需要帮助才能找到正确的xpath

Question

我有以下这样的天气site

我需要使用Xpath但是返回查询！

  

我正在使用此xPath并且必须返回2行

$xpath->query('/html/body/table[3]/tbody/tr/td/table/tbody/tr/td[2]/p/table/tbody/tr/td/font/div/center/table/tbody/tr[1]/td[1]/font/font/b');

但不会返回任何事情：

请完成此xpath

我正在使用此鳕鱼对接显示错误

  

捕获致命错误：类DOMNodeList的对象不可能   在第23行的/home/mysite/curl.php中转换为字符串

<?php
$url="http://www.irimo.ir/farsi/current/index.asp?station=40770";
function file_get_contents_curl($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_URL, $url);
    $data = curl_exec($ch);
    curl_close($ch);
    return $data;
}

$dom = new DomDocument();
@$dom->loadHTML($allcont);
$xpath = new DomXPath($dom);

$return = $xpath->query('/html/body/table[3]/tbody/tr/td/table/tbody/tr/td[2]/p/table/tbody/tr/td/font/div/center/table/tbody/tr[3]/td/font/b');

echo $return;
echo $xpath;

?>

Answer 1

尝试

$xpath->query('/html/body/table[3]/tbody/tr/td/table/tbody/tr/td[2]/p/table/tbody/tr/td/font/div/center/table/tbody/tr[3]/td/font/b');