...
curl_cmd="curl --sslv3 --silent --cookie ${cookie} --cookie-jar ${cookie} --insecure "
...
unifi_login() {
    # authenticate against unifi controller
    ${curl_cmd} --data "login=login" --data "username=$username" --data "password=$password" $baseurl/login
}

unifi_logout() {
    # logout
    ${curl_cmd} $baseurl/logout
}

# cmd/stamgr
# authorize-guest(mac, minutes, [up=kbps, down=kbps, bytes=MB])
unifi_authorize_guest() {
    if [ $# -lt 2 ] ; then
        echo "Usage: $0 <mac> <minutes> [up=kbps] [down=kbps] [bytes=MB]"
        exit -1
    fi

    mac=$1
    minutes=$2
    other_payload=`named_args_to_payload "$@"`

    ${curl_cmd} --data "json={'cmd':'authorize-guest', 'mac':'${mac}', 'minutes':${minutes}${other_payload}}" $baseurl/api/cmd/stamgr
}

# stat/sta
unifi_list_sta() {
    ${curl_cmd} --data "json={}" $baseurl/api/stat/sta
}
...

	$url = "$unifi_url/login";
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_SSLVERSION, 3);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_COOKIEFILE, $unifi_cookies);
	curl_setopt($ch, CURLOPT_COOKIEJAR, $unifi_cookies);
	curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array('login'=>'login','username'=>$unifi_username,'password'=>$unifi_password)));
	curl_exec($ch);
	curl_close($ch);
...
	$url = "$unifi_url/api/stat/sta";
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_SSLVERSION, 3);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_COOKIEFILE, $unifi_cookies);
	curl_setopt($ch, CURLOPT_COOKIEJAR, $unifi_cookies);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query(array('json'=>'{}')));
	$res = curl_exec($ch);
	...
	curl_close($ch);

...
	$url = "$unifi_url/logout";
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_SSLVERSION, 3);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_COOKIEFILE, $unifi_cookies);
	curl_setopt($ch, CURLOPT_COOKIEJAR, $unifi_cookies);
	curl_exec($ch);
	curl_close($ch);