我找到了第一部分并试图对其进行扩展，但是代码无法正常工作。我有一个索引部分和一个创建部分，但是当我在代码中按“提交”时，没有任何提交。两者看起来一样，不知道为什么这行不通。我使用xampp设置了一个数据库，它与原始代码完美配合
在原始代码中，当我按“提交”时，数据将存储在数据库中，并且用户将被带回到索引页，在我的代码中，表格将重置，并且数据不会存储。我没有收到错误消息。
这是原始代码：
索引部分；
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<link href="css/bootstrap.min.css" rel="stylesheet">
<script src="js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div class="row">
<h3>PHP CRUD Grid</h3>
</div>
<div class="row">
<p>
<a href="create.php" class="btn btn-success">Create</a>
</p>
<table class="table table-striped table-bordered">
<thead>
<tr>
<th>Name</th>
<th>Email Address</th>
<th>Mobile Number</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<?php
include 'database.php';
$pdo = Database::connect();
$sql = 'SELECT * FROM customers ORDER BY id DESC';
foreach ($pdo->query($sql) as $row) {
echo '<tr>';
echo '<td>'. $row['name'] . '</td>';
echo '<td>'. $row['email'] . '</td>';
echo '<td>'. $row['mobile'] . '</td>';
echo '<td width=250>';
echo '<a class="btn" href="read.php?id='.$row['id'].'">Read</a>';
echo ' ';
echo '<a class="btn btn-success" href="update.php?id='.$row['id'].'">Update</a>';
echo ' ';
echo '<a class="btn btn-danger" href="delete.php?id='.$row['id'].'">Delete</a>';
echo '</td>';
echo '</tr>';
}
Database::disconnect();
?>
</tbody>
</table>
</div>
</div> <!-- /container -->
</body>
</html>
创建部分：
<?php
require 'database.php';
if ( !empty($_POST)) {
// keep track validation errors
// $nameError = null;
$emailError = null;
$mobileError = null;
// keep track post values
$name = $_POST['name'];
$email = $_POST['email'];
$mobile = $_POST['mobile'];
// validate input
$valid = true;
/*if (empty($name)) {
$nameError = 'Please enter Name';
$valid = false;
}*/
if (empty($email)) {
$emailError = 'Please enter Email Address';
$valid = false;
} else if ( !filter_var($email,FILTER_VALIDATE_EMAIL) ) {
$emailError = 'Please enter a valid Email Address';
$valid = false;
}
if (empty($mobile)) {
$mobileError = 'Please enter Mobile Number';
$valid = false;
}
// insert data
if ($valid) {
$pdo = Database::connect();
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$sql = "INSERT INTO customers (name,email,mobile) values(?, ?, ?)";
$q = $pdo->prepare($sql);
$q->execute(array($name,$email,$mobile));
Database::disconnect();
header("Location: index.php");
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<link href="css/bootstrap.min.css" rel="stylesheet">
<script src="js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div class="span10 offset1">
<div class="row">
<h3>Create a Customer</h3>
</div>
<form class="form-horizontal" action="create.php" method="post">
<div class="control-group <?php echo !empty($nameError)?'error':'';?>">
<label class="control-label">Name</label>
<div class="controls">
<input name="name" type="text" placeholder="Name" value="<?php echo !empty($name)?$name:'';?>">
<?php if (!empty($nameError)): ?>
<span class="help-inline"><?php echo $nameError;?></span>
<?php endif; ?>
</div>
</div>
<div class="control-group <?php echo !empty($emailError)?'error':'';?>">
<label class="control-label">Email Address</label>
<div class="controls">
<input name="email" type="text" placeholder="Email Address" value="<?php echo !empty($email)?$email:'';?>">
<?php if (!empty($emailError)): ?>
<span class="help-inline"><?php echo $emailError;?></span>
<?php endif;?>
</div>
</div>
<div class="control-group <?php echo !empty($mobileError)?'error':'';?>">
<label class="control-label">Mobile Number</label>
