Strip HTML tags with RegEx

[Taco Fleur]

Hi,   Any regEx guru's out there who can help out a bit?   I need a regEx to strip ALL html Tags, or rather convert them like so:   <script> = &lt;script&gt; Which is not really a problem to do, but I need to allow certain HTML tags like for example: <b></b> <h1></h1> | <h1 ></h1 > (with space allowed but no other tag within the tag, i.e. <h1 class="x">)   I can't seem to get my head around the reEx for this, I thought that <[^b\s?>] would stop it from editing the <b> tag....... But not...   TIA