how to get text from HTML source?

[notset]

Hello,

I receive a site content with cURL.

In the source is HTML input field and i need to get it's value.

<input type=hidden name=NUM value="123456">

How to get 123456 ?

Thank you.

[mjax]

if(preg_match('/\<input type="hidden" name=NUM value="([^"]*)"\>/', $content, $matches)) {
  echo $matches[1];
}

May need tweaking and is untested.