PHP regular expression to extract number from html code

Question

In an html source code with a fragment like this:

of <span class="important">721,006</span>

I want to extract number 721,006 . There could be more than one so I need the word "of" to get the real one.

Could you help me?

Answer 1

I think is a very simple regex, since you don't add any extra requirements:

#<span class="important">([0-9,]+)</span>#

Example