How to get innerHTML of DOMNode with PHP?

Sometimes, we want to get innerHTML of DOMNode with PHP.

In this article, we’ll look at how to get innerHTML of DOMNode with PHP.

How to get innerHTML of DOMNode with PHP?

To get innerHTML of DOMNode with PHP, we can call saveHTML.

For instance, we write

<?php 
function DOMinnerHTML(DOMNode $element) 
{ 
    $innerHTML = ""; 
    $children  = $element->childNodes;

    foreach ($children as $child) 
    { 
        $innerHTML .= $element->ownerDocument->saveHTML($child);
    }

    return $innerHTML; 
} 

$dom= new DOMDocument(); 
$dom->preserveWhiteSpace = false;
$dom->formatOutput       = true;
$dom->load($html_string); 

$domTables = $dom->getElementsByTagName("table"); 

// Iterate over DOMNodeList (Implements Traversable)
foreach ($domTables as $table) 
{ 
    echo DOMinnerHTML($table); 
} 

to create the DOMinnerHTML function that loops through the $childrenm elements and get the inner HTML of each $child element with $element->ownerDocument->saveHTML.

We concatenate the returned HTML to the $innerHTML string and return it once the loop is done.

Then we create a new DOMDocument object.

We call load to parse the $html_string into contents of the DOMDocument object.

And then we call getElementsByTagName to get the table element.

Then we use a foreach loop that calls DOMinnerHTML to get the inner HTML of each $table returned and echo the values.

Conclusion

To get innerHTML of DOMNode with PHP, we can call saveHTML.