/**
* Ensure that the used parameter name complies with the session
* restrictions defined for variable keys, as the parameter name
* is being used as a sesison-variable-key.
* @param string $parameterName The name of the session-variable-key used to store the current paging position.
* @return string $parameterName The sanitized session-variable-key.
*/
private static function sanitizeParameterName($parameterName)
{
// Important: As the parameter name is used as a session-variable-key,
// it must not exceed the allowed session-variable-key-length.
// Therefore, if required, the parameter name is hashed and cut to the
// maximum allowed session-variable-key-length.
if (strlen($parameterName) > \cmsSession::getVariableKeyMaxLength()) {
$parameterName = substr(md5($parameterName), 0, \cmsSession::getVariableKeyMaxLength());
}
return $parameterName;
}