Capitalization

Is there any way to see if a string has a capital letter anywhere in it?

example:

$str = "Has a capital letter."

if ($str has a capital letter) {
do this;
}

 

I don't think it is effective method, but:

$str = "Has a capital letter.";
if ($str!=strtolower($str)){
  echo "+";
}

PHP:

 

I think you can do a preg_match for the first letter in the string. I'm not sure on the exact regex, but pcre allows you to match by upper or lower case letters independently [A-Z] or [a-z].

Something like;

if(preg_match('/[A-Z]/',trim($string['0']))){

//uppercase letter

} else {

//Not uppercase

}

PHP:

The above post would work, but would return false if there was any uppercase letter, not just the first letter.