Function to extract tags

[redanser]

Hi all,

I am looking for a function that would extract all tags from a string. An exact opposite to strip_tags.

It should turn for example this string:

<h2>Some title</h2>
<p>Some random text</p>
<ul>
<li>List item 1</li>
<li><a href="link.php">List item 2</a></li>
</ul>

Into this:

<h2></h2>
<p></p>
<ul>
<li></li>
<li><a href="link.php"></a></li>
</ul>

Can anyone help me with this? I'm not good enough with regex etc. to do this.

[big_nerd]

radanser,

Please enclose any code between [ code] and [ /code] or [ php] and [ /php] bbcode tags. (it keeps proper formatting).

I found this function on the net somewhere generally used for preg_replace() (to REMOVE html) and I have adapted it a little for preg_match_all() which will return all of the matches into an array.

<?php
$str = "<h2>Some title</h2>
<p>Some random text</p>
<ul>
<li>List item 1</li>
<li><a href=\"link.php\">List item 2</a></li>
</ul>";
$regex = "/<\/?\w+((\s+(\w|\w[\w-]*\w)(\s*=\s*(?:\".*?\"|'.*?'|[^'\">\s]+))?)+\s*|\s*)\/?>/i";
$html = array();
$zx = preg_match_all($regex,$str,$html);
$fixedstr = implode("\n",$html[0]);
printf("<pre>&#37;s</pre>",htmlentities($fixedstr));
?>

This should get you on the right track - you can always search for other functions that remove HTML code and replace the regex.

Good Luck...

[redanser]

Thanks, that works perfectly! :-D