ucfirst
Uppercases the first character of a string.
Returns a copy of STRING with the first character converted to
uppercase and all other characters left unchanged. For ASCII first
characters, a single-byte in-place mutation is used. For Unicode
first characters, to_uppercase() may produce multiple characters
(e.g. the ffi ligature U+FB03).
Returns an empty string when given an empty string.
Synopsis
$result = ucfirst($string);
$result = ucfirst('hello'); # "Hello"