How to send data from ESP8266 to PHP script on website?

If you look at my new edited SendData() function above you will notice the use of:

	String dataline; //Added this to build command outside of GET call
	dataline = "source=" + sensor + "&temp=" + temp + "&humid=" + humid;

But I am getting the errors shown above when I use that String construct.
So something else should be the problem here....