SIMPLEPIE_USERAGENT

[SIMPLEPIE_NAME]/[SIMPLEPIE_VERSION] (Feed Parser; [SIMPLEPIE_URL]; Allow like Gecko) Build/[SIMPLEPIE_BUILD]
SimplePie/Razzleberry++ (Feed Parser; http://simplepie.org; Allow like Gecko) Build/20070521000000
SimplePie/1.0 (Feed Parser; http://simplepie.org; Allow like Gecko) Build/20070601000000

Defines SimplePie's default user agent string. Used as the default value for set_useragent().

Available from SimplePie 0.92-0.96; Since SimplePie 1.0

echo SIMPLEPIE_USERAGENT;