可以有人告诉我如何有效的信只有PHP正则表达式[重复]

Question

Possible Duplicate:
PHP: Check only chars

i want insert only character from A to Z how i can make it by regular expression

Answer 1

if (ereg('[^A-Za-z]', $text)) {
  echo "More then letters";
}

else {
  echo "only letters";    
}

I hope this helps