I know RegExp not well, I did not succeeded to split string to array.
I have string like:
<h5>some text in header</h5>
some other content, that belongs to header <p> or <a> or <img> inside.. not important...
<h5>Second text header</h5>
So What I am trying to do is to split text string into array where KEY would be text from header and CONTENT would be all the rest content till the next header like:
array("some text in header" => "some other content, that belongs to header...", ...)
I would suggest looking at the PHP DOM http://php.net/manual/en/book.dom.php. You can read / create DOM from a document.
i've used this one and enjoyed it.
http://simplehtmldom.sourceforge.net/
you could do it with a regex as well.
something like this.
/<h5>(.*)<\/h5>(.*)<h5>/s
but this just finds the first situation. you'll have to cut hte string to get the next one.
any way you cut it, i don't see a one liner for you. sorry.
here's a crummy broken 4 liner.
$chunks = explode("<h5>", $html);
foreach($chunks as $chunk){
list($key, $val) = explode("</h5>", $chunk);
$res[$key] = $val;
}
dont parse HTML via preg_match
instead use php Class
The DOMDocument class
example:
<?php
$html= "<h5>some text in header</h5>
some other content, that belongs to header <p> or <a> or <img> inside.. not important...
<h5>Second text header</h5>";
// a new dom object
$dom = new domDocument('1.0', 'utf-8');
// load the html into the object ***/
$dom->loadHTML($html);
/*** discard white space ***/
$dom->preserveWhiteSpace = false;
$hFive= $dom->getElementsByTagName('h5');
echo $hFive->item(0)->nodeValue; // u can get all h5 data by changing the index
?>
Reference
Related
I'm using an API to translate my blog but it sometimes messes up with my html in a way that it gives me more work to fix everything.
What I'm now trying to do is to extract the content from the html, translate it and put it back where it was.
I have first tried to do this with preg_replace where I would replace every tag by something like ##a_number## and then revert back to the original tag once the text has been translated. Unfortunately it's very difficult to manage because I need to replace every tag by a unique value.
I have then tried it with "simple html dom" which can be found here:
http://simplehtmldom.sourceforge.net/manual.htm
$html = str_get_html($content);
$str = $html;
$ret = $html->find('div');
foreach ($ret as $key=>$value)
{
echo $value;
}
This way I get all texts but there is still some html in the value (div inside div) and I don't know how I can put back translated text into the original object. The structure of this object is so complex that when displaying it, it crashes my browser.
I'm running a bit out of options and there are probably more straightforward ways of doing this. What I'd like to find is a way to get an object or array containing all the html on one side and all the text on the other side. I would loop through the text to get it translated and the merge back everything to avoid breaking the html.
Do you see better options to achieve this?
thanks
Laurent
For example, I have the following HTML, where all the words are lowercase:
<div>
<h2>page not found!</h2>
<p>go to home page or use the search.</p>
</div>
My task is to convert text to capitalized words. To solve it, I fetch all text nodes and convert them using the ucwords function (of course, you should use your translation function instead of it).
libxml_use_internal_errors(true);
$dom = new DomDocument();
$dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$xpath = new DOMXPath($dom);
foreach ($xpath->query('//text()') as $text) {
if (trim($text->nodeValue)) {
$text->nodeValue = ucwords($text->nodeValue);
}
}
echo $dom->saveHTML();
The above outputs the following:
<div>
<h2>Page Not Found!</h2>
<p>Go To Home Page Or Use The Search.</p>
</div>
<div>
<p>
This text is for translating<br>
Next line of text
</p>
</div>
What if you explode the html string into an array splitting on "<" This will result in this array:
Array
(
[0] =>
[1] => div>
[2] => p>
This text is for translating
[3] => br>
Next line of text
[4] => /p>
[5] => /div>
)
Then split every array item on ">". The first item in this array is the tag. Every other item if there is one will be content for translating.
When the tranlating is done, you reverse it by gluing the array items back again.
How to remove all from page except text inside <p> tag?
Page:
This is text.
