我用了一个方式去抓一列something…之后我要解析成xml的格式
当然是可行的，但时不及会出错 于是我写下了

try
{
    $sports = new SimpleXMLElement($parsedJson);
}
catch (Exception $e)
{

  Print_r($e)
}

结果为

Warning: SimpleXMLElement::__construct(): Entity: line 1: parser error : Space required after the Public Identifier in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): ^ in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): Entity: line 6: parser error : Opening and ending tag mismatch: hr line 5 and BODY in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): ^ in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): Entity: line 6: parser error : Opening and ending tag mismatch: BODY line 4 and HTML in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): ^ in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): Entity: line 7: parser error : Premature end of data in tag HEAD line 2 in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): ^ in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): Entity: line 7: parser error : Premature end of data in tag HTML line 2 in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): in /home/ns/www/admin/gamble/baseball.php on line 121 Warning: SimpleXMLElement::__construct(): ^ in /home/ns/www/admin/gamble/baseball.php on line 121

我想到我之前用 curl 抓东西时，用过 json_decode
当时我用这样的方式来让程序自动重抓

do{
      $data = @json_decode(file_get_contents($url), true);
}while($data == false);

我想请教的是
如果我的 new SimpleXMLElement 失败了，我也可以用类似的方式作吗？

Do
{
    抓资料;
    $data=@json_decode(something);
    $xml = new SimpleXMLElement($data);
}while($xml == false);

如果 new SimpleXMLElemen 发生以上的错误，$xml 会 等于 false吗？
求解