Question

我正在尝试将已注册的电子邮件附加到csv文件中，但它显示成功，而文件中没有任何内容，没有任何附加内容，而当我打印_ fwrite它表示15

这是我的代码

  <form action="send.php" method="post"  name="newsletter" class="">
                            <label class="sr-only">Email:</label>
                                <div class="input-group mb-2">
                                    <input type="email" name="email" class="form-control rounded-right bg-transparent" placeholder="johndoe@example.com" aria-label="Username" aria-describedby="basic-addon1" style="border: 1px solid #bdbdbd;">
                                    <button type="submit" class="home-signup-email-btn btn btn-blue btn-lg ml-3 rounded py-0">Sign Up</button>
                                </div>
                        </form>

  $email = $_POST['email'];
//$filename = 'suscribers.txt';
//$somecontent = "$email\n";

// Let's make sure the file exists and is writable first.

$txt = '/n'.$_POST['email'].'/n';
$file = fopen('mailing_list.csv','a');
if (fwrite($file,$txt)){


// fwrite($file,$txt);
$message= "Success!. You have been added to our email list.";
$status  = "success";
$data = array(
            'status'  => $status,
            'message' => $message
        );

        echo json_encode($data);}
        else
            echo "fail";

Answer 1

尝试使用：

$file = 'people.txt';
// The new person to add to the file
$person = "John Smith\n";
// Write the contents to the file, 
// using the FILE_APPEND flag to append the content to the end of the file
// and the LOCK_EX flag to prevent anyone else writing to the file at the same time
file_put_contents($file, $person, FILE_APPEND | LOCK_EX);

Answer 2

使用+模式：

打开文件进行读/写。保留文件中的现有数据。文件指针从文件末尾开始。如果文件不存在，则创建新文件

<form action="send.php" method="post"  name="newsletter" class="">
                                <label class="sr-only">Email:</label>
                                    <div class="input-group mb-2">
                                        <input type="email" name="email" class="form-control rounded-right bg-transparent" placeholder="johndoe@example.com" aria-label="Username" aria-describedby="basic-addon1" style="border: 1px solid #bdbdbd;">
                                        <button type="submit" class="home-signup-email-btn btn btn-blue btn-lg ml-3 rounded py-0">Sign Up</button>
                                    </div>
                            </form>

      $email = $_POST['email'];

    // Let's make sure the file exists and is writable first.

    $txt = '/n'.$_POST['email'].'/n';
    $file = fopen('mailing_list.txt','a+');
    if (fwrite($file,$txt)){

    $message= "Success!. You have been added to our email list.";
    $status  = "success";
    $data = array(
                'status'  => $status,
                'message' => $message
            );

            echo json_encode($data);

             fclose($file);
            chmod($file, 0777); 
        }else {
         echo "fail"; 
          }

Answer 3

我找到了一个解决方案，它没有写入文件，因为我没有添加fclose来关闭fopen

数据不附加到php中的文件

3 个答案: