I've been searching for a solution to this but haven't found quite the right thing yet.
The situation is this:
I need to find all links on a page with a given class (say class="tracker") and then append query string values on the end, so when a user loads a page, those certain links are updated with some dynamic information.
I know how this can be done with Javascript, but I'd really like to adapt it to run server side instead. I'm quite new to PHP, but from the looks of it, XPath might be what I'm looking for but I haven't found a suitable example to get started with. Is there anything like GetElementByClass?
Any help would be greatly appreciated!
Shadowise
Is there anything like GetElementByClass?
Here is an implementation I whipped up...
function getElementsByClassName(DOMDocument $domNode, $className) {
$elements = $domNode->getElementsByTagName('*');
$matches = array();
foreach($elements as $element) {
if ( ! $element->hasAttribute('class')) {
continue;
}
$classes = preg_split('/\s+/', $element->getAttribute('class'));
if ( ! in_array($className, $classes)) {
continue;
}
$matches[] = $element;
}
return $matches;
}
This version doesn't rely on the helper function above.
$str = '<body>
a
a
a
a
</body>
';
$dom = new DOMDocument;
$dom->loadHTML($str);
$anchors = $dom->getElementsByTagName('body')->item(0)->getElementsByTagName('a');
foreach($anchors as $anchor) {
if ( ! $anchor->hasAttribute('class')) {
continue;
}
$classes = preg_split('/\s+/', $anchor->getAttribute('class'));
if ( ! in_array('tracker', $classes)) {
continue;
}
$href = $anchor->getAttribute('href');
$url = parse_url($href);
$attach = 'stackoverflow=true';
if (isset($url['query'])) {
$href .= '&' . $attach;
} else {
$href .= '?' . $attach;
}
$anchor->setAttribute('href', $href);
}
echo $dom->saveHTML();
Output
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><body>
a
a
a
a
</body></html>
I need to find all links on a page
with a given class (say
class="tracker")
[...]
I'm quite new to PHP, but from the
looks of it, XPath might be what I'm
looking for but I haven't found a
suitable example to get started with.
Is there anything like
GetElementByClass?
This XPath 1.0 expression:
//a[contains(
concat(' ',normalize-space(#class),' '),
' tracker '
)
]
A bit shorter, using xpath:
$dom = new DomDocument();
$dom->loadXml('<?xml version="1.0" encoding="UTF-8" ?>
<root>
label
label
label
label
label
label
label
</root>');
$xpath = new DomXPath($dom);
foreach ($xpath->query('//a[contains(#class, "tracker")]') as $node) {
if (preg_match('/\btracker\b/', $node->getAttribute('class'))) {
$node->setAttribute(
'href',
$node->getAttribute('href') . '#some_extra'
);
}
}
header('Content-Type: text/xml; charset"UTF-8"');
echo $dom->saveXml();
Related
This question already has answers here:
How to get innerHTML of DOMNode?
(9 answers)
Closed 5 years ago.
How to Change innerHTML of a php DOMElement ?
Another solution:
1) create new DOMDocumentFragment from the HTML string to be inserted;
2) remove old content of our element by deleting its child nodes;
3) append DOMDocumentFragment to our element.
function setInnerHTML($element, $html)
{
$fragment = $element->ownerDocument->createDocumentFragment();
$fragment->appendXML($html);
while ($element->hasChildNodes())
$element->removeChild($element->firstChild);
$element->appendChild($fragment);
}
Alternatively, we can replace our element with its clean copy and then append DOMDocumentFragment to this clone.
function setInnerHTML($element, $html)
{
$fragment = $element->ownerDocument->createDocumentFragment();
$fragment->appendXML($html);
$clone = $element->cloneNode(); // Get element copy without children
$clone->appendChild($fragment);
$element->parentNode->replaceChild($clone, $element);
}
Test:
$doc = new DOMDocument();
$doc->loadXML('<div><span style="color: green">Old HTML</span></div>');
$div = $doc->getElementsByTagName('div')->item(0);
echo $doc->saveHTML();
setInnerHTML($div, '<p style="color: red">New HTML</p>');
echo $doc->saveHTML();
// Output:
// <div><span style="color: green">Old HTML</span></div>
// <div><p style="color: red">New HTML</p></div>
I needed to do this for a project recently and ended up with an extension to DOMElement: http://www.keyvan.net/2010/07/javascript-like-innerhtml-access-in-php/
Here's an example showing how it's used:
<?php
require_once 'JSLikeHTMLElement.php';
$doc = new DOMDocument();
$doc->registerNodeClass('DOMElement', 'JSLikeHTMLElement');
$doc->loadHTML('<div><p>Para 1</p><p>Para 2</p></div>');
$elem = $doc->getElementsByTagName('div')->item(0);
// print innerHTML
echo $elem->innerHTML; // prints '<p>Para 1</p><p>Para 2</p>'
// set innerHTML
$elem->innerHTML = 'FF';
// print document (with our changes)
echo $doc->saveXML();
?>
I think the best thing you can do is come up with a function that will take the DOMElement that you want to change the InnerHTML of, copy it, and replace it.
