I'm having trouble trying to write an if statement for the DOM that will check if $html is blank. However, whenever the HTML page does end up blank, it just removes everything that would be below DOM (including what I had to check if it was blank).
$html = file_get_contents("http://example.com/");
$dom = new DOMDocument;
#$dom->loadHTML($html);
$links = $dom->getElementById('dividhere')->getElementsByTagName('img');
foreach ($links as $link)
{
echo $link->getAttribute('src');
}
All this does is grab an image URL in the specified div, which works perfectly until the page is a blank HTML page.
I've tried using SimpleHTMLDOM, which didn't work either (it didn't even fetch the image on working pages). Did I happen to miss something with this one or am I just missing something in both?
include_once('simple_html_dom.php')
$html = file_get_html("http://example.com/");
foreach($html->find('div[id="dividhere"]') as $div)
{
if(empty($div->src))
{
continue;
}
echo $div->src;
}
Get rid on the $html variable and just load the file into $dom by doing #$dom->loadHTMLFile("http://example.com/");, then have an if statement below that to check if $dom is empty.
Related
An api returns me couple of html code (only part of the body, not full html) and i want to change all images src's with others.
I get and set attributes then if i echo it in foreach loop i see old and new value but when i try to save it with saveHTML then dump the full html block which is returned from api, i don't see replaced paths.
$page = json_decode($page);
$page = (array) $page->rows;
$page = ($page[0]->_->content);
$dom = new \DOMDocument();
$dom->loadHTML($page);
$tag = $dom->getElementsByTagName('img');
foreach($tag as $t)
{
echo $t->getAttribute('src').'<br'>; //showing old src
$t->setAttribute('src', 'bla');
echo $t->getAttribute('src').'<br'>; //showing new src
}
$dom->saveHTML();
var_dump($page); //nothing is changed
My_ friend this is not how it works.
You should have your edited HTML in the result of saveHTML() so:
$editedHtml = $dom->saveHTML()
var_dump($editedHtml);
Now you should see your changed HTML.
Explanation is that $page is completely different object that has nothing to do with $dom object.
Cheers!
I know there are similar question, but, trying to study PHP I met this error and I want understand why this occurs.
<?php
$url = 'http://aice.anie.it/quotazione-lme-rame/';
echo "hello!\r\n";
$html = new DOMDocument();
#$html->loadHTML($url);
$xpath = new DOMXPath($html);
$nodelist = $xpath->query(".//*[#id='table33']/tbody/tr[2]/td[3]/b");
foreach ($nodelist as $n) {
echo $n->nodeValue . "\n";
}
?>
this prints just "hello!". I want to print the value extracted with the xpath, but the last echo doesn't do anything.
You have some errors in your code :
You try to get the table from the url http://aice.anie.it/quotazione-lme-rame/, but it's actually in an iframe located at http://www.aiceweb.it/it/frame_rame.asp, so get the iframe url directly.
You use the function loadHTML(), which load an HTML string. What you need is the loadHTMLFile function, which takes the link of an HTML document as a parameter (See http://www.php.net/manual/fr/domdocument.loadhtmlfile.php)
You assume there is a tbody element on the page but there is no one. So remove that from your query filter.
Working code :
$url = 'http://www.aiceweb.it/it/frame_rame.asp';
echo "hello!\r\n";
$html = new DOMDocument();
#$html->loadHTMLFile($url);
$xpath = new DOMXPath($html);
$nodelist = $xpath->query(".//*[#id='table33']/tr[2]/td[3]/b");
foreach ($nodelist as $n) {
echo $n->nodeValue . "\n";
}
I am getting data from a website using DOM. I've tested my code in my local server and it works perfectly however, when I uploaded it on a server and ran the code, the script I created returned html tags without any content. My code looks something like this:
$divs = $dom->getElementsByTagName('div');
foreach($divs as $div){
if($div->getAttribute('class') == "content1"){
$dom = new DOMDocument();
$dom->appendChild($dom->importNode($div, true));
$content1 = $dom->saveHTML();
echo "content:".$content1;
}
}
In my localhost, it returns something like so:
<div class="content1">This is my content</div>
However, in the server, I strangely get the empty html tags like so:
<div class="content1"></div>
What are possible causes of this problem? Is there any way I can fix it? Please advise.
PHP version under 5.3.6 :
create a variable that will contains a clone of the current node with all sub nodes,
append it as a child
echo the returned value.
foreach($divs as $div) {
if($div->getAttribute('class') == "content1"){
$dom = new DOMDocument();
$cloned = $div->cloneNode(TRUE);
$dom->appendChild($dom->importNode($cloned,TRUE));
$content1 = $dom->saveHTML();
echo "content:".$content1;
}
}
EDIT: I've made a mistake it was not
$cloned = $element->cloneNode(TRUE);
but
$cloned = $div->cloneNode(TRUE);
sorry ^^ (hope it will work)
I have the following code that replaces all tags on a page and adds the nCode image resizer to it. The code is as follows:
function ncode_the_content($content) {
return preg_replace("/<img([^`|>]*)>/im", "<img onload=\"NcodeImageResizer.createOn(this);\"$1>", $content); }
}
What I need to do is make it so that if an image has the class of "noresize" it doesn't do the preg_match.
I have only managed to get it so that if there is the "noresize" class anywhere on the page it stops resizing all images instead of just the one with the correct class.
Any suggestions?
UPDATE:
Am I even remotely in the right ballpark with this?
function ncode_the_content($content) {
//Load the HTML page
$html = file_get_contents($content);
//Parse it. Here we use loadHTML as a static method
//to parse the HTML and create the DOM object in one go.
#$dom = DOMDocument::loadHTML($html);
//Init the XPath object
$xpath = new DOMXpath($dom);
//Query the DOM
$linksnoresize = $xpath->query( 'img[#class = "noresize"]' );
$links = $xpath->query( 'img[]' );
//Display the results as in the previous example
foreach($links as $link){
echo $link->getAttribute('onload'), 'NcodeImageResizer.createOn(this);';
}
foreach($linksnoresize as $link){
echo $link->getAttribute('onload'), '';
}
}
Here's some untested code:
$dom = DOMDocument::loadHTML($content);
$images = $dom->getElementsByTagName("img");
foreach ($images as $image) {
if (!strstr($image->getAttribute("class"), "noresize")) {
$image->setAttribute("onload", "NcodeImageResizer.createOn(this);");
}
}
But, if it were me, I would eschew any such inline event handler and instead just find the appropriate elements with Javascript.
I ended up just using pure CSS and adding a around the images I didn't want to be resized. Forced the width and height of that div back to auto and then removed the warning message that was displayed above them. Seems to work fine. Thanks for your help :)
I've searched around for solutions to this question, but each one i find, and try doesn't work.
I'm trying to grab the content of a div from a forum topic.
I've tried using preg_match and that only displayed "Array" then I tried using this method
$html = file_get_contents("http://www.lcs-server.co.uk/forum/index.php/topic,$id_topic");
$dom = new DOMDocument;
$dom->loadHTML($html);
$element = $dom->getElementById("msg_$id_msg");
var_dump($element);
This will show "object(DOMElement)#1 (0) { } "
The $id_topic and $id_msg are defined above this code, taken from the forum database. I did try taking the message from the forum database, but it displayed BB code tags, I'd like it to grab the post content, and display it in HTML, as it's displayed on the forum post itself.
This is the code I'm using now and giving me "Fatal error: Cannot redeclare DOMinnerHTML()"
$html = file_get_contents("http://www.lcs-server.co.uk/forum/index.php/topic,$id_topic");
$dom = new DOMDocument;
$dom->loadHTML($html);
$domelement = $dom->getElementById("msg_$id_msg");
foreach ($domelement as $element)
{
echo DOMinnerHTML($element);
}
function DOMinnerHTML($DOMelement)
{
$innerHTML = "";
$children = $DOMelement->childNodes;
foreach ($children as $child)
{
$tmp_dom = new DOMDocument();
$tmp_dom->appendChild($tmp_dom->importNode($child, true));
$innerHTML.=trim($tmp_dom->saveHTML());
}
return $innerHTML;
}
getElementById returns a DOM node object. It does not return the HTML of the node. For that, you have to get the node's "innerHTML". This properly is not officially supported by PHP's dom object for some reason, but can be faked using this answer: How to get innerHTML of DOMNode?