regex help

[raimis100]

Hello

 

Can someone please help me make regex for scraping all hrefs (links) in the string ?

[wildteen88]

First have a search through the posts in the PHP Regex board. There must be 100 if not 1000's of posts for this.

[.josh]

 

 

http://www.phpfreaks.com/forums/index.php/topic,259638.0.html

[raimis100]

This one works,  but can someone please make regex which would scrape links and anchors ?

Links in one array and anchors in another

[raimis100]

Still looking for help on this one

[.josh]

First have a search through the posts in the PHP Regex board. There must be 100 if not 1000's of posts for this.

[raimis100]

I have searched a ton of threads but no one gives me scraped anchor text

[nrg_alpha]

I am sure there are many threads on this as the others have mentioned.. I suppose it boils down to search terms used. Perhaps terms like 'scrape'?

 

But to give you one example:

$str = 'This is an <abbr title="silly example">string</abbr> contains a <a href="[url=http://www.somesite.bork/somefile.php]http://www.somesite.bork/somefile.php[/url]"><strong> hyperlink </strong></a> but you can also visit <a href="[url=http://www.whatever.com/somefile2.php]http://www.whatever.com/somefile2.php[/url]">this link</a> as well.';

preg_match_all('#<a[^>]*href=['"]([^'"]+)['"][^>]*>(.+?)</a>#si', $str, $link);
$arrTotal = count($link) - 1;
for ($a = 0 ; $a < $arrTotal ; $a++) {
    $href[] = $link[1][$a]; // stores the value of attribute href into array $href
    $linkText[] = trim(strip_tags($link[2][$a])); // stores hyperlink text into array $linkText
}
echo '<pre>'.print_r($href, true); // output array $href
echo '<pre>'.print_r($linkText, true); // output array $linkText

 

But I prefer using DOM / XPath for parsing tags. Assuming we use $str from the first snippet:

 

$dom = new DOMDocument;
$dom->loadHTML($str); // replace $str with string name in question
$xpath = new DOMXPath($dom);
$aTag = $xpath->query('//a[@href]');

foreach ($aTag as $val) {
    $href[] = $val->getAttribute('href'); // stores the value of attribute href into array $href
    $linkText[] = $val->nodeValue; // stores hyperlink text into array $linkText
}
$linkText = array_map('trim', $linkText);
echo '<pre>'.print_r($href, true);
echo '<pre>'.print_r($linkText, true);

Edit: the posting system is detecting the bogus URLs in the href values and inserting url bbc tags around them.. so you can simply remove those url tags when you cut and paste to test those snippets.