/** * Codifica um assunto de e-mail * @param string $subject Assunto a ser codificado * @param string $charset Nome do charset * @return string */ function encode_subject($subject, $charset) { // Utiliza codificacao quoted-printed (Q) if (function_exists('quoted_printable_encode')) { $subject = quoted_printable_encode($subject); return '=?'.$charset.'?Q?'.$subject.'?='; } elseif (function_exists('imap_8bit')) { $subject = imap_8bit($subject); return '=?'.$charset.'?Q?'.$subject.'?='; // Utiliza a codificacao base64 (B) } else { $subject = base64_encode($subject); return '=?'.$charset.'?B?'.$subject.'?='; } }