Question

How to check tgat a generated string contains at least one letter using php.

Can someone help me?

Answer 1

You need to use preg_match with very simple Regex

try:

$string = "3456525675612765";

$pattern = '/[A-Za-z]/';
preg_match($pattern, $string, $matches);
if (!$matches)
{
    print "no letters";
}