");
if (@count($record) == 1 ) {
$n = mysqli_fetch_array($record);
$username = $n['username'];
$email = $n['email'];
$style = "style='display:block;'";
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" type="text/css" href="styleIndexAdmin.css">
<meta charset="utf-8">
</head>
<body>
<!-- notification message -->
<?php if (isset($_SESSION['success'])) : ?>
<div class="error success" >
<h3>
<?php
echo $_SESSION['success'];
unset($_SESSION['success']);
?>
</h3>
</div>
<?php endif ?>
<!-- logged in user information -->
<?php if (isset($_SESSION['username'])) : ?>
<div class="navbar" id="navbar">
<a class="tablink" onclick="openPage('professorsRegistered', this, 'lightblue')" id="defaultOpen">Profesores</a>
</div>
<!----------- PROFESSROS REGISTERED TABLE ----------->
<div id="professorsRegistered" class="tabcontent"></br><br>
<table class="professorsRegistered">
<tr>
<th colspan="3"><h2>PROFESSORS REGISTERED</h2></th>
</tr>
<tr>
<th> Name </th>
<th> Edit </th>
<th> Delete </th>
</tr>
<?php
$result = $conn->query($sql);
$sql = "SELECT * FROM users WHERE rol='profesor'";
$result = $conn->query($sql);
if ($result->num_rows==0){
echo 'No professors';
}else{
while($row = $result->fetch_assoc()) {
echo "<tr>
<td>".$row["username"]."</td>
<td><a href='registerTeacher.php?edit=".$row["id"]."' class='edit_btn' ><i class='fa fa-pencil-square-o' style='cursor:pointer;'></i></a></td>
<td><a class='eliminate' onClick=\"javascript: return confirm('Confirm to delete');\" href=\"deleteTeacher.php?id=".$row['id']."\">X</a></td>
</tr>";
}
}
?>
</table><br><br>
<!------- FORM TO EDIT REGISTERED TEACHERS ---------->
<form method="post" action="registerTeacher.php" <?php echo $style;?>>
<!----- newly added field--->
<input type="hidden" name="id" value="<?php echo $id; ?>">
<div class="input-group">
<label>USER</label>
<input type="text" name="username" value="<?php echo $username; ?>">
</div>
<div class="input-group">
<label>EMAIL</label>
<input type="email" name="email" value="<?php echo $email; ?>">
</div>
<div class="input-group">
<!--------BUTTON----->
<?php if ($update == true): ?>
<button class="btn_update" type="submit" name="update">EDIT</button>
<?php endif ?>
</div>
</form>
</div>
<?php endif ?>
<script>
function getUrlVars(){
var vars = {};
var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value){
vars[key] =value;
});
return vars;
}
function openPage(pageName,elmnt,color) {
var i, tabcontent, tablinks;
tabcontent = document.getElementsByClassName("tabcontent");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "none";
}
tablinks = document.getElementsByClassName("tablink");
for (i = 0; i < tablinks.length; i++) {
tablinks[i].style.backgroundColor = "";
}
document.getElementById(pageName).style.display = "block";
elmnt.style.backgroundColor = color;
}
p = getUrlVars()["page"];
//alert(p);
if (p==undefined){
document.getElementById("defaultOpen").click();
}else{
openPage(p, this, 'lightblue');
}
</script>
</body>
<?php if (isset($_SESSION['message'])): ?>
<div class="msg">
<?php
echo $_SESSION['message'];
unset($_SESSION['message']);
?>
</div>
<?php endif ?>
</html>
这是我的“registerTeacher.php”文件：
<?php
include('Conexion.php');
$username = "";
$email = "";
$errors = array();
$id = 0;
$update = false;
// UPDATE
if (isset($_POST['update'])) {
$id = $_POST['id'];
$username = $_POST['username'];
$email = $_POST['email'];
mysqli_query($conn, "UPDATE users SET username='$username', email='$email' WHERE id=$id");
$_SESSION['message'] = "User edited!";
header("Location: indexAdmin.php?page=professors");
}
?>
【问题讨论】：