PHP DomNode nodeValue > &lt issue

Question

I am trying to set the nodeValue of an element like this:

$element->nodeValue = get_include_contents(DIR_APP . Config::getParam("layout_dir").$itemTemplateFilePath);

get_include_contents function returns an html which look like this:

<li>Person <b>{{ $name }}</b> is  <span>{{ $age }}</span> years old. <a href="" data-id="{{ $id }}" data-event="Event: 'onclick', Action: 'deleteThePerson'">X</a></li>

The problem is that the < and > gets replaced by the < and >. How to fix that? How to set inner html of an element that contains other html?

Dekel · Accepted Answer · 2017-01-02 22:57:50Z

1

If you want to add html block into your DOM tree you should use the appendChild and not the nodeValue method.

The problem is that you need first to create a DON Node.

Here is a trick on how to do this:

// This will be the original doc we work on.
$doc1 = new DOMDocument();
$doc1->loadHTML("<html><body><p></p></body></html>");


$element = $doc1->getElementsByTagName('p')[0];

// Here is the trick - we create a new document
$doc2 = new DOMDocument();
$s = '<li>Person <b>{{ $name }}</b> is  <span>{{ $age }}</span> years old. <a href="" data-id="{{ $id }}" data-event="Event: \'onclick\', Action: \'deleteThePerson\'">X</a></li>';
// and load the html we need into that document
$doc2->loadHTML($s);

// Now we can append the node from `doc2` into `doc1`
$element->appendChild($doc1->importNode($doc2->getElementsByTagName('li')[0], true));

echo $doc1->saveHTML();

The important thing that you need to remember is that you must use the importNode method in order to move that node from doc2 into doc1. Only after you imported that node - you can use the appendChild function.

The output in the above example will be:

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body><p><li>Person <b>{{ $name }}</b> is  <span>{{ $age }}</span> years old. <a href="" data-id="{{ $id }}" data-event="Event: 'onclick', Action: 'deleteThePerson'">X</a></li></p></body></html>

answered Jan 2, 2017 at 22:57

Dekel

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8 Comments

durisvk Over a year ago

it says: ARGUMENT 1 PASSED TO DOMNODE::APPENDCHILD() MUST BE AN INSTANCE OF DOMNODE, BOOLEAN GIVEN

durisvk Over a year ago

when I do this

public static function setInnerHTML(\DOMDocument $dom, \DOMNode &$element, $html_string) {         $dom2 = new \DOMDocument();         $dom2->loadHTML($html_string);          $element->appendChild($dom->importNode($dom2->firstChild));     }

Dekel Over a year ago

I'm almost sure you should use &$dom and also node the second parameter of the importNode method.

durisvk Over a year ago

ARGUMENT 1 PASSED TO DOMNODE::APPENDCHILD() MUST BE AN INSTANCE OF DOMNODE, BOOLEAN

durisvk Over a year ago

I think the $dom2->loadHTML() fails but doesn't give an error cause $dom2->firstChild is null or false

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