php读取xml出现 错误：“parser error : CData section not finished”问题

原因是该XML上有一些无效字符。试试下面的代码

$url    = 'http://noticias.perfil.com/feed/';
$html   = file_get_contents($url);
$invalid_characters = '/[^\x9\xa\x20-\xD7FF\xE000-\xFFFD]/';
$html = preg_replace($invalid_characters, '', $html);

$xml = simplexml_load_string($html);

//test purpose part 
$encode = json_encode($xml);
$decode = json_decode($encode, true);
print_r($decode);

原答案：https://stackoverflow.com/questions/44250530/how-to-read-this-xml-get-parser-error-cdata-section-not-finished