I have created a function to search through strings and replace keywords in those strings with links. I am using
preg_replace('/\b(?<!=")(?<!=\')(?<!=)(?<!=")(?<!>)(?<!>)' . $keyword . '(?!</a)(?!</a)\b', $newString, $row);
which is working as expected. The only issue is that if someone had a link like this
Luxury Automobile sales
Automobile being our $keyword in this example.
It would end up looking like
Luxury <a href="www.domain.tdl/keywords.html">Automobile Sales</a>
You can understand my frustration.
Not being confident in regex I thought I would ask if anyone here would know a solution.
Thanks!
How about a proper HTML parser like DOMDocument?
$html = 'Luxury Automobile sales';
$dom = new DomDocument;
$dom->loadHTML($html);
$nodes = $dom->getElementsByTagName('a');
foreach ($nodes as $node)
{
$node->nodeValue = str_replace('Automobile', 'Cars', $node->nodeValue);
echo simplexml_import_dom($node)->asXML();
}
Is not a problem to get element attribute too
foreach ($nodes as $node)
{
$attr = $node->getAttributeNode('href');
$attr->value = str_replace('Automobile', 'keyword', $attr->value);
echo simplexml_import_dom($node)->asXML();
}
Related
I want to get the span id "CPH1_lblCurrent" from the url and save it in the database.
here is the code that i tried by seeing some examples.
<?php
$file = $DOCUMENT_ROOT. "http://www.mypetrolprice.com/2/Petrol-price-in-Delhi";
$doc = new DOMDocument();
$doc->loadHTMLFile($file);
$xpath = new DOMXpath($doc);
$elements = $xpath->query('//span[#id="CPH1_lblCurrent"]');
if (!is_null($elements)) {
foreach ($elements as $element) {
$nodes = $element->childNodes;
foreach ($nodes as $node) {
echo $node->nodeValue. "\n";
}
}
}
?>
This shows me the following.
Current Delhi Petrol Price = 67.12 Rs/Ltr
but i want only the value 67.12.
Can somebody help me.
try to use this simple regex for getting nubmer
.*= ([\d.]+) .*
preg_match
I'm having trouble to extract the integers between the brackets from this website.
Part of markup from the website:
<span class="b-label b-link-number" data-num="(322206)">Music & Video</span>
<span class="b-label b-link-number" data-num="(954218)">Toys, Hobbies & Games</span>
<span class="b-label b-link-number" data-num="(502981)">Kids, Baby & Maternity</span>
How do I extract the integers between the brackets?
Desired output:
322206
954218
502981
Should I use Regex since they got the same class name (but not Regex to get between brackets since there are other unwanted elements inside bracket as well from the source code).
Normally, this would be the way I use to extract information:
<?php
//header('Content-Type: text/html; charset=utf-8');
$grep = new DoMDocument();
#$grep->loadHTMLFile("http://global.rakuten.com/en/search/?tl=&k=");
$finder = new DomXPath($grep);
$class = "b-list-item";
$nodes = $finder->query("//*[contains(#class, '$class')]");
foreach ($nodes as $node) {
$span = $node->childNodes;
$search = array(0,1,2,3,4,5,6,7,8,9,'(',')');
$categories = str_replace($search, '', $span->item(0)->nodeValue);
echo '<br>' . '<font color="green">' . $categories . ' ' . '</font>' ;
}
?>
but since the data I want is inside the tag, how do I extract them?
Adding on your current code, its simply straight forward, just change that $class to that class you desire and use ->getAttribute() to get those data-num's:
$grep = new DoMDocument();
#$grep->loadHTMLFile("http://global.rakuten.com/en/search/?tl=&k=");
$finder = new DomXPath($grep);
$class = "b-link-number"; // change the span class
$nodes = $finder->query("//*[contains(#class, '$class')]"); // target those
$numbers = array();
foreach ($nodes as $node) { // for every found elemenet
$link_num = $node->getAttribute('data-num'); // get the attribute `data-num`
$link_num = str_replace(['(', ')'], '', $link_num); // simply remove those parenthesis
$numbers[] = $link_num; // push it inside the container
}
echo '<pre>';
print_r($numbers);
<span[^>)()]*\((\d+)\)[^>]*>
Try this.Grab the capture.See demo.
http://regex101.com/r/iM2wF9/10
I have a php code that could extract the categories and display them. However,
I still can't extract the numbers that goes along with it too(without the bracket).
