Description:
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---
From manual page: http://www.php.net/function.mail
---
Fix of https://bugs.php.net/bug.php?id=68776 in php-5.6.10 pointed rather important miss:
Internet provides many _incorrect_ (!) examples of a widely spread task sending of multi-part emails (usually — attached files), but official documentation doesn't provide the correct solution.

Providing slightly modified verified example from Internet, which correctly sends mails with attached files with php-5.6.11.

Test script:
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<?php
…
// Common header:
$mail_header = "From: ".$from_name." <".$from_mail.">\r\n";
$mail_header .= "Reply-To: ".$replyto."\r\n";
$mail_header .= "MIME-Version: 1.0\r\n";
$mail_header .= "Content-Type: multipart/mixed; boundary=\"".$uid."\"\r\n\r\n";
// Multi-part body:
$mail_body = "--".$uid."\r\n";
$mail_body .= "Content-type:text/plain; charset=iso-8859-1\r\n";
$mail_body .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
$mail_body .= $message."\r\n\r\n";
$mail_body .= "--".$uid."\r\n";
$mail_body .= "Content-Type: application/octet-stream; name=\"".$filename."\"\r\n";
$mail_body .= "Content-Transfer-Encoding: base64\r\n";
$mail_body .= "Content-Disposition: attachment; filename=\"".$filename."\"\r\n\r\n";
$mail_body .= $content."\r\n\r\n";
$mail_body .= "--".$uid."--";
// Really necessary parametr:
$envelope = "-f" . $from_mail;
//And sending message itself:
mail($mailto, $subject, $mail_body, $mail_header, $envelope);

?>

Expected result:
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I expect to see the quoted script (or some similiar) in list of examples in http://php.net/manual/en/function.mail.php

Actual result:
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But now I had to search web following error string:

Jul 15 13:20:13 web httpd: PHP Warning:  mail(): Multiple or malformed newlines found in additional_header in /var/www/project/inc/mail.inc on line 47

Finding mostly old, unsupported, incorrect and incompatible with php-5.6.10+ examples.