asked on

Use regular expression to remove all tags

I have lots of pages and there are tons of ... tags. I want to remove all of them. Just keep the text between and 

How do I use preg_replace to move all those tags?

Thanks,

imgriff

An alternative could be PHP's function strip_tags()

http://us.php.net/strip_tags

$string = strip_tags($string, "<a><img><script><div>");

tiger0516

ASKER

Thanks
But this is a White-List solution, I'd like a Black-List solution.

Bernard Savonet

<<But this is a White-List solution, I'd like a Black-List solution.>>
??
Can you elaborate and give more details ob what you want to achieve?

Hube02

To simply remove all instances of <font...> or

<?php
  
  $string = '<font color="red"><font><font size="2">text</font> more text</font> and more text</font>';
  
  while(preg_match('/<\/?font[^>]*>/i', $string, $matches)) {
    $string = str_replace($matches[0], '', $string);
  }
  
  echo $string;
  
?>

Open in new window

tiger0516

ASKER

ok.

php's strip_tags gives a list of ALLOWED tags and remove all others
I want to give a list of NOT ALLOWED tags and keep all others.

tiger0516

ASKER

Thanks Hube02

What about if users leave a space?

eg:




...

Hube02

Don't know what I was thinking with that while loop, the loop is not needed. preg_replace will replace all occurrences by default, so all you need is:

$string = preg_replace('/<\/?font[^>]*>/', '', $string);

ASKER CERTIFIED SOLUTION

Hube02

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

Hube02

I should mention however that that will also replace something like



However, I find it hard to think of why someone would use angel brackets and the word font or fonts in a sentence.

Use regular expression to remove all &lt;font&gt; tags

Use regular expression to remove all <font> tags