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+--- Thread: SMTP library - _prep_q_encoding() function (/showthread.php?tid=59690)
SMTP library - _prep_q_encoding() function - El Forum - 11-05-2013
[eluser]Unknown[/eluser]
I am using Codeigniter SMTP email library to send emails, with following config values:
Code:
$config = array(
'protocol' => 'smtp',
'smtp_host' => 'ssl://email-smtp.us-east-1.amazonaws.com',
'smtp_user' => 'SMTP USERNAME',
'smtp_pass' => 'SMTP PASSWORD',
'smtp_port' => 465,
'mailtype' => 'html',
'newline' => "\r\n",
'crlf' => "\r\n"
);Everything works fine, till I use an email subject which is more than 62 characters in length.
The _prep_q_encoding() function performs "Q Encoding" on the subject. This function divides the subject into different lines ensuring that none of the lines exceed 76 characters including the 7 extra characters "=??Q??=" and the charset. At the end of each line, the crlf [which is "\r\n"] is appended and then each line is wrapped by the extra characters.
Code:
$str = trim(preg_replace('/^(.*)$/m', ' =?'.$this->charset.'?Q?$1?=', $str));The above statement creates a problem as '?=' is added after '\r' [from crlf] of each line, resulting in transaction failed due to illegal header.
Can someone please explain me, what exactly is happening and how can I solve the problem?
Thanks,
Anuj