i need your help, i see that you have many php tutorials for wallpaper websites.

i have a wallpaper website and i want to be able to get they keywords from search engines referal url

lets say i have this url:

$url = "http://www.google.com/search?hl=es&q=wallpaperama%20free%20amazing%20wallpapers&&client=firefox"


as you can see, from this url i only want to get the part that says:

$url =wallpaperama free amazing wallpapers


the other stuff i dont care for

how can retrieve only these letters from my string. thank you