In very rough PHP:
function replaceElement($el, $newInnerHTML) {
$newElement = $myDomDocument->createElement($el->nodeName, $newInnerHTML);
$el->parentNode->insertBefore($newElement, $el);
$el->parentNode->removeChild($el);
return $newElement;
}
This doesn't take into account attributes and nested structures, but I think this will get you on your way.
I ended up making this function using a few functions from other people on this page. I changed the one from Joanna Goch the way that Peter Brand says mostly, and also added some code from Guest and from other places.
This function does not use an extension, and does not use appendXML (which is very picky and breaks even if it sees one BR tag that is not closed) and seems to be working good.
function set_inner_html( $element, $content ) {
$DOM_inner_HTML = new DOMDocument();
$internal_errors = libxml_use_internal_errors( true );
$DOM_inner_HTML->loadHTML( mb_convert_encoding( $content, 'HTML-ENTITIES', 'UTF-8' ) );
libxml_use_internal_errors( $internal_errors );
$content_node = $DOM_inner_HTML->getElementsByTagName('body')->item(0);
$content_node = $element->ownerDocument->importNode( $content_node, true );
while ( $element->hasChildNodes() ) {
$element->removeChild( $element->firstChild );
}
$element->appendChild( $content_node );
}
It seems that appendXML doesn't work always - for example if you try to append XML with 3 levels. Here is the function I wrote that always work (you want to set $content as innerHTML to $element):
function setInnerHTML($DOM, $element, $content) {
$DOMInnerHTML = new DOMDocument();
$DOMInnerHTML->loadHTML($content);
$contentNode = $DOMInnerHTML->getElementsByTagName('body')->item(0)->firstChild;
$contentNode = $DOM->importNode($contentNode, true);
$element->appendChild($contentNode);
return $elementNode;
}
Have a look at this library PHP Simple HTML DOM Parser http://simplehtmldom.sourceforge.net/
It looks pretty straightforward. You can change innertextproperty of your elements. It might help.
Here is a replace by class function I just wrote:
It will replace the innerHtml of a class. You can also specify the node type eg. div/p/a etc.
function replaceInnerHtmlByClass($html, $replace=null, $class=null, $nodeType=null){
if(!$nodeType){ $nodeType = '*'; }
$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$nodes = $xpath->query("//{$nodeType}[contains(concat(' ', normalize-space(#class), ' '), '$class')]");
foreach($nodes as $node) {
while($node->childNodes->length){
$node->removeChild($node->firstChild);
}
$fragment = $dom->createDocumentFragment();
$fragment->appendXML($replace);
$node->appendChild($fragment);
}
return $dom->saveHTML($dom->documentElement);
}
Here is another function I wrote to remove nodes with a specific class but preserving the inner html.
Setting replace to true will discard the inner html.
Setting replace to any other content will replace the inner html with the provided content.
function stripTagsByClass($html, $class=null, $nodeType=null, $replace=false){
if(!$nodeType){ $nodeType = '*'; }
$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$nodes = $xpath->query("//{$nodeType}[contains(concat(' ', normalize-space(#class), ' '), '$class')]");
foreach($nodes as $node) {
$innerHTML = '';
$children = $node->childNodes;
foreach($children as $child) {
$tmp = new DOMDocument();
$tmp->appendChild($tmp->importNode($child,true));
$innerHTML .= $tmp->saveHTML();
}
$fragment = $dom->createDocumentFragment();
if($replace !== null && $replace !== false){
if($replace === true){ $replace = ''; }
$innerHTML = $replace;
}
$fragment->appendXML($innerHTML);
$node->parentNode->replaceChild($fragment, $node);
}
return $dom->saveHTML($dom->documentElement);
}
Theses functions can easily be adapted to use other attributes as the selector.
I only needed it to evaluate the class attribute.
Developing on from Joanna Goch's answer, this function will insert either a text node or an HTML fragment:
function nodeFromContent($node, $content) {
//creates a text node, or dom node if content contains html
$lt = strpos($content, '<');
$gt = strrpos($content, '>');
if (!($lt === false || $gt === false) && $gt > $lt) {
//< followed by > means potentially contains HTML
$DOMInnerHTML = new DOMDocument();
$DOMInnerHTML->loadHTML($content);
$contentNode = $DOMInnerHTML->getElementsByTagName('body')->item(0);
$newNode = $node->ownerDocument->importNode($contentNode, true);
} else {
$newNode = $node->ownerDocument->createTextNode($content);
}
return $newNode;
}
usage
$newNode = nodeFromContent($node, $content);
$node->parentNode->insertBefore($newNode, $node);
//or $node->appendChild($newNode) depending on what you require
here is how you do it:
$doc = new DOMDocument('');
$label = $doc->createElement('label');
$label->appendChild($doc->createTextNode('test'));
$li->appendChild($label);
echo $doc->saveHTML();
function setInnerHTML($DOM, $element, $innerHTML) {
$node = $DOM->createTextNode($innerHTML);
$element->appendChild($node);
}
I have a html string that contains exactly one a-element in it. Example:
test
In php I have to test if rel contains external and if yes, then modify href and save the string.
I have looked for DOM nodes and objects. But they seem to be too much for only one A-element, as I have to iterate to get html nodes and I am not sure how to test if rel exists and contains external.
$html = new DOMDocument();
$html->loadHtml($txt);
$a = $html->getElementsByTagName('a');
$attr = $a->item(0)->attributes();
...
At this point I am going to get NodeMapList that seems to be overhead. Is there any simplier way for this or should I do it with DOM?
Is there any simplier way for this or should I do it with DOM?
Do it with DOM.
Here's an example:
<?php
$html = 'test';
$dom = new DOMDocument;
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$nodes = $xpath->query("//a[contains(concat(' ', normalize-space(#rel), ' '), ' external ')]");
foreach($nodes as $node) {
$node->setAttribute('href', 'http://example.org');
}
echo $dom->saveHTML();
I kept going to modify with DOM. This is what I get:
$html = new DOMDocument();
$html->loadHtml('<?xml encoding="utf-8" ?>' . $txt);
$nodes = $html->getElementsByTagName('a');
foreach ($nodes as $node) {
foreach ($node->attributes as $att) {
if ($att->name == 'rel') {
if (strpos($att->value, 'external')) {
$node->setAttribute('href','modified_url_goes_here');
}
}
}
}
$txt = $html->saveHTML();
I did not want to load any other library for just this one string.
The best way is to use a HTML parser/DOM, but here's a regex solution:
$html = 'test<br>
<p> Some text</p>
test2<br>
<a rel="external">test3</a> <-- This won\'t work since there is no href in it.
';
$new = preg_replace_callback('/<a.+?rel\s*=\s*"([^"]*)"[^>]*>/i', function($m){
if(strpos($m[1], 'external') !== false){
$m[0] = preg_replace('/href\s*=\s*(("[^"]*")|(\'[^\']*\'))/i', 'href="http://example.com"', $m[0]);
}
return $m[0];
}, $html);
echo $new;
Online demo.
You could use a regular expression like
if it matches /\s+rel\s*=\s*".*external.*"/
then do a regExp replace like
/(<a.*href\s*=\s*")([^"]\)("[^>]*>)/\1[your new href here]\3/
Though using a library that can do this kind of stuff for you is much easier (like jquery for javascript)
We have the following code that lists the xpaths where $value is found.
We have detected for a given URL (see on picture) a non standard tag td1 which in addition doesn't have a closing tag. Probably the site developers have put that there intentionally, as you see in the screen shot below.
This element creates problems identifying the corect XPath for nodes.
A broken Xpath example :
/html/body/div[2]/div[2]/table/tr[2]/td/table/tr[1]/td[2]/table/tr[2]/td[2]/table[3]/tr[2]/**td1**/td[2]/span/u[1]
(as you see td1 is identified and chained in the Xpath)
We think by removing this element it helps us to build the valid XPath we are after.
A valid example is
/html/body/div[2]/div[2]/table/tr[2]/td/table/tr[1]/td[2]/table/tr[2]/td[2]/table[3]/tr[2]/td[2]/span/u[1]
How can we remove prior loading in DOMXpath? Do you have some other approach?
We would like to remove all the invalid tags which may be other than td1, as h8, diw, etc...
private function extract($url, $value) {
$dom = new DOMDocument();
$file = 'content.txt';
//$current = file_get_contents($url);
$current = CurlTool::downloadFile($url, $file);
//file_put_contents($file, $current);
#$dom->loadHTMLFile($current);
//use DOMXpath to navigate the html with the DOM
$dom_xpath = new DOMXpath($dom);
$elements = $dom_xpath->query("//*[text()[contains(., '" . $value . "')]]");
var_dump($elements);
if (!is_null($elements)) {
foreach ($elements as $element) {
var_dump($element);
echo "\n1.[" . $element->nodeName . "]\n";
$nodes = $element->childNodes;
foreach ($nodes as $node) {
if( ($node->nodeValue != null) && ($node->nodeValue === $value) ) {
echo '2.' . $node->nodeValue . "\n";
$xpath = preg_replace("/\/text\(\)/", "", $node->getNodePath());
echo '3.' . $xpath . "\n";
}
}
}
}
}
You could use XPath to find the offending nodes and remove them, while promoting its children into its place in the DOM. Then your paths will be correct.
$dom_xpath = new DOMXpath($dom);
$results = $dom_xpath->query('//td1'); // (or any offending element)
foreach ($results as $invalidNode)
{
$parentNode = $invalidNode->parentNode;
while ($invalidNode->childNodes)
{
$firstChild = $invalidNode->firstChild;
$parentNode->insertBefore($firstChild,$invalidNode);
}
$parentNode->removeChild($invalidNode);
}
EDIT:
You could also build a list of offending elements by using a list of valid elements and negating it.
// Build list manually from the HTML spec:
// See: http://www.w3.org/TR/html5/section-index.html#elements-1
$validTags = array();
// Convert list to XPath:
$validTagsStr = '';
foreach ($validTags as $tag)
{
if ($validTagsStr)
{ $validTagsStr .= ' or '; }
$validTagsStr .= 'self::'.$tag;
}
$results = $dom_xpath->query('//*[not('.$validTagsStr.')');
Sooo... perhaps str_replace($current, "<td1 va-laign=\"top\">", "") could do the trick?
I have my application to allow users to write comments on my website. Its working fine. I also have tool to insert their weblinks in it. I feel good with contents with their own weblinks.
Now i want to add rel="nofollow" to every links on content that they have been written.
I would like to add rel="nofollow" using php i.e while saving data.
So what's a simple method to add rel="nofollow" or updated rel="someother" with rel="someother nofollow" using php
a nice example will be much efficient
Regexs really aren't the best tool for dealing with HTML, especially when PHP has a pretty good HTML parser built in.
This code will handle adding nofollow if the rel attribute is already populated.
$dom = new DOMDocument;
$dom->loadHTML($str);
$anchors = $dom->getElementsByTagName('a');
foreach($anchors as $anchor) {
$rel = array();
if ($anchor->hasAttribute('rel') AND ($relAtt = $anchor->getAttribute('rel')) !== '') {
$rel = preg_split('/\s+/', trim($relAtt));
}
if (in_array('nofollow', $rel)) {
continue;
}
$rel[] = 'nofollow';
$anchor->setAttribute('rel', implode(' ', $rel));
}
var_dump($dom->saveHTML());
CodePad.
The resulting HTML is in $dom->saveHTML(). Except it will wrap it with html, body elements, etc, so use this to extract just the HTML you entered...
$html = '';
foreach($dom->getElementsByTagName('body')->item(0)->childNodes as $element) {
$html .= $dom->saveXML($element, LIBXML_NOEMPTYTAG);
}
echo $html;
If you have >= PHP 5.3, replace saveXML() with saveHTML() and drop the second argument.
Example
This HTML...
hello
hello
hello
hello
...is converted into...
