解析多个结果页面

Question

I am trying to parse a website to obtain aeronautical information. Here is the link to the website

NOTAMS

The problem is the script shows only the first 20 entries ( a single pages worth) from the the entire result set (38) and I am unable to iterate through others pages, as the next url doesn't have any page information. here is my code:

$DOM = new DOMDocument();
$DOM->loadHTMLFile($url);


$selector = new DOMXPath($DOM);
$elements = $selector->query('//td[@headers="notam"]'); 


if (!is_null($elements)) {
  foreach ($elements as $element) {
    echo "<br/>";//[". $element->nodeName. "]";
    $nodes = $element->childNodes;
    foreach ($nodes as $node) {
       $display = $node->nodeValue;
    if($display <> NULL){
            echo $node->nodeValue. "<br>";
    }
     }
   }
 }

Answer 1

I can't really see the problem with iterating in the collection... If you add page=x in the query string, it will definitely work. Could you give us some more details?

Example page 1 Example page 2 (with ...?page=2..., the rest of the url does not change)

As seen in example 1, you can use page=1 in your first url, which makes your code even easier.

Depending on your service requirements, I would also consider using Kimonolabs website to api service, so you would end up querying a simple json api, using a library such as Guzzle to make your code maintainable and easy to read.