我为朋友制作了一个网站，基本上我有15个可编辑的字段，具体取决于用户类型。基本上我的代码是回显到该字段的行，但是当我去更改它并更新数据库时没有任何反应。我没有收到任何错误消息，因此我认为这与我的条件陈述有关。我的功能很好，我的查询似乎并不像我一样。
<?php
//end of function
}
// connect to the database
$server = 'localhost';
$user = 'root';
$pass = '';
$database = 'bubbles';
//Connect to the database
$connection = mysql_connect($server, $user, $pass) or die ("Could not connect to server ... \n" . mysql_error ());
//Select the database name
$select = mysql_select_db($database) or die ("Could not connect to database ... \n" . mysql_error ());
// check if the form has been submitted. If it has, process the form and save it to the database
if ($_SERVER['REQUEST_METHOD'] === 'POST')
{
// confirm that the 'id' value is a valid integer before getting the form data
if (is_numeric($_POST['id']))
{
//Get form data to make sure it's valid
$id = $_POST["id"];
$name = mysql_real_escape_string(htmlspecialchars($_POST['name']));
$dueDate = mysql_real_escape_string(htmlspecialchars($_POST['dueDate']));
$numOfPages = mysql_real_escape_string(htmlspecialchars($_POST['numOfPages']));
$numOfCopies = mysql_real_escape_string(htmlspecialchars($_POST['numOfCopies']));
$paperSize = mysql_real_escape_string(htmlspecialchars($_POST['paperSize']));
$paperColor = mysql_real_escape_string(htmlspecialchars($_POST['paperColor']));
$weight = mysql_real_escape_string(htmlspecialchars($_POST['weight']));
$finishing = mysql_real_escape_string(htmlspecialchars($_POST['finishing']));
$paymentMethod = mysql_real_escape_string(htmlspecialchars($_POST['paymentMethod']));
$printColor = mysql_real_escape_string(htmlspecialchars($_POST['printColor']));
$status = mysql_real_escape_string(htmlspecialchars($_POST['status']));
$comment = mysql_real_escape_string(htmlspecialchars($_POST['comment']));
// check that firstname/lastname fields are both filled in
if ($name == '' || $dueDate == '' || $numOfPages == '' || $numOfCopies == '' || $comment == '')
{
// generate error message
$error = 'Please fill in all required fields!';
//error, display form
displayForm($id,
$name,
$dueDate,
$numOfPages,
$numOfCopies,
$paperSize,
$paperColor,
$weight,
$finishing,
$paymentMethod,
$printColor,
$comment,
$status,
$error);
}
else
{
//Insert form data into the database or die if there is an error
print $sql;
$sql = ("UPDATE orders SET `name` = '".$name."',
due_date = '".$dueDate."',
numOfPages = '".$numOfPages."',
numOfCopies = '".$numOfCopies."',
paper_size = '".$paperSize."',
paper_color = '".$paperColor."',
weight = '".$weight."',
finishing = '".$finishing."',
payment_method = '".$paymentMethod."',
color = '".$printColor."',
comments = '".$comment."',
`status` = '".$status."' WHERE id = '".$id."'");
$result = mysql_query($sql) or die (mysql_error());
// once saved, redirect back to the view page
header("Location: http://localhost/Bubbles/view-orders.php");
}
}
else
{
// if the 'id' isn't valid, display an error
echo 'Error!';
}
}
else
{
// if the form hasn't been submitted, get the data from the db and display the form
// get the 'id' value from the URL (if it exists), making sure that it is valid
if (isset($_GET['id']) && is_numeric($_GET['id']) && $_GET['id'] > 0)
{
// query db
$id = $_GET['id'];
$result = mysql_query("SELECT * FROM orders WHERE id = '$id'") or die(mysql_error());
$row = mysql_fetch_array($result);
// check that the 'id' matches up with a row in the databse
if($row)
{
// get data from db
$id = $row['id'];
$name = $row['name'];
$dueDate = $row['due_date'];
$numOfPages = $row['numOfPages'];
$numOfCopies = $row['numOfCopies'];
$paperSize = $row['paper_size'];
$paperColor = $row['paper_color'];
$weight = $row['weight'];
$finishing = $row['finishing'];
$paymentMethod = $row['payment_method'];
$printColor = $row['color'];
$status = $row['status'];
$comment = $row['comments'];
// show form
displayForm($id,
$name,
$dueDate,
$numOfPages,
$numOfCopies,
$paperSize,
$paperColor,
$weight,
$finishing,
$paymentMethod,
$printColor,
$comment,
$status,
'');
}
else
{
// if no match, display result
echo "No results!";
}
}
else
{
// if the 'id' in the URL isn't valid, or if there is no 'id' value, display an error
echo 'Error!';
}
}
?>
已更新为HTML
<html>
<head>
</head>
<body>
<form action"" method="post">
<input type="hidden" name="id" value="<?php echo $id; ?>"/>
<div class="floatLeft">
<p>Name: <br /> <input type="text" name="name" value="<?php echo $name; ?>"/></p>
