php send_mail 函数

    function Send_Mail( $to_addr, $from_addr, $subject, $message ) {
        $encode  = 'UTF-8';
        mb_language( "Japanese" );
        mb_internal_encoding($encode);

        $headers = 'MIME-Version: 1.0' . "\r\n"; 
        $headers  .= 'Content-type: text/plain ; charset=utf-8' . "\r\n";
        $headers  .= "From: =?ISO-2022-JP?B?" . base64_encode( mb_convert_encoding( $from_addr, "ISO-2022-JP", $encode ) ) . "?=<" . $from_addr . ">";

        //if ( !mb_send_mail( "<" . $to_addr . ">", $subject, mb_convert_kana( $message, "KHV" ), $headers ) ) {
        if ( !mail( "<" . $to_addr . ">", $subject, mb_convert_kana( $message, "KHV" ), $headers ) ) {
            return false;
        } else {
            return true;
        }
    }
//附件 是 以html发送的带 图片的邮件