I'm doing a DOMDocument where i get information from a website, i'm trying to get the text inside of the <p> </p> , the code works fine but the fact is that the website has many <P> codes so i get all the information, i just want the information of the first <p>,
the <p> has not id classes so it doesn't help please check the code and help me to know how to get only the first <p>
$html = file_get_contents('http://example.com');
$dom = new DOMDocument;
#$dom->loadHTML($html);
$links = $dom->getElementsByTagName('p');
forsearch ($links as $link){
echo $link->nodeValue;
echo $link->getAttribute('') , '<br>';
$goal = $link->nodeValue;
}
the code works fine but it shows all the text, i just need the first <p> not all.
To get only the first paragraph element you can do it like that:
$doc = new \DOMDocument();
$doc->loadHTML(file_get_contents('http://example.com'));
$paragraphs = $doc->getElementsByTagName('p');
echo "Content of first paragraph: {$paragraphs->item(0)->nodeValue}\n";
Related
So I tried to get the "Current Song" as echo in a PHP file using XPath.
I tried to echo the file_get_content and it returns the webpage I'm trying to get the content from, however it seems that I can't filter the webpage content using XPath. It should echo only the Current Song.
This is what I've tried:
<?php
libxml_use_internal_errors(false);
$html = file_get_contents('http://185.40.20.83/radio/8000/');
$doc = new DOMDocument;
$doc->loadHTML($html);
$xpath = new DOMXpath($doc);
$node = $xpath->query('/html/body/div/div[1]/div[2]/table/tbody/tr[10]/td[2]')->item(0);
echo $node->textContent;
?>
I'm trying this for over one hour and I'm loosing hope because I don't see what's the problem...
Try changing your $node to :
$node = $xpath->query('//table//tr[./td[text()="Current Song:"]]/td[2]')->item(0);
or
$node = $xpath->query('//table//tr[./td[text()="Current Song:"]]/td[2]');
echo $node[0]->nodeValue;
Output:
Chmst - Pump Up The Jam
I have the following div:
<div class="myclass"><strong><a rel="nofollow noopener" href="some link">dynamic content</a></strong></div>
and I want to get only the: dynamic content anchor text.
so far I have tried with preg_match_all:
"'<div class=\"myclass\">(.*?)</div>'si"
that returns all div content.
I tried to combine it with:
"|<a.*(?=href=\"([^\"]*)\")[^>]*>([^<]*)</a>|i"
that returns anchor text but I cannot make it to work
can someone help?
thank you
You can use DOMDocument instead to preg_match_all
$html = '<div class="myclass"><strong><a rel="nofollow noopener" href="some link">dynamic content</a></strong></div>';
$dom = new DOMDocument();
#$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$query = './/div[#class="myclass"]/strong/a';
$nodes = $xpath->query($query);
echo $nodes[0]->textContent;
I'm calling some wikipedia content two different way:
$html = file_get_contents('https://en.wikipedia.org/wiki/Sans-serif');
The first one is to call the first paragraph
$dom = new DomDocument();
#$dom->loadHTML($html);
$p = $dom->getElementsByTagName('p')->item(0)->nodeValue;
echo $p;
The second one is to call the first paragraph after a specific $id
$dom = new DOMDocument();
#$dom->loadHTML($html);
$p=$dom->getElementById('$id')->getElementsByTagName('p')->item(0);
echo $p->nodeValue;
I'm looking for a third way to call all the first part.
So I was thinking about calling all the <p> before the id or class "toc" which is the id/class of the table of content.
Any idea how to do that?
If you're just looking for the intro in plain text, you can simply use Wikipedia's API:
https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&explaintext=&titles=Sans-serif
If you want HTML formatting as well (excluding inner images and the likes):
https://en.wikipedia.org/w/api.php?format=json&action=query&prop=extracts&exintro=&titles=Sans-serif
You could use DOMDocument and DOMXPath with for example an xpath expression like:
//div[#id="toc"]/preceding-sibling::p
$doc = new DOMDocument();
$doc->load("https://en.wikipedia.org/wiki/Sans-serif");
$xpath = new DOMXPath($doc);
$nodes = $xpath->query('//div[#id="toc"]/preceding-sibling::p');
foreach ($nodes as $node) {
echo $node->nodeValue;
}
That would give you the content of the paragraphs preceding the div with id = toc.
I'm trying to write a document that will go through a webpage that was poorly coded and return the title element. However, the person who made the website I plan on scraping did not use ANY classes, simply just div elements. Heres the source webpage I'm trying to scrape:
<tbody>
<tr>
<td style = "...">
<div style = "...">
<div style = "...">TEXT I WANT</div>
</div>
</td>
</tr>
</tbody>
and when I copy the xpath in chrome I get this string:
/html/body/table/tbody/tr[2]/td[3]/table/tbody/tr[1]/td/div/div[3]
I'm having trouble figuring out where I put that string in an xpath query.
If not an xpath query maybe I should do a preg_match?
I tried this:
$location = '/html/body/table/tbody/tr[2]/td[3]/table/tbody/tr[1]/td/div/div[3]';
$html = file_get_contents($URL);
$doc = new DomDocument();
$doc->loadHtml($html);
$xpath = new DomXPath($doc);
// Now query the document:
foreach ($xpath->query($location) as $node) {
echo $node, "\n";
}
but nothing is printed to the page.
