The innerHTML() function presented in this page it is the equivalent of the innerHTML property from JavaScript. This function can be used in PHP to get the HTML content from a HTML element within a DOMDocument object.

Code of innerHTML()

// returns a string with the HTML content from a DOMDocument node element ($elm)
function innerHTML(DOMNode $elm) { 
  $innerHTML = ''; 
  $children  = $elm->childNodes;

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

  return $innerHTML;
}
- Example usage of innerHTML().
<?php
// returns a string with the HTML content from a DOMDocument node element ($elm)
function innerHTML(DOMNode $elm) { 
  $innerHTML = ''; 
  $children  = $elm->childNodes;

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

  return $innerHTML;
}

// string with HTML content
$strhtml = '<div id="dv1">Flash Games: https://marplo.net/jocuri/</div>
 <div id="dv2"><p class="cls">Free PHP Course: <a href="https://coursesweb.net/php-mysql/" title="PHP Course">CoursesWeb.net</a></p></div>';

// create the DOMDocument object, and load HTML from $strhtml
$dochtml = new DOMDocument();
$dochtml->loadHTML($strhtml);

// get the element with id="dv2"
$dv2 = $dochtml->getElementById('dv2');

// uses innerHTML() to get the HTML content from $dv2
$cnt_dv2 = innerHTML($dv2);

// output the HTML content
echo $cnt_dv2;
?>
- Output:
<p class="cls">Free PHP Course: <a href="https://coursesweb.net/php-mysql/" title="PHP Course">CoursesWeb.net</a></p>

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which tag is used in <table> to create table header cell?
<thead> <th> <td>
<table><tr>
  <th>Title 1</th>
  <th>Title 2</th>
</tr></table>
Which CSS property sets the distance between lines?
line-height word-spacing margin
.some_class {
  line-height: 150%;
}
Which function opens a new browser window.
alert() confirm() open()
document.getElementById("id_button").onclick = function(){
  window.open("http://coursesweb.net/");
}
Indicate the PHP function that returns an array with names of the files and folders inside a directory.
mkdir() scandir() readdir()
$ar_dir = scandir("dir_name");
var_export($ar_dir);
innerHTML in PHP

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