/**
* Send email
*
* This is based on {@see wp_mail()} which is in turn based on PHP's
* built-in mail() function. This is typically called from the overriden
* version of {@see wp_mail()} below.
*
* @param string|array $to Array or comma-separated list of email addresses to send message.
* @param string $subject Email subject
* @param string $message Message contents
* @param string|array $headers Optional. Additional headers.
* @param string|array $attachments Optional. Files to attach.
*
* @return bool Whether the email contents were sent successfully.
*/
function send_mail($to, $subject, $message, $headers = '', $attachments = array())
{
// Compact the input, apply the filters, and extract them back out
extract(apply_filters('wp_mail', compact('to', 'subject', 'message', 'headers', 'attachments')));
global $phpmailer;
if (!is_object($phpmailer) || !is_a($phpmailer, 'Message')) {
$phpmailer = new Message();
}
$cc = array();
$bcc = array();
// Headers
if (empty($headers)) {
$headers = array();
} else {
if (!is_array($headers)) {
// Explode the headers out, so this function can take both
// string headers and an array of headers.
$tempheaders = explode("\n", str_replace("\r\n", "\n", $headers));
} else {
$tempheaders = $headers;
}
$headers = array();
// If it's actually got contents
if (!empty($tempheaders)) {
// Iterate through the raw headers
foreach ((array) $tempheaders as $header) {
if (false === strpos($header, ':')) {
if (false !== stripos($header, 'boundary=')) {
$parts = preg_split('/boundary=/i', trim($header));
$boundary = trim(str_replace(array("'", '"'), '', $parts[1]));
}
continue;
}
// Explode them out
list($name, $content) = explode(':', trim($header), 2);
// Cleanup crew
$name = trim($name);
$content = trim($content);
switch (strtolower($name)) {
// Mainly for legacy -- process a From: header if it's there
case 'from':
if (false !== strpos($content, '<')) {
// So... making my life hard again?
$from_name = substr($content, 0, strpos($content, '<') - 1);
$from_name = str_replace('"', '', $from_name);
$from_name = trim($from_name);
$from_email = substr($content, strpos($content, '<') + 1);
$from_email = str_replace('>', '', $from_email);
$from_email = trim($from_email);
} else {
$from_email = trim($content);
}
break;
case 'content-type':
if (false !== strpos($content, ';')) {
list($type, $charset) = explode(';', $content);
$content_type = trim($type);
if (false !== stripos($charset, 'charset=')) {
$charset = trim(str_replace(array('charset=', '"'), '', $charset));
} elseif (false !== stripos($charset, 'boundary=')) {
$boundary = trim(str_replace(array('BOUNDARY=', 'boundary=', '"'), '', $charset));
$charset = '';
}
} else {
$content_type = trim($content);
}
break;
case 'cc':
$cc = array_merge((array) $cc, explode(',', $content));
break;
case 'bcc':
$bcc = array_merge((array) $bcc, explode(',', $content));
break;
default:
// Add it to our grand headers array
$headers[trim($name)] = trim($content);
break;
}
}
}
}
// Empty out the values that may be set
$phpmailer->clearBcc();
$phpmailer->clearCc();
$phpmailer->clearReplyTo();
$phpmailer->clearTo();
// From email and name
// If we don't have a name from the input headers
if (!isset($from_name)) {
$from_name = 'App Engine';
}
/* If we don't have an email from the input headers default to wordpress@$sitename
* Some hosts will block outgoing mail from this address if it doesn't exist but
* there's no easy alternative. Defaulting to admin_email might appear to be another
* option but some hosts may refuse to relay mail from an unknown domain. See
* http://trac.wordpress.org/ticket/5007.
*/
if (!isset($from_email)) {
$from_email = get_option('appengine_email', false);
if (!$from_email) {
$from_email = get_default_email();
}
}
// Plugin authors can override the potentially troublesome default
// TODO: Currently, App Engine doesn't support a from name. We should
// come back to this and fix it if/when it does
//$phpmailer->setSender( apply_filters( 'wp_mail_from_name', $from_name ) . " <" . apply_filters( 'wp_mail_from', $from_email ) . ">");
$phpmailer->setSender(apply_filters('wp_mail_from', $from_email));
// Set destination addresses
if (!is_array($to)) {
$to = explode(',', $to);
}
foreach ((array) $to as $recipient) {
try {
// Break $recipient into name and address parts if in the format "Foo <*****@*****.**>"
$recipient_name = '';
if (preg_match('/(.*)<(.+)>/', $recipient, $matches)) {
if (count($matches) == 3) {
$recipient_name = $matches[1];
$recipient = $matches[2];
}
}
$phpmailer->addTo($recipient, $recipient_name);
} catch (Exception $e) {
syslog(LOG_DEBUG, 'Mail error: ' . $e->getMessage());
continue;
}
}
// Add any CC and BCC recipients
$cc = array_filter($cc);
$bcc = array_filter($bcc);
if (!empty($cc)) {
foreach ((array) $cc as $recipient) {
try {
// Break $recipient into name and address parts if in the format "Foo <*****@*****.**>"
$recipient_name = '';
if (preg_match('/(.*)<(.+)>/', $recipient, $matches)) {
if (count($matches) == 3) {
$recipient_name = $matches[1];
$recipient = $matches[2];
}
}
$phpmailer->addCc($recipient, $recipient_name);
} catch (Exception $e) {
syslog(LOG_DEBUG, 'Mail error: ' . $e->getMessage());
continue;
}
}
}
if (!empty($bcc)) {
foreach ((array) $bcc as $recipient) {
try {
// Break $recipient into name and address parts if in the format "Foo <*****@*****.**>"
$recipient_name = '';
if (preg_match('/(.*)<(.+)>/', $recipient, $matches)) {
if (count($matches) == 3) {
$recipient_name = $matches[1];
$recipient = $matches[2];
}
}
$phpmailer->addBcc($recipient, $recipient_name);
} catch (Exception $e) {
syslog(LOG_DEBUG, 'Mail error: ' . $e->getMessage());
continue;
}
}
}
// Set Content-Type and charset
// If we don't have a content-type from the input headers
if (!isset($content_type)) {
$content_type = 'text/plain';
}
$content_type = apply_filters('wp_mail_content_type', $content_type);
// Set whether it's plaintext, depending on $content_type
if ('text/html' == $content_type) {
$phpmailer->setHtmlBody($message);
} else {
$phpmailer->setTextBody($message);
}
$phpmailer->setSubject($subject);
// If we don't have a charset from the input headers
if (!isset($charset)) {
$charset = get_bloginfo('charset');
}
// Set the content-type and charset
//$phpmailer->charsset = apply_filters( 'wp_mail_charset', $charset );
// Set custom headers
if (!empty($headers)) {
if (isset($headers['MIME-Version'])) {
unset($headers['MIME-Version']);
}
$phpmailer->addHeaderArray($headers);
if (false !== stripos($content_type, 'multipart') && !empty($boundary)) {
$phpmailer->addHeaderArray('Content-Type', sprintf("%s;\n\t boundary=\"%s\"", $content_type, $boundary));
}
}
if (!empty($attachments)) {
foreach ($attachments as $attachment) {
try {
$name = basename($attachment);
$data = file_get_contents($attachment);
$phpmailer->addAttachment($name, $data);
} catch (Exception $e) {
syslog(LOG_DEBUG, 'Mail error: ' . $e->getMessage());
continue;
}
}
}
// Send!
$phpmailer->send();
return true;
}