使用dom php从给定URL获取元素

使用php构建MTDB，需要从URL中刮取特定标记

要从url获取的标记

    vars.disqus = '';
    vars.lists = [];
    vars.titleId = '35079';
    vars.trailersPlayer = 'default';
    vars.userId = '907791';
    vars.title = {"id":35079,"title":"Family Vacation","trailer":35097.flv,"timing":0.50sec}

我需要

"id":35079,"title":"Family Vacation","trailer":35097.flv,"timing":0.50sec

我的代码：

$html = 'myurl';

libxml_use_internal_errors(TRUE); $dom = new DOMDocument; $dom->loadHTMLFile($html); libxml_clear_errors();

$xp = new DOMXpath($dom); $nodes = $xp->query('//script[@\'id','trailer','title');

echo $nodes->item(0)->nodeValue;

“标记”不是HTML格式，它看起来像一些javascript代码~

要解析这些字符串，只需通过正则表达式

preg_match('/title\s*=\s*\{([^}]+)}/', $str, $matches);
var_dump($matches[1]);

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非常感谢。我可以在哪一行集成此代码？