<div class="controls">
<input name="mobile" type="text" placeholder="Mobile Number" value="<?php echo !empty($mobile)?$mobile:'';?>">
<?php if (!empty($mobileError)): ?>
<span class="help-inline"><?php echo $mobileError;?></span>
<?php endif;?>
</div>
</div>
<div class="form-actions">
<button type="submit" class="btn btn-success">Create</button>
<a class="btn" href="index.php">Back</a>
</div>
</form>
</div>
</div> <!-- /container -->
</body>
</html>
这就是我做的：
索引部分；
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<link href="css/bootstrap.min.css" rel="stylesheet">
<script src="js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div class="row">
<h3>PHP CRUD Grid</h3>
</div>
<div class="row">
<p>
<a href="create.php" class="btn btn-success">Create</a>
</p>
<table class="table table-striped table-bordered">
<thead>
<tr>
<th>titel</th>
<th>prog</th>
<th>tekst</th>
<th>alt1</th>
<th>res1</th>
<th>alt2</th>
<th>res2</th>
<th>alt3</th>
<th>res3</th>
<th>alt4</th>
<th>res4</th>
</tr>
</thead>
<tbody>
<?php
include 'database.php';
$pdo = Database::connect();
$sql = 'SELECT * FROM sider ORDER BY id DESC';
foreach ($pdo->query($sql) as $row) {
echo '<tr>';
echo '<td>'. $row['titel'] . '</td>';
echo '<td>'. $row['progresjon'] . '</td>';
echo '<td>'. $row['tekst'] . '</td>';
echo '<td>'. $row['alt1'] . '</td>';
echo '<td>'. $row['res1'] . '</td>';
echo '<td>'. $row['alt2'] . '</td>';
echo '<td>'. $row['res2'] . '</td>';
echo '<td>'. $row['alt3'] . '</td>';
echo '<td>'. $row['res3'] . '</td>';
echo '<td>'. $row['alt4'] . '</td>';
echo '<td>'. $row['res4'] . '</td>';
echo '<td width=250>';
echo '<a class="btn" href="read.php?id='.$row['id'].'">Read</a>';
echo ' ';
echo '<a class="btn btn-success" href="update.php?id='.$row['id'].'">Update</a>';
echo ' ';
echo '<a class="btn btn-danger" href="delete.php?id='.$row['id'].'">Delete</a>';
echo '</td>';
echo '</tr>';
}
Database::disconnect();
?>
</tbody>
</table>
</div>
</div> <!-- /container -->
</body>
</html>
创建零件：
<?php
require 'database.php';
if ( !empty($_POST)) {
// keep track validation errors
$titelError = null;
$progresjonError = null;
$tekstError = null;
// keep track post values
$titel = $_POST['titel'];
$progresjon = $_POST['progresjon'];
$tekst = $_POST['tekst'];
$alt1 = $_POST['alt1'];
$res1 = $_POST['res1'];
$alt2 = $_POST['alt2'];
$res2 = $_POST['res2'];
$alt3 = $_POST['alt3'];
$res3 = $_POST['res3'];
$alt4 = $_POST['alt4'];
$res4 = $_POST['res4'];
// validate input
$valid = true;
if (empty($titel)) {
$titelError = 'Please enter titel';
$valid = false;
}
if (empty($progresjon)) {
$progresjonError = 'Please enter progresjon';
$valid = false;
}
if (empty($tekst)) {
$tekstError = 'Please enter tekst';
$valid = false;
}
// insert data
if ($valid) {
$pdo = Database::connect();
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$sql = "INSERT INTO sider (titel,progresjon,tekst,alt1,res1,alt2,res2,alt3,res3,alt4,res4) values (?,?,?,?,?,?,?,?,?,?,?)";
$q = $pdo->prepare($sql);
$q->execute(array($titel,$progresjon,$tekst,$alt1,$res1,$alt2,$res2,$alt3,$res3,$alt4,$res4));
Database::disconnect();
header("Location: index.php");
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<link href="css/bootstrap.min.css" rel="stylesheet">
<script src="js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div class="span10 offset1">
<div class="row">
<h3>Create a Customer</h3>
</div>
<form class="form-horizontal" action="create.php" method="post">
