(PECL gender >= 0.9.0)
Gender\Gender::isNick — Check if the name0 is an alias of the name1.
$name0
   , string $name1
   [, integer $country
  ] )Check whether the name0 is a nick of the name1.
name0
        Name to check.
name1
        Name to check.
country
        Country id identified by Gender class constant. If ommited ANY_COUNTRY is used.
   Returns TRUE on success or FALSE on failure.