Question

我的问题太长了，无法找到答案。请原谅我。也许我只是不知道如何缩写我的问题。那么这就是问题和问题。请参阅以下代码：

<?php 
    if(isset($_POST['submit'])) {
        $name = $_POST['name'];
        $email = $_POST['email'];

        $server = mysqli_connect('localhost', 'root', '', 'newsletter') or die("The Server Cannot Be Reached at this Time!");
        //$dbc = mysqli_select_db($server, 'newsletter') or die("There is a problem accessing the databse!");
        $query = mysqli_query($server, "INSERT INTO subscribers (name, email) VALUES('$name','$email')");

        $name = strip_tags($name);
        $email = strip_tags($email);

        if(empty($name) || empty($email)) {
            echo "All Fields Must Be Filled In!";
        } else {
            echo "You have been successfully subscribed";
        }
    }
    mysqli_close($server);
?>

此代码有效。当用户填写表单时，它会将信息提供给数据库。我注意到，当用户只填写一个字段，即名称并将电子邮件字段留空时，if语句将返回 “所有字段必须填写” 行。然后你返回页面并填写电子邮件字段，一切都很好。但是当我检查数据库时，我注意到 电子邮件 在表格上没有填写“strong”。这是正常的吗？或者我做错了什么。感谢

Answer 1

您在插入后正在检查empty。将插入代码移动到else部分

<?php 
if(isset($_POST['submit'])) {
    $name = $_POST['name'];
    $email = $_POST['email'];

    $name = strip_tags($name);
    $email = strip_tags($email);

    if(empty($name) || empty($email)) {
        echo "All Fields Must Be Filled In!";
    } else {
        $server = mysqli_connect('localhost', 'root', '', 'newsletter') or die("The Server Cannot Be Reached at this Time!");
        //$dbc = mysqli_select_db($server, 'newsletter') or die("There is a problem accessing the databse!");
        $query = mysqli_query($server, "INSERT INTO subscribers (name, email) VALUES('$name','$email')");
        mysqli_close($server);
        echo "You have been successfully subscribed";
    }
}
?>

Answer 2

您希望将用户的插入移动到if语句的成功分支中：

<?php 

if(isset($_POST['submit'])) {

    $name = $_POST['name'];
    $email = $_POST['email'];





$name = strip_tags($name);
$email = strip_tags($email);


if(empty($name) || empty($email)) {

        echo "All Fields Must Be Filled In!";


    } else {
        $server = mysqli_connect('localhost', 'root', '', 'newsletter') or die("The Server Cannot Be Reached at this Time!");
        //$dbc = mysqli_select_db($server, 'newsletter') or die("There is a problem accessing the databse!");

        $query = mysqli_query($server, "INSERT INTO subscribers (name, email) VALUES('$name','$email')");
        mysqli_close($server);

        echo "You have been successfully subscribed";


            }



}




?>

Answer 3

更改此

if(empty($name) || empty($email))

进入这个

if(empty($name) && empty($email))

||管道标志意味着或在您的情况下，您告诉任何一个名称为空或电子邮件是空的，但在＆amp;＆amp;和签名我们告诉任何一个名称为空，电子邮件是空的返回错误。

$name = strip_tags($_POST['name']);

Answer 4

以下行应写在else close

$query = mysqli_query($server, "INSERT INTO subscribers (name, email) VALUES('$name','$email')");

并使用

 if(empty($name) && empty($email))

不是

if(empty($name) || empty($email))

Answer 5

您应该在else条件下运行insert查询，因为在这里您要检查字段是否为空。

<?php 

if(isset($_POST['submit'])) {
   $name  = $_POST['name'];
   $email = $_POST['email'];
   $name  = strip_tags($name);
   $email = strip_tags($email);

   if(empty($name) || empty($email)) {
      echo "All Fields Must Be Filled In!";
   } else {
      $server = mysqli_connect('localhost', 'root', '', 'newsletter') or die("The Server Cannot Be Reached at this Time!");
      $query  = mysqli_query($server, "INSERT INTO subscribers (name, email) VALUES('$name','$email')");
      mysqli_close($server);
      echo "You have been successfully subscribed";
   }
}

?>

if语句将2个字段插入db

5 个答案: