How to create collisions between sprites of an array

I have created several sprites with phaser and I have stored them in an array.

function createShip(x,y,angle,ship){
            var s = game.add.sprite(x,y,ship);
            s.rotation = angle;
            s.anchor.setTo(0.5,0.5);
            return s;
        }



for(var i in data){
                    if(others[i] == undefined && i != socket.id){
                        var d = data[i];
                        others[i] = createShip(d.x,d.y,d.angle,d.ship);
                    }
                    found[i] = true;

                    if(i != socket.id){
                        others[i].x = data[i].x;
                        others[i].y = data[i].y;
                        others[i].rotation = data[i].angle;
                        others[i].ship = data[i].ship;
                    }
                }

I have tried to add these lines of code that I saw in the Phaser documentation

game.physics.startSystem(Phaser.Physics.ARCADE);
game.physics.arcade.enable(others);

and in the Update function

game.physics.arcade.collide(others);

where others is the array that stores all the sprites, but this still does not work