Need to be separated between the categories and number(not extract together).
Maybe do another for loop using Regex, etc...
This is the code:
<?php
$grep = new DoMDocument();
#$grep->loadHTMLFile("http://www.lelong.com.my/Auc/List/BrowseAll.asp");
$finder = new DomXPath($grep);
$class = "CatLevel1";
$nodes = $finder->query("//*[contains(#class, '$class')]");
foreach ($nodes as $node) {
$span = $node->childNodes;
echo $span->item(0)->nodeValue."<br>";
}
?>
Is there any way I could do that? Thanks!
This is my desired output:
Arts, Antiques & Collectibles : 9768<br>
B2B & Industrial Products : 2342<br>
Baby : 3453<br>
etc...
Just add the other sibling as well. Example:
foreach ($nodes as $node) {
$span = $node->childNodes;
echo $span->item(0)->nodeValue . ': ' . str_replace(array('(', ')'), '', $span->item(1)->nodeValue);
echo '<br/>';
}
EDIT: Just use str_replace for that simple purpose of removing that parenthesis.
Sidenote: Always put the UTF-8 Encoding on your PHP file.
header('Content-Type: text/html; charset=utf-8');
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)
I have some code that is generating a diff between two documents, inserting <ins> and <del> tags haphazardly. For the most part it's doing a great job, but every now and then it inserts tags in script, style and the title tags.
Any ideas on how to remove the <del> tags (including the text between them), remove the <ins> tags (but retaining the text within them as part of the original string), however only within those three tags? (title, script and style).
Don't use regex to do this; it sounds like you have to deal with many, many lines. DOMDocument is great.
$dom = new DOMDocument;
$dom->loadHTML($your_html_string);
$xpath = new DOMXPath($dom);
foreach ($xpath->query('//script|//title|//style') as $node) {
foreach ($node->getElementsByTagName('del') as $delNode) {
$node->removeChild($delNode);
}
foreach ($node->getElementsByTagName('ins') as $insNode) {
$node->replaceChild($dom->createTextNode($insNode->nodeValue), $insNode);
}
}
Untested, this may or may not work:
$str = preg_replace('/(<script.*?>.*?)<del>.*?</del>(.*?</script>)/im', '$1$2', $str);
It attempts to look within the <script> ... </script> block of the string, and replace any instances of <del>...</del> with empty string.
The following ended up working quite well for me:
$tags = array('script', 'title', 'style');
foreach ($tags as $tag) {
$str = preg_replace_callback(
'/(<' . ($tag) . '\b[^>]*>)(.*?)(<\/' . ($tag) . '>)/is',
function($match) {
$replaced = preg_replace(
array(
'/__Delete-Start__.+__Delete-End__/Uis',
'/__Insert-Start__(.+)__Insert-End__/Uis'
),
array(
'',
'$1'
),
$match[2]
);
return ($match[1]) . ($replaced) . ($match[3]);
},
$str
);
}
While the following didn't end up being my solution, it did get me far and could be useful to others:
$dom = new DOMDocument;
$dom->loadHTML($str);
$xpath = new DOMXPath($dom);
foreach ($xpath->query('//script|//title|//style') as $node) {
foreach ($node->getElementsByTagName('del') as $delNode) {
$node->removeChild($delNode);
}
foreach ($node->getElementsByTagName('ins') as $insNode) {
$node->replaceChild($dom->createTextNode($insNode->nodeValue), $insNode);
}
}
$str = (string) $dom->saveXML($dom, LIBXML_NOEMPTYTAG);//$xpath->query('//p')->item(0));
Hope this helps someone else.