Error in anonymous function does not allow compilation [closed]

I'm studying a PHP OO book. You have an example of an anonymous function, but it is giving error:

# FUNÇÂO ANONIMA
$remove_acento = function($str) {
$a = array(
    'à', 'á', 'â', 'ã', 'ä', 'ç', 'è', 'é', 'ê', 'ë', 'ì', 'í', 'î', 'ï', 'ñ', 'ò', 'ó',
    'ô', 'õ', 'ö', 'ù', 'ú', 'û', 'ü', 'ý', 'ÿ', 'À', 'Á', 'Â', 'Ã', 'Ä', 'Ç', 'È', 'É',
    'Ê', 'Ë', 'Ì', 'Í', 'Î', 'Ï', 'Ñ', 'Ò', 'Ó', 'Ô', 'Õ', 'Ö', 'Ù', 'Ú', 'Û', 'Ü', 'Ý'
);
$b = array(
    'a', 'a', 'a', 'a', 'a', 'c', 'e', 'e', 'e', 'e', 'i', 'i', 'i', 'i', 'n', 'o', 'o',
    'o', 'o', 'o', 'u', 'u', 'u', 'u', 'y', 'y', 'A', 'A', 'A', 'A', 'A', 'C', 'E', 'E',
    'E', 'E', 'I', 'I', 'I', 'I', 'N', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'Y'
);
return str_replace($a, $b, $str);
}

print $remove_acento('José da Conceição');

When executed, the following error occurs:

  

Parse error: syntax error, unexpected 'print' (T_PRINT)

I do not see a direct error in this code. Use PHP 7.0.8.