public function validate()
{
// According to the GA documentation, there is a limit to the combined size of
// name and value of 64 bytes after URL encoding,
// see http://code.google.com/apis/analytics/docs/tracking/gaTrackingCustomVariables.html#varTypes
// and http://xahlee.org/js/google_analytics_tracker_2010-07-01_expanded.js line 563
if (strlen(Util::encodeUriComponent($this->name . $this->value)) > 64) {
Tracker::_raiseError('Custom Variable combined name and value encoded length must not be larger than 64 bytes.', __METHOD__);
}
}
/**
* @link http://xahlee.org/js/google_analytics_tracker_2010-07-01_expanded.js line 575
* @param \UnitedPrototype\GoogleAnalytics\Internals\ParameterHolder $p
* @return \UnitedPrototype\GoogleAnalytics\Internals\ParameterHolder
*/
protected function buildCustomVariablesParameter(ParameterHolder $p)
{
$customVars = $this->tracker->getCustomVariables();
if ($customVars) {
if (count($customVars) > 5) {
// See http://code.google.com/intl/de-DE/apis/analytics/docs/tracking/gaTrackingCustomVariables.html#usage
Tracker::_raiseError('The sum of all custom variables cannot exceed 5 in any given request.', __METHOD__);
}
$x10 = new X10();
$x10->clearKey(self::X10_CUSTOMVAR_NAME_PROJECT_ID);
$x10->clearKey(self::X10_CUSTOMVAR_VALUE_PROJECT_ID);
$x10->clearKey(self::X10_CUSTOMVAR_SCOPE_PROJECT_ID);
foreach ($customVars as $customVar) {
// Name and value get encoded here,
// see http://xahlee.org/js/google_analytics_tracker_2010-07-01_expanded.js line 563
$name = Util::encodeUriComponent($customVar->getName());
$value = Util::encodeUriComponent($customVar->getValue());
$x10->setKey(self::X10_CUSTOMVAR_NAME_PROJECT_ID, $customVar->getIndex(), $name);
$x10->setKey(self::X10_CUSTOMVAR_VALUE_PROJECT_ID, $customVar->getIndex(), $value);
if ($customVar->getScope() !== null && $customVar->getScope() != CustomVariable::SCOPE_PAGE) {
$x10->setKey(self::X10_CUSTOMVAR_SCOPE_PROJECT_ID, $customVar->getIndex(), $customVar->getScope());
}
}
$p->utme .= $x10->renderUrlString();
}
return $p;
}