<div class="text">This is text in 'div' tag</div>
<p>This is text in 'p' tag</p>
Expected result:
This is text in 'p' tag
Greetings.
Basically, you'll have to parse the markup. PHP comes with a good parser in the form of the DOMDocument class, so that's really quite easy:
$dom = new DOMDocument;
$dom->loadHTML($htmlString);
Next, get all p tags:
$paragraphs = $dom->getElementsByTagName('p');
This method returns a DOMNodeList object, which implements the Traversable interface, so you can use it as an array of DOMNode instances (DOMElement in this case):
$first = $paragraphs->item(0);//or $paragraphs[0] even
foreach ($paragraphs as $p) {
echo $p->textContent;//echo the inner text
}
If you only want the paragraph elements that do not contain child elements, then you can easily check that:
foreach ($paragraphs as $p) {
if (!$p->hasChildNodes()) {
echo $p->textContent; // or $p->nodeValue
}
}
A closely related answer with some more links/info: How to split an HTML string into chunks in PHP?
You can easily do this with the native php strip_tags function like so:
strip_tags("<p>This is text in 'p' tag</p>");
Which will return as you expected, "This is text in 'p' tag". NOTE: this is only useful when you have an outer-container div, and you use a little bit of dirty RegExp in order to strip not only the P, but the whole tags the user expected (ex. the div tag). This function has one argument, and a second optional argument. The first one is the string that you are stripping the tags from, and the second one specifies allowable tags that won't be stripped as a string. These tags will not be removed in the process. For more information on the strip_tags function click here. I hope you got the idea :)
I use PHP Simple Html Dom to get some html,now i have a html dom like follow code,i need fetch the plain text inner div,but avoiding the p tags and their content（only return 111111）, who can help me?Thanks in advance!
<div>
<p>00000000</p>
111111
<p>22222222</p>
</div>
It depends on what you mean by "avoiding the p tags".
If you just want to remove the tags, then just running strip_tags() on it should work for what you want.
If you actually want to just return "11111" (ie. strip the tags and their contents) then this isn't a viable solution. For that, something like this may work:
$myDiv = $html->find('div'); // wherever your the div you're ending up with is
$children = $myDiv->children; // get an array of children
foreach ($children AS $child) {
$child->outertext = ''; // This removes the element, but MAY NOT remove it from the original $myDiv
}
echo $myDiv->innertext;
If you text is always at the same position , try this:
$html->find('text', 2)->plaintext; // should return 111111
Here is my solution
I want to get the Primary Text part only.
$title_obj = $article->find(".ofr-descptxt",0); //Store the Original Tree ie) h3 tag
$title_obj->children(0)->outertext = ""; //Unset <br/>
$title_obj->children(1)->outertext = ""; //Unset the last Span
echo $title_obj; //It has only first element
Edited:
If you have PHP errors
Try to enclose with If else or try my lazy code
($title_obj->children(0))?$title_obj->children(0)->outertext="":"";
($title_obj->children(1))?$title_obj->children(1)->outertext = "":"";
Official Documentation
$wordlist = array("<p>", "</p>")
foreach($wordlist as $word)
$string = str_replace($word, "", $string);
I would like to use Simple HTML DOM to remove all images in an article so I can easily create a small snippet of text for a news ticker but I haven't figured out how to remove elements with it.
Basically I would do
Get content as HTML string
Remove all image tags from content
Limit content to x words
Output.
Any help?
There is no dedicated methods for removing elements. You just find all the img elements and then do
$e->outertext = '';
when you only delete the outer text you delete the HTML content itself, but if you perform another find on the same elements it will appear in the result. the reason is that the simple HTML DOM object still has it's internal structure of the element, only without its actual content. what you need to do in order to really delete the element is simply reload the HTML as string to the same variable. this way the object will be recreated without the deleted content, and the simple HTML DOM object will be built without it.
here is an example function:
public function removeNode($selector)
{
foreach ($this->find($selector) as $node)
{
$node->outertext = '';
}
$this->load($this->save());
}
put this function inside the simple_html_dom class and you're good.
