How can PHP be used to handle file uploads and send attachments via email without user input?

To handle file uploads and send attachments via email without user input, you can use PHP to first upload the file to the server, then attach the uploaded file to an email and send it using the PHP `mail()` function. 

```php
<?php
// Check if file is uploaded
if(isset($_FILES['file'])){
    $file_name = $_FILES['file']['name'];
    $file_tmp = $_FILES['file']['tmp_name'];
    
    // Upload file to server
    move_uploaded_file($file_tmp, 'uploads/' . $file_name);
    
    // Email settings
    $to = 'recipient@example.com';
    $subject = 'File Attachment';
    $message = 'Please see the attached file.';
    $headers = 'From: sender@example.com';
    
    // Attach file to email
    $file = 'uploads/' . $file_name;
    $content = file_get_contents($file);
    $content = chunk_split(base64_encode($content));
    $uid = md5(uniqid(time()));
    
    $header = "From: sender@example.com\r\n";
    $header .= "Reply-To: sender@example.com\r\n";
    $header .= "MIME-Version: 1.0\r\n";
    $header .= "Content-Type: multipart/mixed; boundary=\"" . $uid . "\"\r\n\r\n";
    
    $message = "--" . $uid . "\r\n";
    $message .= "Content-type:text/plain; charset=iso-8859-1\r\n";
    $message .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
    $message .= $message . "\r\n\r\n";
    
    $message .= "--" . $uid . "\r\n";
    $message .= "Content-Type: application/octet-stream; name=\"" . $file_name . "\"\r\n";
    $message .= "Content-Transfer-Encoding: base64\r\n";
    $message .= "Content-Disposition: attachment; filename=\"" . $file_name . "\"\r\n\r\n";
    $message .= $content . "\r\n\r\n";
    $message .= "--" . $uid . "--";
    
    // Send email with attachment
    if (mail($to, $subject, $message, $header)) {
        echo 'Email sent with attachment.';
    } else {
        echo 'Failed to send email.';
    }
}
?>

Keywords

PHP file uploads email attachments automation server-side programming

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