<div class="control-group <?php echo !empty($titelError)?'error':'';?>">
<label class="control-label">titel</label>
<div class="controls">
<input titel="titel" type="text" placeholder="titel" value="<?php echo !empty($titel)?$titel:'';?>">
<?php if (!empty($titelError)): ?>
<span class="help-inline"><?php echo $titelError;?></span>
<?php endif; ?>
</div>
</div>
<div class="control-group <?php echo !empty($progError)?'error':'';?>">
<label class="control-label">prog Address</label>
<div class="controls">
<input titel="progresjon" type="text" placeholder="progresjon" value="<?php echo !empty($progresjon)?$progresjon:'';?>">
<?php if (!empty($progresjonError)): ?>
<span class="help-inline"><?php echo $progresjonError;?></span>
<?php endif;?>
</div>
</div>
<div class="control-group <?php echo !empty($tekstError)?'error':'';?>">
<label class="control-label">tekst </label>
<div class="controls">
<input titel="tekst" type="text" placeholder="tekst Number" value="<?php echo !empty($tekst)?$tekst:'';?>">
<?php if (!empty($tekstError)): ?>
<span class="help-inline"><?php echo $tekstError;?></span>
<?php endif;?>
</div>
</div>
<div class="control-group">
<label class="control-label">alt1</label>
<div class="controls">
<input titel="alt1" type="text" placeholder="Alt1" value="<?php echo !empty($alt1)?$alt1:'';?>" </div>
</div>
</div>
<div class="control-group">
<label class="control-label">res1</label>
<div class="controls">
<input titel="res1" type="text" placeholder="res1" value="<?php echo !empty($res1)?$res1:'';?>" </div>
</div>
</div>
<div class="control-group">
<label class="control-label">alt2</label>
<div class="controls">
<input titel="al1" type="text" placeholder="Alt2" value="<?php echo !empty($alt2)?$alt2:'';?>" </div>
</div>
</div>
<div class="control-group">
<label class="control-label">res2</label>
<div class="controls">
<input titel="res2" type="text" placeholder="res2" value="<?php echo !empty($res2)?$res2:'';?>" </div>
</div>
</div>
<div class="control-group">
<label class="control-label">alt3</label>
<div class="controls">
<input titel="al3" type="text" placeholder="Alt3" value="<?php echo !empty($alt3)?$alt3:'';?>" </div>
</div>
</div>
<div class="control-group">
<label class="control-label">res3</label>
<div class="controls">
<input titel="res3" type="text" placeholder="res3" value="<?php echo !empty($res3)?$res3:'';?>" </div>
</div>
</div>
<div class="control-group">
<label class="control-label">alt4</label>
<div class="controls">
<input titel="alt4" type="text" placeholder="Alt4" value="<?php echo !empty($alt4)?$alt4:'';?>" </div>
</div>
</div>
<div class="control-group">
<label class="control-label">res4</label>
<div class="controls">
<input titel="res4" type="text" placeholder="res4" value="<?php echo !empty($res4)?$res4:'';?>" </div>
</div>
</div>
<div class="form-actions">
<button type="submit" class="btn btn-success">Create</button>
<a class="btn" href="index.php">Back</a>
</div>
</form>
</div>
</div>
<!-- /container -->
</body>
</html>
答案 0 :(得分：1)
如果仔细查看表单和示例之间的差异，您会发现<input字段都不具有“ name”属性。如果您希望服务器接收该值，则在HTML表单输入字段中是必需的-在发送HTTP请求时，它将用作参数名称，然后在PHP中，该名称将与匹配的值一起添加到$ _POST数组中相关。
例如，您需要更改
<input titel="titel" type="text" placeholder="titel" value="<?php echo !empty($titel)?$titel:'';?>">
到
<input name="titel" titel="titel" type="text" placeholder="titel" value="<?php echo !empty($titel)?$titel:'';?>">
，并且对于所有其他字段也是如此，请确保您在“ name”属性中输入的内容与您的PHP代码所期望的相符（例如，在本示例中为$_POST["titel"]）。
如果您想做进一步的研究，大多数HTML表单教程都会解释这个概念。