Turning off WSDL cache

Image:Header_sample.gif

PHP has a tendency to store past sessions in its cache, to clear the problem add the following to the top of your scripts which have a login prior to execution: 

ini_set("soap.wsdl_cache_enabled", "0");

This will clear the cache so that you will not be logging into the wrong Force.com API

Retrieved from "http://wiki.apexdevnet.com/index.php/Turning_off_WSDL_cache"