Ticket #4318: PN_mailfix.php

<?php
/*
Plugin Name: Post Notification Mailfix
Plugin URI: http://xn--strbe-mva.de/post-notification/
Description: Fixes problems sending HTML-mails - Only for WP 2.2.x!
Author: Moritz Str&uuml;be
Version: 1.1.3
License: GPL
Author URI: http://xn--strbe-mva.de
Min WP Version: 2.2

*/


if ( (!function_exists('wp_mail')) && class_exists('PHPMailer') ) :
function wp_mail($to, $subject, $message, $headers = '') {
        global $phpmailer;

        
        if ( !is_object( $phpmailer ) ) {
                require_once(ABSPATH . WPINC . '/class-phpmailer.php');
                require_once(ABSPATH . WPINC . '/class-smtp.php');
                $phpmailer = new PHPMailer();
        }

        $mail = compact('to', 'subject', 'message', 'headers');
        $mail = apply_filters('wp_mail', $mail);
        extract($mail);

        if ( $headers == '' ) {
                $headers = "MIME-Version: 1.0\n" .
                        "From: " . apply_filters('wp_mail_from', "wordpress@" . preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME']))) . "\n" . 
                        "Content-Type: text/plain; charset=\"" . get_option('blog_charset') . "\"\n";
        }

        $phpmailer->ClearAddresses();
        $phpmailer->ClearCCs();
        $phpmailer->ClearBCCs();
        $phpmailer->ClearReplyTos();
        $phpmailer->ClearAllRecipients();
        $phpmailer->ClearCustomHeaders();

        $phpmailer->FromName = "WordPress";
        $phpmailer->AddAddress("$to", "");
        $phpmailer->Subject = $subject;
        $phpmailer->Body    = $message;
        $phpmailer->IsHTML(false);
        $phpmailer->IsMail(); // set mailer to use php mail()

        do_action_ref_array('phpmailer_init', array(&$phpmailer));

        $mailheaders = (array) explode( "\n", $headers );
        foreach ( $mailheaders as $line ) {
                $header = explode( ":", $line );
                switch ( trim( $header[0] ) ) {
                        case 'From':
                                $from = trim( str_replace( '"', '', $header[1] ) );
                                if ( strpos( $from, '<' ) ) {
                                        $phpmailer->FromName = str_replace( '"', '', substr( $header[1], 0, strpos( $header[1], '<' ) - 1 ) );
                                        $from = trim( substr( $from, strpos( $from, '<' ) + 1 ) );
                                        $from = str_replace( '>', '', $from );
                                } else {
                                        $phpmailer->FromName = $from;
                                }
                                $phpmailer->From = trim( $from );
                                break;
                        case 'Content-Type':
                                $contentparam = explode(' ', trim($header[1]));
                                $phpmailer->ContentType = substr(trim($contentparam[0]), 0, -1); //Remove ;
                                if(!(strpos($contentparam[1], 'charset') === false)){
                                        $charset = explode('=', $contentparam[1]);
                                        $phpmailer->CharSet = str_replace( '"', '', $charset[1]);
                                }
                                break;
                        default:
                                if ( $line != '' && $header[0] != 'MIME-Version' && $header[0] != 'Content-Type' )
                                        $phpmailer->AddCustomHeader( $line );
                                break;
                }
        }

        $result = @$phpmailer->Send();

        return $result;
}
endif;



?>