<p>Due Date (ex: yyyy-mm-dd): <br /> <input type="datetime" name="dueDate" value="<?php echo $dueDate; ?>" /></p>
<p># of Pages <br /> <input type="number" name="numOfPages" value="<?php echo $numOfPages; ?>"/></p>
<p># of Copies <br /> <input type="number" name="numOfCopies" value="<?php echo $numOfCopies; ?>"/></p>
</div>
<div class="floatLeft">
<p>Paper Size<br />
<select name = "paperSize" value="<?php echo $paperSize; ?>">
<option value="8.5 x 11in">8.5 x 11 inches</option>
<option value="8.5 x 14in">8.5 x 14 inches</option>
<option value="11 x 17in">11 x 17 inches</option>
</select>
</p>
<p>Paper Color<br />
<select name = "paperColor" value="<?php echo $paperColor; ?>">
<option value = "pulsar pink">Pulsar Pink</option>
<option value = "fireball fuchsia">Fireball Fuchsia</option>
<option value = "plasma pink">Plasma Pink</option>
<option value = "re-entry red">Re-entry Red</option>
<option value = "rocket red">Rocket Red</option>
<option value = "cosmic orange">Cosmic Orange</option>
<option value = "galaxy gold">Galaxy Gold</option>
<option value = "solar yellow">Solar Yellow</option>
<option value = "venus violet">Venus Violet</option>
<option value = "planetary purple">Planetary Purple</option>
<option value = "celestial blue">Celestial Blue</option>
<option value = "lunar blue">Lunar Blue</option>
<option value = "gamma green">Gamma Green</option>
<option value = "martian green">Martian Green</option>
<option value = "terra green">Terra Green</option>
<option value = "lift-off lemmon">Lift-off Lemon</option>
</select>
</p>
<p>Weight<br/>
<select name = "weight" value="<?php echo $weight; ?>">
<option value="20lbs">20lbs</option>
<option value="60lbs">60lbs</option>
<option value="65lbs">65lbs</option>
</select>
</p>
<p>Finishing<br />
<select name = "finishing" value="<?php echo $finishing; ?>">
<option value="none">None</option>
<option value="cutting">Cutting</option>
<option value="folding">Folding</option>
<option value="quaters">Quaters</option>
<option value="binding">Bindings</option>
</select>
</p>
<p>Payment method<br />
<select name = "paymentMethod" value="<?php echo $paymentMethod; ?>">
<option value="Cash">Cash</option>
<option value="Credit">Credit</option>
<option value="Check">Check</option>
<option value="Wilscard">Wilscard</option>
</select>
</p>
<p>Print BW/C<br />
<select name = "printColor" value="<?php echo $printColor; ?>">
<option value="Black">Black</option>
<option value="White">White</option>
<option value="Color">Color</option>
</select>
</p>
</p>
</div>
<div class="floatLeft">
<p>Status<br />
<select name = "status" value="<?php echo $row['status']; ?>">
<option value="Recieved">Received</option>
<option value="In Progress">In Progress</option>
<option value="Completed">Completed</option>
</select>
<p>Comment (Cannot exceed 200 characters):<br />
<textarea name="comment" value="<?php echo $comment; ?>"></textarea><br />
</p>
<input type="submit" value="Edit Order" />
</div>
</body>
</html>
更新：我修复了代码，感谢所有人的帮助，但我的错误是，当我检查空字段时，评论框中没有任何内容，所以它认为所有字段都是空的，而实际上它们并非如此＃39;吨。我使用此代码更新了字段检查，现在工作正常。
我更新了if语句：
if ($name == '' || $dueDate == '' || $numOfPages == '' || $numOfCopies == '' || $comment == '')
对此：
if ($name == '' || $dueDate == '' || $numOfPages == '' || $numOfCopies == '')
答案 0 :(得分：0)
在$ sql变量中创建查询后，您似乎没有运行查询。您将要像以后在代码中那样执行查询：
$result = mysql_query($sql) or die(mysql_error());
这将在成功时返回true或在失败时返回false（并且死亡）。
答案 1 :(得分：0)
如果您执行 UPDATE sql语句，应该会给您一些错误（因为您忘记了 SET ）。但是，您没有执行它。解决该问题后，您需要将 UPDATE 语句更改为
$sql = "UPDATE orders
SET
`name` = '".$name."',
due_date = '".$dueDate."',
numOfPages = '".$numOfPages."',
numOfCopies = '".$numOfCopies."',
paper_size = '".$paperSize."',
paper_color = '".$paperColor."',
weight = '".$weight."',
finishing = '".$finishing."',
payment_method = '".$paymentMethod."',
color = '".$printColor."',
comments = '".$comment."',
`status` = '".$status."'
WHERE
id = '".$id."'";
参考：https://dev.mysql.com/doc/refman/5.0/en/update.html
注意：我已转发name和status列，因为它们是保留字
答案 2 :(得分：0)
使用此查询可以解决您的问题：
$sql = "UPDATE orders set name ='".$name."' set due_date = '".$dueDate."' set numOfPages = '".$numOfPages."' set numOfCopies = '".$numOfCopies."' set paper_size = '".$paperSize."' set paper_color = '".$paperColor."' set weight = '".$weight."' set finishing = '".$finishing."' set payment_method = '".$paymentMethod."' set color = '".$printColor."' set comments = '".$comment."' set status = '".$status."' WHERE id = '".$id."' ";