XML TRIM

<?php
session_start();
include("../../include/connect.php");

if (strlen($_POST['cmbMes']) == 1) {
    $_POST['cmbMes'] = "0" . $_POST['cmbMes'];
}
$competencia = $_POST['cmbAno'] . "-" . $_POST['cmbMes'];
$where = "IF(rps_data <> '', DATE_FORMAT(rps_data,'%Y-%m') = '$competencia', DATE_FORMAT(datahoraemissao,'%Y-%m') = '$competencia')";

$sql = mysql_query("SELECT * FROM notas WHERE codemissor = '" . $_SESSION['codempresa'] . "' AND $where");
if (mysql_num_rows($sql) > 0) {
    $new = new XMLWriter();
    $new->openMemory();
    $new->startDocument("1.0", "ISO-8859-1");
        $new->setIndent(true);
            $new->startElement("exportacao");
            while ($nota = mysql_fetch_object($sql)) {
                $new->startElement("nota");
                $new->writeElement("numero", $nota->numero);
                $new->writeElement("codverificacao", $nota->codverificacao);
                $new->writeElement("rps_numero", $nota->rps_numero);
                $new->writeElement("rps_data", ($nota->rps_data));
                $new->writeElement("datahoraemissao", $nota->datahoraemissao);
                $new->writeElement("tomador_nome", ($nota->tomador_nome));
                $new->writeElement("tomador_cnpjcpf", $nota->tomador_cnpjcpf);
                $new->writeElement("tomador_inscrmunicipal", $nota->tomador_inscrmunicipal);
                $new->writeElement("tomador_logradouro", $nota->tomador_logradouro);
                $new->writeElement("tomador_numero", $nota->tomador_numero);
                $new->writeElement("tomador_complemento", $nota->tomador_complemento);
                $new->writeElement("tomador_bairro",($nota->tomador_bairro);
                $new->writeElement("tomador_cep", $nota->tomador_cep);
                $new->writeElement("tomador_municipio", $nota->tomador_municipio);
                $new->writeElement("tomador_uf", $nota->tomador_uf);
                $new->writeElement("tomador_email", $nota->tomador_email);
                $new->writeElement("valortotal", $nota->valortotal);
                $new->writeElement("deducoes", $nota->valordeducoes);
                $new->writeElement("acrescimo", $nota->valoracrescimos);
                $new->writeElement("basecalculo", $nota->basecalculo);
                $new->writeElement("aliqpercentual", $nota->aliq_percentual);
                $new->writeElement("valoriss", $nota->valoriss);
                $new->writeElement("issretido", $nota->issretido);
                $new->writeElement("cofins", $nota->cofins);
                $new->writeElement("irrf", $nota->valorirrf);
                $new->writeElement("contribuicaosocial", $nota->contribuicaosocial);
                $new->writeElement("pispasep", $nota->pispasep);
                $new->writeElement("inss", $nota->valorinss);
                $new->writeElement("totalretencoes", $nota->total_retencao);
                $new->writeElement("estado", $nota->estado);
                $new->writeElement("discriminacao", $nota->discriminacao);
                $new->writeElement("observacoes", $nota->observacao);
                $new->writeElement("motivocancelamento", $nota->motivocancelamento);
                $new->startElement("servicos");
                $sqlServicos = mysql_query("
                    SELECT
                        notas_servicos.basecalculo,
                        notas_servicos.iss,
                        notas_servicos.issretido,
                        notas_servicos.discriminacao,
                        notas_servicos.codservico,
                        servicos.descricao
                    FROM
                        notas_servicos
                    INNER JOIN
                        servicos ON notas_servicos.codservico = servicos.codigo
                    WHERE
                        notas_servicos.codnota = '$nota->codigo'
                ");
                while ($servico = mysql_fetch_object($sqlServicos)) {
                    $new->startElement("servico");
                    $new->writeElement("codigo", $servico->codservico);
                    $new->writeElement("descricao", utf8_encode($servico->descricao));
                    $new->writeElement("basecalculo", $servico->basecalculo);
                    $new->writeElement("valoriss", $servico->iss);
                    $new->writeElement("issretido", $servico->issretido);
                    $new->writeElement("discriminacao", utf8_encode($servico->discriminacao));
                    $new->endElement();
                }
                $new->endElement();
            $new->endElement();
        }
        $new->endElement();
    $new->endDocument();
    $file = fopen("../xml/notas.xml", "w+");
    fwrite($file, fulltrim( $new->outputMemory()) );
    fclose($file);
} else {
    echo "<p align=\"center\">Nenhuma nota encontrada</p>";
}

function fulltrim( $str )
{
    $str = preg_split( "/\s+/", trim( $str ) );
    $str = implode( " ", $str );
    return $str;
}