QUESTION if plugin is active ...

[shawn_a]

no function in 3.3.x
but you would do it like this.

PHP Code:

/**
 * check if a plugin is active
 * determine if a plugin is active
 *
 * @since 3.4
 * @param  string $pluginid
 * @return bool   returns true if active
 */
function pluginIsActive($pluginid){
    GLOBAL $live_plugins;
    return isset($live_plugins[$pluginid.'.php']) && ($live_plugins[$pluginid.'.php'] == 'true' || $live_plugins[$pluginid.'.php'] === true);
}