User Agent Detector provides two functions that tests useragent strings to identify spiders and small screen devices.

It can be used for useragent cloaking, delivering lite content to PDA's and cellphones, or solving any other problem that requires delivering content based on user agent.

Functions:

is_spider()

- Function for testing if a useragent matches that of a spider
- Returns useragent string if true

is_smallscreen()

- Function for testing if a useragent matches that of a small screen device, ie PDA or cellphone
- Returns useragent string if true