Grabbing the href attribute of an A element

Reliable Regex for HTML are difficult. Here is how to do it with DOM:

$dom = new DOMDocument;
$dom->loadHTML($html);
foreach ($dom->getElementsByTagName('a') as $node) {
    echo $dom->saveHtml($node), PHP_EOL;
}

The above would find and output the "outerHTML" of all A elements in the $html string.

To get all the text values of the node, you do

echo $node->nodeValue;

To check if the href attribute exists you can do

echo $node->hasAttribute( 'href' );

To get the href attribute you'd do

echo $node->getAttribute( 'href' );

To change the href attribute you'd do

$node->setAttribute('href', 'something else');

To remove the href attribute you'd do

$node->removeAttribute('href');

You can also query for the href attribute directly with XPath

$dom = new DOMDocument;
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);
$nodes = $xpath->query('//a/@href');
foreach($nodes as $href) {
    echo $href->nodeValue;                       // echo current attribute value
    $href->nodeValue = 'new value';              // set new attribute value
    $href->parentNode->removeAttribute('href');  // remove attribute
}

Also see:

Best methods to parse HTML
DOMDocument in php

On a sidenote: I am sure this is a duplicate and you can find the answer somewhere in here

I agree with Gordon, you MUST use an HTML parser to parse HTML. But if you really want a regex you can try this one :

/^<a.*?href=(["\'])(.*?)\1.*$/

This matches <a at the begining of the string, followed by any number of any char (non greedy) .*? then href= followed by the link surrounded by either " or '

$str = '<a title="this" href="that">what?</a>';
preg_match('/^<a.*?href=(["\'])(.*?)\1.*$/', $str, $m);
var_dump($m);

Output:

array(3) {
  [0]=>
  string(37) "<a title="this" href="that">what?</a>"
  [1]=>
  string(1) """
  [2]=>
  string(4) "that"
}

The pattern you want to look for would be the link anchor pattern, like (something):

$regex_pattern = "/<a href=\"(.*)\">(.*)<\/a>/";

why don't you just match

"<a.*?href\s*=\s*['"](.*?)['"]"

<?php

$str = '<a title="this" href="that">what?</a>';

$res = array();

preg_match_all("/<a.*?href\s*=\s*['\"](.*?)['\"]/", $str, $res);

var_dump($res);

?>

then

$ php test.php
array(2) {
  [0]=>
  array(1) {
    [0]=>
    string(27) "<a title="this" href="that""
  }
  [1]=>
  array(1) {
    [0]=>
    string(4) "that"
  }
}

which works. I've just removed the first capture braces.

For the one who still not get the solutions very easy and fast using SimpleXML

$a = new SimpleXMLElement('<a href="www.something.com">Click here</a>');
echo $a['href']; // will echo www.something.com

Its working for me

Grabbing the href attribute of an A element

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