Question

我正在尝试创建一个表单，其中有人输入姓名（非必填），电子邮件地址和学校科目列表（非必填）。由于某些原因，如果满足所有检查要求（输入的名称为全字母或空白，表示电子邮件有效且完整），则提交的内容仍未添加到我的CSV文件中。

代码如下：

<?php
$error = '';
$name = '';
$email = '';
$subjects = '';

function clean_text($string)
{
 $string = trim($string);
 $string = stripslashes($string);
 $string = htmlspecialchars($string);
 return $string;
}


if(isset($_POST["submit"])) {
    $name = clean_text($_POST("user_name"));
        if(!preg_match("/^[a-zA-Z ]*$/",$name)) {
            $error .= '<p><label class="text-danger">Only letters and white space allowed</label></p>';
        }
    if(empty($_POST["user_mail"])) {
        $error .= '<p><label class="text-danger">Please Enter your Email</label></p>';
    } else {
        $email = clean_text($_POST["user_mail"]);
        if(!filter_var($email, FILTER_VALIDATE_EMAIL)) {
            $error .= '<p><label class="text-danger">Invalid email format</label></p>';
        }
    }
    $subjects = clean_text($_POST["user_subjects"]);
    
    if($error == ''){
        $file_open = fopen("data.csv", a);
        $num_rows = count(file("data.csv"));
        if($num_rows > 1) {
            $num_rows = ($num_rows - 1) + 1; //Generates serial number
        }
        $form_data = array(
            'serial_num' => $num_rows,
            'name' => $name,
            'email' => $email,
            'subjects' => $subjects
        );
        fputcsv($file_open, $form_data);
        $error = '<label class="text-success">Thank you for contacting us</label>';
        $name = '';
        $email = '';
        $subjects = '';
    }
}

?>

<!DOCTYPE html>
<html>
    <head>
        <style>
            
            
            form {
                /* Just to center the form on the page */
                margin: 0 auto;
                width: 400px;
                /* To see the outline of the form */
                padding: 1em;
                border: 1px solid #CCC;
                border-radius: 1em;
            }
            
            form div + div {
                margin-top: 1em;
            }
            
            label {
            /* To make sure that all labels have the same size and are properly aligned */
            display: inline-block;
            width: 120px;
            text-align: right;
            }
            
            input, textarea {
                /* To make sure that all text fields have the same font settings
                By default, textareas have a monospace font */
                font: 1em sans-serif;

                /* To give the same size to all text fields */
                width: 250px;
                box-sizing: border-box;
                /* To harmonize the look & feel of text field border */
                border: 1px solid #999;
            }
            
            input:focus, textarea:focus {
            /* To give a little highlight on active elements */
            border-color: #1fb;
            }
            
            textarea {
            /* To properly align multiline text fields with their labels */
            vertical-align: top;
                
            /* To remove resizability feature */
            resize: none;

            /* To give enough room to type some text */
            height: 5em;
            }
            
            .button {
            /* To position the buttons to the same position of the text fields */
            padding-left: 120px; /* same size as the label elements */
            }
            
            button {
            /* This extra margin represent roughly the same space as the space
            between the labels and their text fields */
            margin-left: .5em;
            }
        </style>
    </head>
    <body>
        <form method="post">
  <div>
    <?php echo $error; ?>
    <label for="mail">E-mail:</label>
    <input type="email" id="mail" name="user_mail" value="<?php echo $email; ?>">
  </div>
  <div>
    <label for="name" id="namelabel">(Optional) Name:</label>
    <input type="text" id="name" name="user_name" value="<?php echo $name; ?>">
  </div>
  <div>
    <label for="msg">(Optional) Requested Subjects:</label>
    <textarea id="msg" name="user_subjects" value="<?php echo $subjects; ?>"></textarea>
  </div>
    <div class="button">
  <button type="submit">Submit</button>
</div>
</form>
    </body>
</html>

为什么不将表单提交添加到我的CSV文件中？

0 个答案: