Update a Thingspeak Channel
entryID=thingspeak_update(channelID,privacy,datastruct,apiWriteKey,apiReadKey)
ID of the channel in ThingSpeak
Specify whether the channel is 'public' or 'private'
The data structure created using thingspeak_newentry
Write API Key of the channel. The Write Key can be used as the Read API Key as well.
Read API Key of the channel.
The entry ID
Updates a ThingSpeak channel using the data structure created by thingspeak_newentry.