Load a unity texture from internet

LoadTexture.cs

private IEnumerator FetchSprite(string imageURL)
{
    //create a www instance
    WWW www = new WWW(imageURL);

    //build a new texture
    Texture2D tex = new Texture2D(1, 1, TextureFormat.ARGB32, false);
    //set filter mode to point (pixel art)
    tex.filterMode = FilterMode.Point;

    //wait for www
    yield return www;

    //if there was no error loading sprite
    if (string.IsNullOrEmpty(www.error))
    {
        //load the texture from www into the newly created texture2d above
        www.LoadImageIntoTexture(tex);

        //create an index of sprites for multi sprite
        Sprite sprites = new Sprite[60];

        //the size of 1 sprite
        int spriteWidth = 32;
        int spriteHeight = 48;

        //loop over 15 frames for each of 4 directions
        for(int row=0; row<15; row++)
        {
            for(int col=0; col<4; col++)
            {
                //find the X position of sprite
                int x = col * spriteWidth;
                //find the Y position of sprite (for some reason Unity likes to use a Y position from the bottom of the image)
                int y = tex.height - ((row + 1) * spriteHeight);
                //sprite index
                int idx = (row * 15) + col;

                //create the sprite
                sprites[idx] = Sprite.Create(tex,   //sprite texture
                                                new Rect(x, y, spriteWidth, spriteHeight), //bounding box of sprite
                                                new Vector2(0.5f, 0f), //anchor point of sprite: bottom center
                                                16f //pixels per inch
                                            );
                //name the sprite
                sprites[idx].name = idx.ToString();
            }
        }
    } else {
        //failed loading sprite
        Debug.LogError(www.error + ": " + imageURL);
    }
}