Little help needed: text to uppercase except html tags

Hi,
I'm trying to do this but i simply can't get to a solution.

What I have:

I need to convert that to :

Basically what i need is to skip somehow the text between < > but can't get it done correctly.

Any ideas?

Regards

 

$text = preg_replace('/>[^<]+</e', 'strtoupper("$0")', $text);

PHP:

 

Many thanks nico, patterns always give me troubles

 

I modified my code above a little bit. It works just link the other though.

 

One more question if you don't mind:

Let's say i want to replace all a letters with letter b from:

Is there any way to do this, but replace only the letters that are not part of html tags as i don't want to change "image.com/sampleimage.jpg" to "imbge.com/sbmpleimbge.jpg"

Also, uppercase does matter.

So the text will be turned into

Thanks

 

Like this?

$text = preg_replace('/>[^<]+</e', 'str_replace("a", "b", "$0")', $text);

PHP:

 

Yes, many thanks