在尝试调试这段代码几个小时后，我发现我无法弄清楚为什么我的编辑表单永远不会更新。我不确定是因为我没有正确使用 GET 或 POST 方法，还是错误地使用了 mysql，或者是两者的组合。我什至不明白为什么一行打印“hi”；不会出现。如果我在点击编辑提交按钮时取出代码测试行，则会显示打印行，但我的数据库不会更新。所以我想我陷入了无法再进行打印行调试的困境，直到我弄清楚我做错了什么。这是我的代码..我在“print“hi”;”旁边发表了评论未显示的行。请记住，我很确定我尝试了 GET 和 POST 的每种组合，但它仍然没有显示......
<html lang="en">
<head>
<title>Employee</title>
</head>
<body>
<a href="employ.php">Clean</a> <br>
<form method="post" action="employ.php">
<input type="text" name="fname">First Name<br>
<input type="text" name="lname">Last Name<br>
<input type="text" name="email">email<br>
<input type="text" name="zip">zip code<br>
<input type="submit" name="add" value="Add"> <!-- button itself -->
</form>
<br>
<?php //server login name password database
$link = mysqli_connect("server", "login", "password", "database") or die(mysqli_error());
if(isset($_POST['add'])) //this processes after user submits data.
{
$fname = $_POST['fname'];
$lname = $_POST['lname'];
$email = $_POST['email'];
$zip = $_POST['zip'];
$re = "/^[a-zA-Z]+(([\'\- ][a-zA-Z])?[a-zA-Z]*)*$/";
$reEmail = "/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/";
$reZip = "/^\d{5}$/";
//if user passes re test
if( preg_match($re, $fname) && preg_match($re, $lname)
&& preg_match($reEmail, $email) && preg_match($reZip, $zip) )
{ //display current table
$querycheck = "select * from employees where fname='$fname' and email='$email'";
$resultcheck = mysqli_query($link, $querycheck); //link query to database
if(mysqli_num_rows($resultcheck) == 0)// test if query does "nothing"
{//if not process the insert query
$query = "insert into employees values('', '$fname', '$lname', '$email', '$zip')";
mysqli_query($link, $query); //link query to database
print "Employee Added"; // print confirmation
}
else
{
print "That record already exists!";
}
}
else
{
print "You did not fill out the form correctly!";
}
} ////////////////////////////////edit portion/////////////////////////////
if(isset($_GET['edit']))
{
print "teseting edit<br><br>";
?>
<form method="get" action="employ.php">
<input type="text" name="fname" value = "<?php echo $_GET['fname']?>">First Name<br>
<input type="text" name="lname" value = "<?php echo $_GET['lname']?>">Last Name<br>
<input type="text" name="email" value = "<?php echo $_GET['email']?>">email<br>
<input type="text" name="zip" value = "<?php echo $_GET['zip']?>">zip code<br>
<input type="hidden" name="employeeid" value = "<?php echo $_GET['employeeid']?>">
<input type="submit" name="endedit" value="Edit"> <!-- button itself -->
</form>
<?php
print "teseting end edit <br><br>";
if(isset($_POST['endedit'])) //this processes after user submits edited data
{ //tried get and post
print "hi"; // DOESNT APPEAR
$fname = $_POST['fname'];
$lname = $_POST['lname'];
$email = $_POST['email'];
$zip = $_POST['zip'];
$employeeidtemp = $_POST['employeeid'];
$re = "/^[a-zA-Z]+(([\'\- ][a-zA-Z])?[a-zA-Z]*)*$/";
$reEmail = "/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/";
$reZip = "/^\d{5}$/";
//if user passes re test
if( preg_match($re, $fname) && preg_match($re, $lname)
&& preg_match($reEmail, $email) && preg_match($reZip, $zip) )
{ //display current table
//$querycheck = "select * from employees where employeeid='$employeeidtemp'";
//$resultcheck = mysqli_query($link, $querycheck); //link query to database
// if(mysqli_num_rows($resultcheck) == 0)// test if query does "nothing"
// {
$query = "UPDATE employees SET fname='$fname', lname='$lname', email='$email', zip='$zip' WHERE employeeid='$employeeidtemp'";
mysqli_query($link, $query); //link query to database
print "Employee Updated"; // print confirmation
// }
// else
// print "huh?";
}
else
{
print "You did not fill out the form correctly!";
}
}
}
if(isset($_GET['delete']))
{
print "teseting delete<br><br>";
}
showemp();
function showemp()
{
global $link;
if(isset($_GET['choice']))
{
$choice = $_GET['choice'];
}
else
{
$choice = "lname";
}
$query = "select * from employees order by $choice";
$result = mysqli_query($link, $query);
// print table (happens first before input)
// first print row of links/headers that sort
print "<table border='1'>
<tr>
<th>Edit</th>
<th>Delete</th>
<th><a href='employ.php?choice=fname'>FNAME</a></th>
<th><a href='employ.php?choice=lname'>LNAME</a></th>
<th><a href='employ.php?choice=email'>EMAIL</a></th>
<th><a href='employ.php?choice=zip'>ZIP</a></th>
</tr>";
//while the next row (set by query) exists?
while($row = mysqli_fetch_row($result))
{
list($employeeid, $fname, $lname, $email, $zip) = $row;
print "<tr>
<td><a href='employ.php?edit=yes&employeeid=$employeeid&fname=$fname&lname=$lname&email=$email&zip=$zip'>Edit</a></td>
<td><a href='employ.php?delete=yes&employeeid=$employeeid
onclick='return confirm(\"Are you sure\")'>Delete</a></td>
<td>$fname</td>
<td>$lname</td>
<td>$email</td>
<td>$zip</td>
</tr>";
}
print "</table>";
}
?>
</body>
</html>
最佳答案
您有几个错误:
- 您不检查查询结果，至少使用 代码 mysqli_query($link, $query) 或 die(mysqli_error($link));
当我通过检查错误来踢你的代码时，我发现添加查询不起作用 - 我的整数字段不接受你的 employeeid 空字符串值。
关于php - 编辑表单无法在 PHP 中使用 mysql，将数据处理为 href 但不运行测试打印行，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26374895/