Remove custom tags for AMP page in html string using PHP

Question

I am not that good in writing regular expressions so I am asking for help.

I have html string of my page. I want convert html string to Google AMP compatible page. In which I want to replace some custom html tags.

<define:dos> This string explains DOS.</define:dos>

And output should be only This string explains DOS.

There are several strings in my html string starting with <define: I tried to remove them by writing separate preg_replace for each tag which works as expected:

$html = preg_replace('#<define:wlan>#i', '', $html);
$html = preg_replace('#<define:wifi>#i', '', $html);
$html = preg_replace('#<define:dos>#i', '', $html);

And so on

I tried something as follows but didn't work :(

$html = preg_replace('#\<define[^\]>*\](.*?)\</define\>#m', "$1", $html);

I want generic solution for this. Please help.

Thank you in advance.

Answer 1

You can use

<(define:[^>]+>)(.*?)<\/\1

and replace with the second captured group, \2.

https://regex101.com/r/wZQBuM/2