php: how to sanitize many variables at the same time?

This are my php functions:

function test($a,$b,$c) {
 sanitize($a,$b,$c);
 echo "$a $b $c";
}


function test2($m,$n) {
 sanitize($m,$n);
 echo "$m $n";
}

function sanitize() {
 // escape strings with stripslashes (and other filters later)
}

test2("he'llo", "wo'rld");

test("he'llo", "wo'rld","hap'y");

Is it possible to keep test and test2 function ?

I just want to avoid having 3 lines :

$a=sanitize($a); 
$b=sanitize($b);
$c=sanitize($c);

and have just:

sanitize($a, $b, $c);

Answer

Php 5.6+

function sanitize( &...$args){

    foreach($args as &$arg){
        //your sanitising code here, eg:
       $arg = strtolower($arg);
    }
}