PHP 郵箱 function 發送無附件郵件

Question

我正在嘗試使用 PHP 中的郵件 function 發送帶附件的郵件，我的問題是有時郵件成功到達附件，有時附件不包含在郵件中，發送的郵件沒有附件。 當我檢查 tmp 文件夾時，我找不到該文件。

我的 php 代碼：

<?php

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

$First = $_POST['First'];
$Last = $_POST['Last'];
$Email = $_POST['email'];
$phone = $_POST['phone'];
$position = $_POST['position'];
$experience = $_POST['experience'];
$Address = $_POST['address'];
$Full_Name = $First."".$Last;

$attachment=$_FILES["attachment"]["tmp_name"];
 $folder="tmp/";
 $file_name=$_FILES["attachment"]["name"];




$to = 'mh6@gmail.com'; 
 
// Sender 
$from = "$Email"; 
$fromName = "$Full_Name"; 
 
// Email subject 
$subject = 'Mail From Applied Candidate';  
 
// Attachment file 
$file = $folder."".$file_name;




// Email body content 
$htmlContent = ' 
    <h3>Candidate Information</h3> 
    <p>Name: '.$Full_Name.'</p>'.'<p>Email: '.$Email.'</p>'.'<p>Phone: '.$phone.'</p>'.'<p> Address: '.$Address.'</p>'.'<p>Position: '.$position.'</p>'.'<p>Experience: '.$experience.'</p>';
 
// Header for sender info 
$headers = "From: $fromName"." <".$from.">"; 
 
// Boundary  
$semi_rand = md5(time());  
$mime_boundary = "==Multipart_Boundary_x{$semi_rand}x";  
 
// Headers for attachment  
$headers .= "\nMIME-Version: 1.0\n" . "Content-Type: multipart/mixed;\n" . " boundary=\"{$mime_boundary}\""; 
 
// Multipart boundary  
$message = "--{$mime_boundary}\n" . "Content-Type: text/html; charset=\"UTF-8\"\n" . 
"Content-Transfer-Encoding: 7bit\n\n" . $htmlContent . "\n\n";  
 
// Preparing attachment 
if(!empty($file) > 0){ 
    if(is_file($file)){ 
        $message .= "--{$mime_boundary}\n"; 
        $fp =    @fopen($file,"rb"); 
        $data =  @fread($fp,filesize($file)); 
 
        @fclose($fp); 
        $data = chunk_split(base64_encode($data)); 
        $message .= "Content-Type: application/octet-stream; name=\"".basename($file)."\"\n" .  
        "Content-Description: ".basename($file)."\n" . 
        "Content-Disposition: attachment;\n" . " filename=\"".basename($file)."\"; size=".filesize($file).";\n" .  
        "Content-Transfer-Encoding: base64\n\n" . $data . "\n\n"; 
    } 
} 
$message .= "--{$mime_boundary}--"; 
$returnpath = "-f" . $from; 
 
// Send email 
$mail = @mail($to, $subject, $message, $headers, $returnpath);  
 


 }


?>

html：

<form enctype="multipart/form-data" id="survey-form" action = "applyData" method="POST">

    <!-- name -->
    <label id="name-label" class="row-label" for="name">First Name:</label>
    <input name="First" class="row-input" type="text" placeholder="Enter your First name" required>

  <label id="name-label" class="row-label" for="name">Last Name:</label>
    <input name="Last"  class="row-input" type="text" placeholder="Enter your Last name" required>


    <!-- email -->
    <label id="email-label" class="row-label" for="email">Email:</label>
    <input name="email"  class="row-input" type="email" placeholder="Enter your email" required>


    <!-- address -->
    <label id="email-label" class="row-label" for="email">Address:</label>
    <input name="address"  class="row-input" type="text" placeholder="Enter your address" required>


    <!-- Phone -->

        <label id="number-label" class="row-label" for="number">Phone Number:</label>
    <input name="phone"  class="row-input" type="number" placeholder="Enter your phone number"  required>



      <label id="name-label" class="row-label" for="name">Position you are applying for:</label>
    <input name="position"  class="row-input" type="text" placeholder="Enter Position" required>


    <!-- years of experience -->
    <label id="number-label" class="row-label" for="number">Years of experience</label>
    <input name="experience" class="row-input" type="number" placeholder="Enter number of years of experience" required>



   <label id="name-label" class="row-label" for="name">Upload Cv:</label>
    <input name="attachment" accept=".pdf,.doc,.docx" class="row-input" type="file" required>

    <!-- submit button -->
    <button id="submit" value="submit" type="submit" name = "submit">Submit</button>

  </form>

Answer 1

請嘗試使用 PHP Mailer：

https://github.com/PHPMailer/PHPMailer

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require $_SERVER["DOCUMENT_ROOT"].'/PHPMailer/src/Exception.php';
require $_SERVER["DOCUMENT_ROOT"].'/PHPMailer/src/PHPMailer.php';


            $upload_dir = "/path_to_uploads_folder/";
            if($_REQUEST['attachment']){
                $file_arr = explode(',',$_REQUEST['attachment']);
                $p = count(file_arr);
                for ($q=0; $q <$p ; $q++) {
                    $files[] = $upload_dir.$file_arr[$q];
                }
            }

        $mail1 = new PHPMailer(true);

      try {
            $mail1->setFrom($email);           
            $mail1->addAddress($to);

            for($i=0;$i<count($files);$i++)
                {
                $file = $files[$i];
            $mail1->addAttachment($file); 
            }
            $mail1->isHTML(true);                                  
            $mail1->Subject = $subject;
            $mail1->Body    = $body;
            $mail1->AltBody = $body;
            $mail1->send();

            } catch (Exception $e) {
                ?>
            <script language="javascript">
                var message = '<?php echo "Message could not be sent. Mailer Error: {$mail1->ErrorInfo}" ?>';
            alert(message);
            window.location='https://www.example.com/';
            </script>
            <?php
            exit;
    echo "Message could not be sent. Mailer Error: {$mail1->ErrorInfo}";
      }