php_info() where the WSDL cache is held (
/tmp), but I don't necessarily know if it is safe to delete all files starting with WSDL.
Yes, I should be able to just delete everything from
/tmp, but I don't know what else this could effect if I delete any all WSDL files.
You can safely delete the WSDL cache files. If you wish to prevent future caching, use:
$client = new SoapClient('http://somewhere.com/?wsdl', array('cache_wsdl' => WSDL_CACHE_NONE) );
remove all wsdl* files in your /tmp folder on the server.
WSDL files are cached in your default location for all cache files defined in php.ini. Same location as your session files.