Parse a HTML page to extract the fields into an array like : value=>option_text

Question

Current scenario :

I'm loading a html page into a var with DomDocument

$dom    = new DOMDocument('1.0', 'UTF-8');  
@$dom->loadHTML($html);

and I need to parse 3 lists of option fields . The HTML looks like this :

<li>
    <select id="advertiser" name="advertiser[]" multiple="multiple" autocomplete="off">                                                                         <option value="35" >Website Adv 1</option>
    <option value="36" >Website Adv 1</option>                                                                                                          <option value="41" >Website Adv 1</option>
    <option value="45" >Website Adv 1</option>
    </select>
</li>

Now I found this code on Stack but it does not work ..

$xpath = new DOMXpath($dom);
$options = $xpath->query("*/select[@name='advertiser[]']/option");
foreach ($options as $option) {
  $optionValue = $option->getAttribute('value');
  $optionContent = $option->nodeValue;
  echo "$optionValue and $optionContent\n";
}

The question remains :

How do I parse a HTML page to extract the fields of an option select, into an array like : value=>option_text

I would think you'd want //select[@name... instead of */select — Phil
– Phil, Commented Oct 14, 2013 at 3:17

Javier Rico · Accepted Answer · 2013-10-13 18:10:41Z

1

The code you posted should work. You can change the code by this

$dom    = new DOMDocument('1.0', 'UTF-8');  
$dom->loadHTML($html);

$xpath = new DOMXpath($dom);
$options = $xpath->query("*/select[@name='advertiser[]']/option");
$result = array();
foreach ($options as $option) {
  $optionValue = $option->getAttribute('value');
  $optionContent = $option->nodeValue;
  $result[$optionValue] = $optionContent;
}

print_r($result);

to load into $result array the items like you want to.

The result should be:

Array
(
    [35] => Website Adv 1
    [36] => Website Adv 1
    [41] => Website Adv 1
    [45] => Website Adv 1
)

answered Oct 13, 2013 at 18:10

Javier Rico

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4 Comments

Liviu ZeJah Over a year ago

thank you . I think there is an invisible error around ... yes, this works great .. I think maybe the html page is malformed or something .. the $html is the result / return of a cURL ... i don't get it .. the html is there, the results are empty ..

Javier Rico Over a year ago

As php page says (us2.php.net/manual/en/domdocument.loadhtml.php) the loadHtml function returns a boolean to check if it´s a valid HTML string. You can check it.

Liviu ZeJah Over a year ago

So if there is anything else before the select input, any kind of data, like other tags or text .. the Xpath does not work ...

Liviu ZeJah Over a year ago

Can this be done in some other way ? how do I parse the code by nodes ?

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