The Signal class is missing a handy way to remove all bindings from a certain context.

[lucbloom]

Phaser.Signal.prototype.removeAllWithContext: function (context) {
        for (var i = 0; i < this._bindings.length; ++i) {
            var b = this._bindings[i];
            if (b.context === context) {
                b._destroy();
                this._bindings.splice(i, 1);
            }
        }
    },

Then, in my game code I can do:

onSceneExit = function()
{
       this.game.onResize.removeAllWithContext(this);
}

[photonstorm]

Nice idea, but I think easier to roll into existing removeAll as optional parameter.

[Phaiax]

I did't looked for the implication, but i noticed you were using once
destroy();
and once
_destroy();

[photonstorm]

Yes, fixed - I hate the code in the Signal class, it needs a total review imho - I'm sure it is causing slow-downs through-out Phaser.