How can i upload images to mail using PHP form - php

Question

How can I upload to send multiple images via PHP form without using SMTP or login to a spesific Email Account?
My code only works with one input of File type and I want to use 4 inputs to be able to show all 4 images in the mail.
When I try to add more than one File input it gets 'Error in Email sending'.
What should i do?
Here is my code:
<form action="sendmail.php" method="post" name="mainform" enctype="multipart/form-data">
<table width="500" border="0" cellpadding="5" cellspacing="5">
<tr>
<th>Attach Your File</th>
<td><input name="attachment" type="file"></td>
</tr>
<tr>
<th>Attach Your File</th>
<td><input name="attachment2" type="file"></td>
</tr>
<tr>
<th>Attach Your File</th>
<td><input name="attachment3" type="file"></td>
</tr>
<tr>
<th>Attach Your File</th>
<td><input name="attachment4" type="file"></td>
</tr>
<tr>
<td colspan="2" style="text-align:center;"><input type="submit" name="Submit" value="Send"><input type="reset" name="Reset" value="Reset"></td>
</tr>
</table>
</form>
<?php
$to = $_POST['toEmail'];
$fromEmail = $_POST['fieldFormEmail'];
$fromName = $_POST['fieldFormName'];
$subject = $_POST['fieldSubject'];
$message = $_POST['fieldDescription'];
/* GET File Variables */
$tmpName = $_FILES['attachment']['tmp_name'];
$fileType = $_FILES['attachment']['type'];
$fileName = $_FILES['attachment']['name'];
/* Start of headers */
$headers = "From: $fromName";
if (file($tmpName)) {
/* Reading file ('rb' = read binary) */
$file = fopen($tmpName,'rb');
$data = fread($file,filesize($tmpName));
fclose($file);
/* a boundary string */
$randomVal = md5(time());
$mimeBoundary = "==Multipart_Boundary_x{$randomVal}x";
/* Header for File Attachment */
$headers .= "\nMIME-Version: 1.0\n";
$headers .= "Content-Type: multipart/mixed;\n" ;
$headers .= " boundary=\"{$mimeBoundary}\"";
/* Multipart Boundary above message */
$message = "This is a multi-part message in MIME format.\n\n" .
"--{$mimeBoundary}\n" .
"Content-Type: text/plain; charset=\"iso-8859-1\"\n" .
"Content-Transfer-Encoding: 7bit\n\n" .
$message . "\n\n";
/* Encoding file data */
$data = chunk_split(base64_encode($data));
/* Adding attchment-file to message*/
$message .= "--{$mimeBoundary}\n" .
"Content-Type: {$fileType};\n" .
" name=\"{$fileName}\"\n" .
"Content-Transfer-Encoding: base64\n\n" .
$data . "\n\n" .
"--{$mimeBoundary}--\n";
}
$flgchk = mail ("$to", "$subject", "$message", "$headers");
if($flgchk){
echo "A email has been sent to: $to";
}
else{
echo "Error in Email sending";
}
?>

Answer 1

It's not very well to post a big bunch of code and ask for analyzing it. ;-)
Generally: Try to write the data stream you want to send to a file and then analyze it - manually or with some kind of mail tool (could even be a mail client which issue warnings). Try to construct manually a valid email with multiple attachments and then try to reproduce the format with your code.
In your case: I see an issue which is not directly related to "issue with multiple files" but an issue about the content type (thus I'm not writing a comment but an answer): charset iso-8859-1 should not be used with "7bit" but with "8bit" or "quoted-printable" encoding.
EDIT1: Fix bad english.
EDIT2: Read your code again. I don't see any \r for CRLF line endings.