Thanks.
EDIT: Full sourse code here:
http://pastebin.com/K5tZ4dFH
EDIT2: Cleaner code screen shot: http://i.imgur.com/lWKheBy.png
From looking at your source, try the following:
$html = file_get_contents($URL);
$doc = new DOMDocument();
$doc->loadHTML($html);
$xpath = new DOMXPath($doc);
$nodes = $xpath->query("//div[contains(#style, 'left:20px')]");
foreach ($nodes as $node) {
echo $node->textContent;
}
It looks like you want the text just before the first </div>, so this regex will find that:
[^<>]+(?=<\/div>)
Here's a live demo.
I would like to cut off some portion of html, I can take it by using XPath and DomDocument but the problem is that I need result as a html code string. Normally I would use reg. expr. for that but I wouldn't like to do a complicated search pattern that would mach the begining and the end of tag.
That's the example input:
some html code before
<div>this <b>is</b> what I want</div>
some html after
and the output:
<div>this <b>is</b> what I want</div>
I tried something like this:
subject = 'some html code before
<div>this <b>is</b> what I want</div>
some html after';
$doc = new DOMDocument();
$doc->loadHTML($subject);
$xpath = new DOMXpath($doc);
$result = $xpath->query("//div/*");
echo $result->saveHTML();
but i got only error:
Call to undefined method DOMNodeList::saveHTML()
Does anyone know how to get the result as a html string by using DomDocument and XPath?
Thank you Gentleman for pointing out my missunderstanding with accessing methods that are not aviailable in a child object. But line:
echo $doc->saveHTML($result->item(0));
generates only warning (without the html sting I want to have). Luckily I found another soulution and here it is:
<?php
$subject = '<html>
<head>
<title>A very short ebook</title>
<meta name="charset" value="utf-8" />
</head>
<body>
<h1 class="bookTitle">A very short ebook</h1>
<p style="text-align:right">Written by Kovid Goyal</p>
<div class="introduction">
<p>A very short ebook to demonstrate the use of XPath.</p>
</div>
<h2 class="chapter">Chapter One</h2>
<p>This is a truly fascinating chapter.</p>
<h2 class="chapter">Chapter Two</h2>
<p>A worthy continuation of a fine tradition.</p>
</body>
</html>';
$doc = new DOMDocument();
$doc->loadHTML($subject);
$xpath = new DOMXpath($doc);
$result = $xpath->query("//div");
//echo $doc->saveHTML($result->item(0));
echo domNodeList_to_string($result);
function domNodeList_to_string($DomNodeList) {
$output = '';
$doc = new DOMDocument;
while ( $node = $DomNodeList->item($i) ) {
// import node
$domNode = $doc->importNode($node, true);
// append node
$doc->appendChild($domNode);
$i++;
}
$output = $doc->saveHTML();
$output = print_r($output, 1);
// I added this because xml output and ajax do not like each others
//$output = htmlspecialchars($output);
return $output;
}
php>
so if one has a query like that:
$result = $xpath->query("//div");
then will get the raw html string output:
<div class="introduction">
<p>A very short ebook to demonstrate the use of XPath.</p>
</div>
if the query is:
$result = $xpath->query("//p");
then output will be:
<p style="text-align:right">Written by Kovid Goyal</p><p>A very short ebook to demonstrate the use of XPath.</p><p>This is a truly fascinating chapter.</p><p>A worthy continuation of a fine tradition.</p>
Does anyone know simpler (embeded in php) method to get the same result?
Try this:
$subject = 'some html code before
<div>this <b>is</b> what I want</div>
some html after';
$doc = new DOMDocument();
$doc->loadHTML($subject);
$xpath = new DOMXpath($doc);
$result = $xpath->query("//div");
echo $doc->saveHTML($result->item(0)); //echoes what you want :)
The saveHTML function belongs to the DOMDocument object, you can't call it directly on the node (much less on the NodeList, which is what the query returns), but what you can do is pass it the node as a param.
Also, your query was wrong: what you want is the div element (i.e. //div), not its children (//div/*).
As per the php manual docs on DOMXPath::querydocs, the function:
Returns a DOMNodeList containing all nodes matching the given XPath
expression. Any expression which does not return nodes will return an
empty DOMNodeList.
This means that the $result in the following code will be a DOMNodeListdocs object. So if you want to get individual HTML code out from inside it you'll need to use methods available with a DOMNodeList object. In this case, the item method:
$result = $xpath->query("//div");
echo $doc->saveHTML($result->item(0));
$result->item(0) returns the first DOMNode in the DOMNodeList created by your xpath query.
Try this :
$subject = 'some html code before<div>this <b>is</b> what I want</div>some html after';
$doc = new DOMDocument('1.0');
$doc->loadHTML($subject);
$xpath = new DOMXpath($doc);
$result = $xpath->query("//div");
$docSave = new DOMDocument('1.0');
foreach ( $result as $node ) {
$domNode = $docSave->importNode($node, true);
$docSave->appendChild($domNode);
}
echo $docSave->saveHTML();