variable in function

Hello, I have a problem with variables, How can I fix the problem?

the code:

$variable = "100";
$language = "english";

function($number){
$result = $number * 5;
$result = "your language ".$language." and the variable is ".$result;
return $result;
}

echo function($variable);

Code (markup):

p.s. I want to use like that function($number) , please don't say that "use this function($number, $lang)

 

can u tell y u can't use a function($num,$lang); ?

or may be something like this can work:

$variable = "100";
$language = "english";

function($number){
$result = $number * 5;
$result. = " and the variable is ".$result;
return $result;
}

echo  "your language ".$language.function($variable);

PHP:

 

here's the solution

$variable = "100";
$language = "english";

function($number){
global $language;
$result = $number * 5;
$result = "your language ".$language." and the variable is ".$result;
return $result;
}

echo function($variable);

Code (markup):