Oulina Art

$text = "foo\nbar\nfoobar";
$textlines = explode("\n", $text);

$textrun = $section->addTextRun();
$textrun->addText(array_shift($textlines));
foreach($textlines as $line) {
    $textrun->addTextBreak();
    // maybe twice if you want to seperate the text
    // $textrun->addTextBreak(2);
    $textrun->addText($line);
}