hello
hello
hello
hello
Good Alex. If it is in the form of a function it is more useful. So I made it below:
function add_no_follow($str){
$dom = new DOMDocument;
$dom->loadHTML($str);
$anchors = $dom->getElementsByTagName('a');
foreach($anchors as $anchor) {
$rel = array();
if ($anchor->hasAttribute('rel') AND ($relAtt = $anchor->getAttribute('rel')) !== '') {
$rel = preg_split('/\s+/', trim($relAtt));
}
if (in_array('nofollow', $rel)) {
continue;
}
$rel[] = 'nofollow';
$anchor->setAttribute('rel', implode(' ', $rel));
}
$dom->saveHTML();
$html = '';
foreach($dom->getElementsByTagName('body')->item(0)->childNodes as $element) {
$html .= $dom->saveXML($element, LIBXML_NOEMPTYTAG);
}
return $html;
}
Use as follows :
$str = "Some content with link Some content ... ";
$str = add_no_follow($str);
I've copied Alex's answer and made it into a function that makes links nofollow and open in a new tab/window (and added UTF-8 support). I'm not sure if this is the best way to do this, but it works (constructive input is welcome):
function nofollow_new_window($str)
{
$dom = new DOMDocument;
$dom->loadHTML($str);
$anchors = $dom->getElementsByTagName('a');
foreach($anchors as $anchor)
{
$rel = array();
if ($anchor->hasAttribute('rel') AND ($relAtt = $anchor->getAttribute('rel')) !== '') {
$rel = preg_split('/\s+/', trim($relAtt));
}
if (in_array('nofollow', $rel)) {
continue;
}
$rel[] = 'nofollow';
$anchor->setAttribute('rel', implode(' ', $rel));
$target = array();
if ($anchor->hasAttribute('target') AND ($relAtt = $anchor->getAttribute('target')) !== '') {
$target = preg_split('/\s+/', trim($relAtt));
}
if (in_array('_blank', $target)) {
continue;
}
$target[] = '_blank';
$anchor->setAttribute('target', implode(' ', $target));
}
$str = utf8_decode($dom->saveHTML($dom->documentElement));
return $str;
}
Simply use the function like this:
$str = '<html><head></head><body>fdsafffffdfsfdffff dfsdaff flkklfd aldsfklffdssfdfds Google</body></html>';
$str = nofollow_new_window($str);
echo $str;
This question already has answers here:
How to get innerHTML of DOMNode?
(9 answers)
Closed 5 years ago.
How to Change innerHTML of a php DOMElement ?
Another solution:
1) create new DOMDocumentFragment from the HTML string to be inserted;
2) remove old content of our element by deleting its child nodes;
3) append DOMDocumentFragment to our element.
function setInnerHTML($element, $html)
{
$fragment = $element->ownerDocument->createDocumentFragment();
$fragment->appendXML($html);
while ($element->hasChildNodes())
$element->removeChild($element->firstChild);
$element->appendChild($fragment);
}
Alternatively, we can replace our element with its clean copy and then append DOMDocumentFragment to this clone.
function setInnerHTML($element, $html)
{
$fragment = $element->ownerDocument->createDocumentFragment();
$fragment->appendXML($html);
$clone = $element->cloneNode(); // Get element copy without children
$clone->appendChild($fragment);
$element->parentNode->replaceChild($clone, $element);
}
Test:
$doc = new DOMDocument();
$doc->loadXML('<div><span style="color: green">Old HTML</span></div>');
$div = $doc->getElementsByTagName('div')->item(0);
echo $doc->saveHTML();
setInnerHTML($div, '<p style="color: red">New HTML</p>');
echo $doc->saveHTML();
// Output:
// <div><span style="color: green">Old HTML</span></div>
// <div><p style="color: red">New HTML</p></div>
I needed to do this for a project recently and ended up with an extension to DOMElement: http://www.keyvan.net/2010/07/javascript-like-innerhtml-access-in-php/
Here's an example showing how it's used:
<?php
require_once 'JSLikeHTMLElement.php';
$doc = new DOMDocument();
$doc->registerNodeClass('DOMElement', 'JSLikeHTMLElement');
$doc->loadHTML('<div><p>Para 1</p><p>Para 2</p></div>');
$elem = $doc->getElementsByTagName('div')->item(0);
// print innerHTML
echo $elem->innerHTML; // prints '<p>Para 1</p><p>Para 2</p>'
// set innerHTML
$elem->innerHTML = 'FF';
// print document (with our changes)
echo $doc->saveXML();
?>
I think the best thing you can do is come up with a function that will take the DOMElement that you want to change the InnerHTML of, copy it, and replace it.
In very rough PHP:
function replaceElement($el, $newInnerHTML) {
$newElement = $myDomDocument->createElement($el->nodeName, $newInnerHTML);
$el->parentNode->insertBefore($newElement, $el);
$el->parentNode->removeChild($el);
return $newElement;
}
This doesn't take into account attributes and nested structures, but I think this will get you on your way.
I ended up making this function using a few functions from other people on this page. I changed the one from Joanna Goch the way that Peter Brand says mostly, and also added some code from Guest and from other places.
This function does not use an extension, and does not use appendXML (which is very picky and breaks even if it sees one BR tag that is not closed) and seems to be working good.
function set_inner_html( $element, $content ) {
$DOM_inner_HTML = new DOMDocument();
$internal_errors = libxml_use_internal_errors( true );
$DOM_inner_HTML->loadHTML( mb_convert_encoding( $content, 'HTML-ENTITIES', 'UTF-8' ) );
libxml_use_internal_errors( $internal_errors );
$content_node = $DOM_inner_HTML->getElementsByTagName('body')->item(0);
$content_node = $element->ownerDocument->importNode( $content_node, true );
while ( $element->hasChildNodes() ) {
$element->removeChild( $element->firstChild );
}
$element->appendChild( $content_node );
}
It seems that appendXML doesn't work always - for example if you try to append XML with 3 levels. Here is the function I wrote that always work (you want to set $content as innerHTML to $element):
function setInnerHTML($DOM, $element, $content) {
$DOMInnerHTML = new DOMDocument();
$DOMInnerHTML->loadHTML($content);
$contentNode = $DOMInnerHTML->getElementsByTagName('body')->item(0)->firstChild;
$contentNode = $DOM->importNode($contentNode, true);
$element->appendChild($contentNode);
return $elementNode;
}
Have a look at this library PHP Simple HTML DOM Parser http://simplehtmldom.sourceforge.net/
It looks pretty straightforward. You can change innertextproperty of your elements. It might help.
Here is a replace by class function I just wrote:
It will replace the innerHtml of a class. You can also specify the node type eg. div/p/a etc.
function replaceInnerHtmlByClass($html, $replace=null, $class=null, $nodeType=null){
if(!$nodeType){ $nodeType = '*'; }
$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$nodes = $xpath->query("//{$nodeType}[contains(concat(' ', normalize-space(#class), ' '), '$class')]");
foreach($nodes as $node) {
while($node->childNodes->length){
$node->removeChild($node->firstChild);
}
$fragment = $dom->createDocumentFragment();
$fragment->appendXML($replace);
$node->appendChild($fragment);
}
return $dom->saveHTML($dom->documentElement);
}
Here is another function I wrote to remove nodes with a specific class but preserving the inner html.
Setting replace to true will discard the inner html.
Setting replace to any other content will replace the inner html with the provided content.
function stripTagsByClass($html, $class=null, $nodeType=null, $replace=false){
if(!$nodeType){ $nodeType = '*'; }
$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$nodes = $xpath->query("//{$nodeType}[contains(concat(' ', normalize-space(#class), ' '), '$class')]");
foreach($nodes as $node) {
$innerHTML = '';
$children = $node->childNodes;
foreach($children as $child) {
$tmp = new DOMDocument();
$tmp->appendChild($tmp->importNode($child,true));
$innerHTML .= $tmp->saveHTML();
}
$fragment = $dom->createDocumentFragment();
if($replace !== null && $replace !== false){
if($replace === true){ $replace = ''; }
$innerHTML = $replace;
}
$fragment->appendXML($innerHTML);
$node->parentNode->replaceChild($fragment, $node);
}
return $dom->saveHTML($dom->documentElement);
}
Theses functions can easily be adapted to use other attributes as the selector.
I only needed it to evaluate the class attribute.
Developing on from Joanna Goch's answer, this function will insert either a text node or an HTML fragment:
function nodeFromContent($node, $content) {
//creates a text node, or dom node if content contains html
$lt = strpos($content, '<');
$gt = strrpos($content, '>');
if (!($lt === false || $gt === false) && $gt > $lt) {
//< followed by > means potentially contains HTML
$DOMInnerHTML = new DOMDocument();
$DOMInnerHTML->loadHTML($content);
$contentNode = $DOMInnerHTML->getElementsByTagName('body')->item(0);
$newNode = $node->ownerDocument->importNode($contentNode, true);
} else {
$newNode = $node->ownerDocument->createTextNode($content);
}
return $newNode;
}
usage
$newNode = nodeFromContent($node, $content);
$node->parentNode->insertBefore($newNode, $node);
//or $node->appendChild($newNode) depending on what you require
here is how you do it:
$doc = new DOMDocument('');
$label = $doc->createElement('label');
$label->appendChild($doc->createTextNode('test'));
$li->appendChild($label);
echo $doc->saveHTML();
function setInnerHTML($DOM, $element, $innerHTML) {
$node = $DOM->createTextNode($innerHTML);
$element->appendChild($node);
}