(PHP 8 >= 8.4.0)
mb_lcfirst — Make a string's first character lowercase
   Performs a multi-byte safe lcfirst() operation,
   and returns a string with the first character of
   string lowercased.
  
stringencodingThe encoding
parameter is the character encoding. If it is omitted or null, the internal character
encoding value will be used.
Returns the resulting string.
