PHP and regexp to accept only Greek characters in form

Question

I need a regular expression that accepts only Greek chars and spaces for a name field in my form (PHP). I\'ve tried several findings on the net but no luck. Any help will be

Answer 1

The other answers here didn't work for me. Greek Unicode characters are included in the following two blocks

• Greek and Coptic U+0370 to U+03FF (normal Greek letters)
• Greek Extended U+1F00 to U+1FFF (Greek letters with diacritics)

The following regex matches whole Greek words:

[\u0370-\u03ff\u1f00-\u1fff]+

I will let the reader translate that to whichever programming language format they may be using.