Question

我编写此代码来解析craigslist网站的标题。

<?php  

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://craigslist.org/about/sites");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)');
$cl = curl_exec($ch);

$dom = new DOMDocument('1.0');
@$dom->loadHTML($cl);

$title = $dom -> getElementById("logo");
echo $title->nodeValue;

?>

但它显示错误：

Notice: Trying to get property of non-object in C:\xampp\htdocs\products\index.php on line 13

我在哪里搞砸了？

Answer 1

这有效：

 <?php
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_URL, "http://craigslist.org/about/sites");
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)');
 curl_setopt($ch, CURLOPT_FOLLOWLOCATION,1);
 $cl = curl_exec($ch);

 $dom = new DOMDocument('1.0');
 @$dom->loadHTML($cl);

 $title = $dom -> getElementById("logo");
 echo $title->nodeValue;

我使用curl_getinfo和您的初始代码来查看有关HTTP响应的更多信息，并获得302重定向作为HTTP响应代码。您可以通过设置CURLOPT_FOLLOWLOCATION选项跟随cURL重定向。

DOMDocument不从CURL返回对象

1 个答案: