I'm trying to create a proxy request to a different domain from my own and doing some changes on the code before outputting the HTML to be displayed. And all works well except that my CSS file doesn't seem to take effect.
<?php
if (isset($_GET['$url']))
{
$html = file_get_contents($_GET['url']);
$dom = new DOMDocument();
#$dom->loadHTML($html);
$a = array();
foreach ($dom->getElementsByTagName('link') as $href)
{
$a[] = $href->getAttribute('href');
}
echo str_replace($a[0],$url."/".$a[0], $html);
}
?>
The result is an HTML document but without CSS styling. But if I check the source code in my browser it shows that the link to the CSS file is okay and clicking on it takes me to that CSS file, but its not taking effect in styling the output
Related
I created a program in php using CURL, in which i can take data of any site and can display it in the browser. Another part of the program is that the data can be saved in the file using file handling and after saving this data, I can find all the http links within the body tag of the saved file. My code is showing all the sites in the browser which I took, but I can not find the http links and some unnecessary code is also occurring like this image, though I don't want it to come.
https://www.screencast.com/t/Nwaz93oU
PHP Code:
<!DOCTYPE html>
<html>
<?php
function get_all_links(){
$html = file_get_contents('http://www.ucertify.com');
$dom = new DOMDocument();
#$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$hrefs = $xpath->evaluate("/html/body//a");
for ($i = 0; $i < $hrefs->length; $i++) {
$href = $hrefs->item($i);
$url = $href->getAttribute('href');
echo $url.'<br />';
}
}
function get_site_data($uc_url){
$get_uc = curl_init();
curl_setopt($get_uc,CURLOPT_URL,$uc_url);
curl_setopt($get_uc,CURLOPT_RETURNTRANSFER,true);
$output=curl_exec($get_uc);
curl_close($get_uc);
$fp=fopen("mohit.txt","w");
fputs($fp,$output);
return $output;
}
?>
<body>
<div>
<?php
$site_content = get_site_data("http://www.ucertify.com");
echo $site_content;
?>
</div>
<div >
<?php
echo get_all_links("http://www.ucertify.com");
?>
</div>
</body>
</html>
On get_all_links method validate if $url variable is a valid url in some pages may have onclick handler to javascript. In order to validate if a url you can use regex and php's preg_match. Also you can look on What is a good regular expression to match a URL? about the needed regex in order to validate a url.
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 have been working with this php code, which should modify Google Calendars layout. But when I put the code to page, it makes everything below it disappear. What's wrong with it?
<?php
$your_google_calendar=" PAGE ";
$url= parse_url($your_google_calendar);
$google_domain = $url['scheme'].'://'.$url['host'].dirname($url['path']).'/';
// Load and parse Google's raw calendar
$dom = new DOMDocument;
$dom->loadHTMLfile($your_google_calendar);
// Change Google's CSS file to use absolute URLs (assumes there's only one element)
$css = $dom->getElementByTagName('link')->item(0);
$css_href = $css->getAttributes('href');
$css->setAttributes('href', $google_domain . $css_href);
// Change Google's JS file to use absolute URLs
$scripts = $dom->getElementByTagName('script')->item(0);
foreach ($scripts as $script) {
$js_src = $script->getAttributes('src');
if ($js_src) { $script->setAttributes('src', $google_domain . $js_src); }
}
// Create a link to a new CSS file called custom_calendar.css
$element = $dom->createElement('link');
$element->setAttribute('type', 'text/css');
$element->setAttribute('rel', 'stylesheet');
$element->setAttribute('href', 'custom_calendar.css');
// Append this link at the end of the element
$head = $dom->getElementByTagName('head')->item(0);
$head->appendChild($element);
// Export the HTML
echo $dom->saveHTML();
?>
When I'm testing your code, I'm getting some errors because of wrong method call:
->getElementByTagName should be ->getElementsByTagName with s on Element
and
->setAttributes and ->getAttributes should be ->setAttribute and ->getAttribute without s at end.
I'm guessing that you don't have any error_reporting on, and because of that don't know anything went wrong?
I have the following code that replaces all tags on a page and adds the nCode image resizer to it. The code is as follows:
function ncode_the_content($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'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.