title: Regular Expressions pattern to extract particular digits from text
body: <p>I am trying to extract phone numbers from a string in php using the <code>preg_match_all()</code> function. I know that this pattern <code>'!\d+!'</code> extracts all numbers. But i need it to do more.
  The numbers i want to extract either start with 256 followed by 9 numbers or 078,077,071,079 followed by 8 numbers.
  Thank you.</p>