PHP表單（使用POST）不會提交或發送電子郵件，僅顯示空白頁

Question

我有以下HTML：

<form method="post" action="https://www.domain.co.uk/v2/contact.php" id="contactform">
              <p><label for="name"><span class="required">*</span> Your Name</label><br>
              <input name="name" type="text" id="name" size="30" value="" class="input" required> </p>
              <p><label for="email"><span class="required">*</span> Email</label><br>
              <input name="email" type="email" id="email" size="30" value="" class="input" required></p>
              <p><label for="phone">Phone</label><br>
              <input name="phone" type="tel" id="phone" size="30" value="" class="input"></p>
              <p><label for="subject">Subject</label><br>
              <select name="subject" id="subject" class="input">
              <option value="Not sure" selected="selected">Not sure</option>
                <option value="this">this</option>
                <option value="that">that</option>
              </select></p>              
              <p><label for="comments"><span class="required">*</span> Message</label><br>
              <textarea name="comments" cols="40" rows="3" id="comments" class="input" required></textarea></p>
              <p><input type="submit" class="submit" id="submit" value="Submit"></p>
              </form>

和以下contact.php

<?php

    if ($_POST['name'] != "") {
    $_POST['name'] = filter_var($_POST['name'], FILTER_SANITIZE_STRING);
    if ($_POST['name'] == "") {
        $errors .= 'Please enter a valid name.<br/><br/>';
    }
    } else {
        $errors .= 'Please enter your name.<br/>';
    }

    if ($_POST['email'] != "") {
    $email = filter_var($_POST['email'], FILTER_SANITIZE_EMAIL);
    if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
        $errors .= "$email is <strong>NOT</strong> a valid email address.<br/><br/>";
    }
    } else {
        $errors .= 'Please enter your email address.<br/>';
    }

    if ($_POST['phone'] != "") {
    $_POST['phone'] = filter_var($_POST['phone'], FILTER_SANITIZE_STRING);
    if ($_POST['phone'] == "") {
        $errors .= 'Please enter your phone number.<br/>';
    }
    } else {
        $errors .= 'Please enter your phone number.<br/>';
    }

    if ($_POST['subject'] != "") {
    $_POST['subject'] = filter_var($_POST['subject'], FILTER_SANITIZE_STRING);
    if ($_POST['subject'] == "") {
        $errors .= 'Please choose a subject.<br/>';
    }
    } else {
        $errors .= 'Please choose a subject.<br/>';
    }

    if ($_POST['comments'] != "") {
    $_POST['comments'] = filter_var($_POST['comments'], FILTER_SANITIZE_STRING);
    if ($_POST['comments'] == "") {
        $errors .= 'Please enter a message.<br/>';
    }
    } else {
        $errors .= 'Please enter a message.<br/>';
    }


    if (!$errors) {
            $mail_to = 'info@myemails.co.uk';
            $subject = 'Enquiry';
            $message .= 'Regarding: ' . $_POST['subject'] . "\n\n";
            $message .= 'Name: ' . $_POST['name'] . "\n\n";
            $message .= 'Email: ' . $_POST['email'] . "\n\n";
            $message .= 'Phone: ' . $_POST['phone'] . "\n\n";
            $message .= 'Message ' . $_POST['comments'] . "\n\n";

            $success = mail($mail_to, $subject, $message, "From: <$email>");

            if ($success){
              print "sent";
            }
            else{
              print "failed";
            }
    }

?>

無論我進行了什么更改或嘗試，最終我都在contact.php的空白頁面上看到了已發送或失敗的消息（已刪除我的JavaScript驗證，以防我在其中引起問題），同樣，錯誤日志中也沒有任何內容，盡管返回了代碼，但我找不到問題？ 不確定我盯着它看了太久而錯過了明顯的東西還是有一個更深層次的問題？

任何指針表示贊賞。

var_dump顯示它正在獲取信息：

array(5) { ["name"]=> string(10) "Joe Bloggs" ["email"]=> string(16) "joe@anyemail.com" ["phone"]=> string(11) "07123456789" ["subject"]=> string(8) "Not sure" ["comments"]=> string(17) "test message here" }

Answer 1

您使用了字符串連接，但是在此之前您沒有定義變量，如果您更改代碼，如下所示：

<?php

        $errors = '';

        if ($_POST['name'] != "") {
        $_POST['name'] = filter_var($_POST['name'], FILTER_SANITIZE_STRING);
        if ($_POST['name'] == "") {
                $errors .= 'Please enter a valid name.<br/><br/>';
        }
        } else {
                $errors .= 'Please enter your name.<br/>';
        }

        if ($_POST['email'] != "") {
        $email = filter_var($_POST['email'], FILTER_SANITIZE_EMAIL);
        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
                $errors .= "$email is <strong>NOT</strong> a valid email address.<br/><br/>";
        }
        } else {
                $errors .= 'Please enter your email address.<br/>';
        }

        if ($_POST['phone'] != "") {
        $_POST['phone'] = filter_var($_POST['phone'], FILTER_SANITIZE_STRING);
        if ($_POST['phone'] == "") {
                $errors .= 'Please enter your phone number.<br/>';
        }
        } else {
                $errors .= 'Please enter your phone number.<br/>';
        }

        if ($_POST['subject'] != "") {
        $_POST['subject'] = filter_var($_POST['subject'], FILTER_SANITIZE_STRING);
        if ($_POST['subject'] == "") {
                $errors .= 'Please choose a subject.<br/>';
        }
        } else {
                $errors .= 'Please choose a subject.<br/>';
        }

        if ($_POST['comments'] != "") {
        $_POST['comments'] = filter_var($_POST['comments'], FILTER_SANITIZE_STRING);
        if ($_POST['comments'] == "") {
                $errors .= 'Please enter a message.<br/>';
        }
        } else {
                $errors .= 'Please enter a message.<br/>';
        }

        $message = '';
        if (empty($errors)) {
                        $mail_to = 'info@myemails.co.uk';
                        $subject = 'Enquiry';
                        $message .= 'Regarding: ' . $_POST['subject'] . "\n\n";
                        $message .= 'Name: ' . $_POST['name'] . "\n\n";
                        $message .= 'Email: ' . $_POST['email'] . "\n\n";
                        $message .= 'Phone: ' . $_POST['phone'] . "\n\n";
                        $message .= 'Message ' . $_POST['comments'] . "\n\n";

                        $success = mail($mail_to, $subject, $message, "From: <$email>");

                        if ($success){
                            print "sent";
                        }
                        else{
                            print "failed";
                        }
        } else {
            echo $errors;
        }

?>

有用。 您說自己在現場，所以如果您願意，可以添加以下幾行：

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

在php文件的頂部，以查看錯誤，但客戶端也將看到這些錯誤。 您可以為它們周圍的IP添加IP Check。