DOMDocument::saveXML返回值为空字符串

        $doc = new DOMDocument('1.0');	// we want a nice output	$doc->formatOutput = true;	$root = $doc->createElement('book');	$root = $doc->appendChild($root);	$title = $doc->createElement('title');	$title = $root->appendChild($title);	$text = $doc->createTextNode('This is the title');	$text = $title->appendChild($text);			echo "Saving all the document:\n";		$xmlContent = $doc->saveXML();		var_dump($xmlContent);

回复讨论(解决方案)

请在文本方式下查看

Saving all the document:string(72) "  "

明白了，Thanks!