I think you have some difficulties because you forgot to save(dump the internal DOM tree back into string).
Try this:
$html = file_get_html("http://example.com");
foreach($html ->find('img') as $item) {
$item->outertext = '';
}
$html->save();
echo $html;
I could not figure out where to put the function so I just put the following directly in my code:
$html->load($html->save());
It basically locks changes made in the for loop back into the html per above.
The supposed solutions are quite expensive and practically unusable in a big loop or other kind of repetition.
I prefer to use "soft deletes":
foreach($html->find('somecondition'),$item){
if (somecheck) $item->setAttribute('softDelete', true); //<= set marker to check in further code
$item->outertext='';
foreach($foo as $bar){
if(!baz->getAttribute('softDelete'){
//do something
}
}
}
This is working for me:
foreach($html->find('element') as $element){
$element = NULL;
}
Adding new answer since removeNode is definitely a better way of removing it:
$html->removeNode('img');
This method probably was not available when accepted answer was marked. You do not need to loop the html to find each one, this will remove them.
Use outerhtml instead of outertext
<div id='your_div'>the contents of your div</div>
$your_div->outertext = '';
echo $your_div // echoes <div id='your_div'></div>
$your_div->outerhtml= '';
echo $your_div // echoes nothing
Try this:
$dom = new Dom();
$dom->loadStr($text);
foreach ($dom->find('element') as $element) {
$element->delete();
}
This works now:
$element->remove();
You can see the documentation for the method here.
Below I remove the HEADER and all SCRIPT nodes of the incoming url by using 2 different methods of the FIND() function. Remove the 2nd parameter to return an array of all matching nodes then just loop through the nodes.
$clean_html = file_get_html($url);
// Find and remove 1st instance of node.
$node = $clean_html->find('header', 0);
$node->remove();
// Find and remove all instances of Nde.
$nodes = $clean_html->find('script');
foreach($nodes as $node) {
$node->remove();
}
I have a string of data that is set as $content, an example of this data is as follows
This is some sample data which is going to contain an image in the format <img src="http://www.randomdomain.com/randomfolder/randomimagename.jpg">. It will also contain lots of other text and maybe another image or two.
I am trying to grab just the <img src="http://www.randomdomain.com/randomfolder/randomimagename.jpg"> and save it as another string for example $extracted_image
I have this so far....
if( preg_match_all( '/<img[^>]+src\s*=\s*["\']?([^"\' ]+)[^>]*>/', $content, $extracted_image ) ) {
$new_content .= 'NEW CONTENT IS '.$extracted_image.'';
All it is returning is...
NEW CONTENT IS Array
I realise my attempt is probably completly wrong but can someone tell me where I am going wrong?
Your first problem is that http://php.net/manual/en/function.preg-match-all.php places an array into $matches, so you should be outputting the individual item(s) from the array. Try $extracted_image[0] to start.
You need to use a different function, if you only want one result:
preg_match() returns the first and only the first match.
preg_match_all() returns an array with all the matches.
Using regex to parse valid html is ill-advised. Because there can be unexpected attributes before the src attribute, because non-img tags can trick the regular expression into false-positive matching, and because attribute values can be quoted with single or double quotes, you should use a dom parser. It is clean, reliable, and easy to read.
Code: (Demo)
$string = <<<HTML
This is some sample data which is going to contain an image
in the format <img src="http://www.randomdomain.com/randomfolder/randomimagename.jpg">.
It will also contain lots of other text and maybe another image or two
like this: <img alt='another image' src='http://www.example.com/randomfolder/randomimagename.jpg'>
HTML;
$srcs = [];
$dom=new DOMDocument;
$dom->loadHTML($string);
foreach ($dom->getElementsByTagName('img') as $img) {
$srcs[] = $img->getAttribute('src');
}
var_export($srcs);
Output:
array (
0 => 'http://www.randomdomain.com/randomfolder/randomimagename.jpg',
1 => 'http://www.example.com/randomfolder/randomimagename.jpg',
)