login(); if(is_a($l, "Exception")) { echo "Error : cannot login to $zimbraServer\n"; echo $l->getMessage()."\n"; exit(); } $accountManager = new Zm_Account($auth); $r = $accountManager->accountExists("test3@thurdata.local"); echo "$r\n"; $r = $accountManager->accountExists("test5@thurdata.local"); echo "$r\n";