PHP DOM getElementsbytagname（）getElementById（）

Question

I'm working in PHP and looking at the DOM to parse html and find certain information on the page.

I have code working well using the getElementsbyTagName():

foreach ($dom->getElementsByTagName('div') as $node) {
          $array_data[ ] = $node->nodeValue;
        }

print_r($array_data);

On the page I'm looking at there are a lot of <div>'s. The div i'm interested in has a unique id on the page. I thought I could select this specific information By updating my code to look at the id as below:

foreach ($dom->getElementById('tree___34LHOENOP7') as $node) {
          $array_data[ ] = $node->nodeValue;
        }

print_r($array_data);

This code does not seem to work. The html:

<div id="tree___34LHOENOP7" style="margin-top: 5px; font-family: Verdana, Arial, sans-serif; height: 528px; overflow: auto;">
<ul><li style="list-style-type:none;"><span style="cursor:pointer;color:#D99F00;" onclick="prtv_C_E(this,'ExpandableRegionClickHandler','',2,true);(2,this);">UK</span><img src="https://images... " title="re-centre map here" onclick="ExpandableRegionClickHandler(2,this);" style="display:inline;margin-left:7px;cursor:pointer;"><ul style="display:block;"><li style="list-style-type:none;"><span style="cursor:pointer;color:#D99F00;" onclick="prtv_C_E(this,'ExpandableRegionClickHandler','',59,true);ExpandableRegionClickHandler(59,this);">Channel Islands</span><img src="https://images... " title="re-centre map here" onclick="ExpandableRegionClickHandler(59,this);" style="display:none;margin-left:7px;cursor:pointer;"><ul style="display:none;"><li style="list-style-image:url('http://images…’);"><a class="MapEventName" href="http://www... /guernsey" onclick="EventSpanClick(1439,this);" onmouseover="EventSpanMouseOver(1439,this);" onmouseout="EventSpanMouseOut(1439,this);">Guernsey</a></li>

Answer 1

Hope this will help you out, DOMDocument::getElementById will return DOMElement Object.

$domObject= new DOMDocument();
$domObject->loadHTML($source);//put your complete source html string here
$result=$domObject->getElementById("tree___34LHOENOP7");//this will output DOMElement Object
print_r($result->nodeValue);