adding mandrill email attachments using foreach loop - php

Question

I need to reply to incoming emails including the attachment they contain.
I wrote this code, but for some reason when I check my debug log and mandrill API logs the attachment isn't included into the request.
Where's my fault?
if ($message['attachments'])
{
$mail=
[
'html' => $mail->msg->html,
'text' => $mail->msg->text,
'subject' => $mail->msg->subject,
'from_email' => 'test#test.com',
'from_name' => $mail->msg->from_name,
'to' => [
[
'email' => 'test#test.com',
'name' => 'test#test.com',
'type' => 'to'
]
],
'headers' => [
'Reply-To' => $mail->msg->from_email
],
];
//just some sample data for testing
foreach ($message['attachment'] as $attachment)
{
$mail['attachments']['name'] ='sample.png';
$mail['attachments']['type'] ='image/png';
$mail['attachments']['content'] ='iVBORw0KGgoAAAANSUhEUgAAABwAAAASCAMAAAB/2U7WAAAABlBMVEUAAAD///+l2Z/dAAAASUlEQVR4XqWQUQoAIAxC2/0vXZDrEX4IJTRkb7lobNUStXsB0jIXIAMSsQnWlsV+wULF4Avk9fLq2r8a5HSE35Q3eO2XP1A1wQkZSgETvDtKdQAAAABJRU5ErkJggg==';
}
$async = false;
$ip_pool = 'Main Pool';
$v = var_export( $mail, true);
file_put_contents('phplog.txt', 'gesendet: ' . $v, FILE_APPEND);
$result = $mandrill->messages->send($mail, $async, $ip_pool, $send_at);
}

Answer 1

Below line looks suspicious. If you check https://mandrillapp.com/api/docs/messages.html here. You can clearly see attachments is a multidimensional array.
//just some sample data for testing
foreach ($message['attachment'] as $attachment)
{
$mail['attachments']['name'] ='sample.png';
$mail['attachments']['type'] ='image/png';
$mail['attachments']['content'] ='iVBORw0KGgoAAAANSUhEUgAAABwAAAASCAMAAAB/2U7WAAAABlBMVEUAAAD///+l2Z/dAAAASUlEQVR4XqWQUQoAIAxC2/0vXZDrEX4IJTRkb7lobNUStXsB0jIXIAMSsQnWlsV+wULF4Avk9fLq2r8a5HSE35Q3eO2XP1A1wQkZSgETvDtKdQAAAABJRU5ErkJggg==';
}
At least it should be like following, but still you don't use $attachment in your code. But the correct usage like following.
foreach ($message['attachment'] as $key => $attachment)
{
$mail['attachments'][$key]['name'] ='sample.png';
$mail['attachments'][$key]['type'] ='image/png';
$mail['attachments'][$key]['content'] ='iVBORw0KGgoAAAANSUhEUgAAABwAAAASCAMAAAB/2U7WAAAABlBMVEUAAAD///+l2Z/dAAAASUlEQVR4XqWQUQoAIAxC2/0vXZDrEX4IJTRkb7lobNUStXsB0jIXIAMSsQnWlsV+wULF4Avk9fLq2r8a5HSE35Q3eO2XP1A1wQkZSgETvDtKdQAAAABJRU5ErkJggg==';
}
If you want to try in more clear way please use as following :
$attachment = [];
$attachment['name'] ='sample.png';
$attachment['type'] ='image/png';
$attachment['content'] ='iVBORw0KGgoAAAANSUhEUgAAABwAAAASCAMAAAB/2U7WAAAABlBMVEUAAAD///+l2Z/dAAAASUlEQVR4XqWQUQoAIAxC2/0vXZDrEX4IJTRkb7lobNUStXsB0jIXIAMSsQnWlsV+wULF4Avk9fLq2r8a5HSE35Q3eO2XP1A1wQkZSgETvDtKdQAAAABJRU5ErkJggg==';
$mail['attachments'][] = $attachment;
UPDATED ACCORDING TO COMMENT :
things look fine, just change your if statement if ($message['attachments']) to if (is_array($message['attachments']) && count($message['attachments']) > 1) then after if statment place $message['attachments'] = array_values($message['attachments']);
so loop like the following one. Just pay attention to $attachment I added to semantic keys to it, you can change according to your needs. I don't know where is your source you getting file, static or file upload etc. I added as an example.
foreach ($message['attachment'] as $key => $attachment)
{
$mail['attachments'][$key]['name'] =$attachment['fileName'];
$mail['attachments'][$key]['type'] =$attachment['mimeType'];
$mail['attachments'][$key]['content'] = chunk_split(base64_encode(file_get_contents($attachment['filePath']))); ;
}