I'm integrating the ARB in my magento site but I'm getting the following error
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 110
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 110
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 113
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 114
2014-04-07T13:00:22+00:00 ERR (3): Warning: substr() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 115
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 110
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 110
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 113
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 114
2014-04-07T13:00:22+00:00 ERR (3): Warning: substr() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 115
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 110
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 110
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 113
2014-04-07T13:00:22+00:00 ERR (3): Warning: strpos() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 114
2014-04-07T13:00:22+00:00 ERR (3): Warning: substr() expects parameter 1 to be string, array given in /var/www/mageqb/app/code/local/Excellence/Anetarb/Model/AuthorizeNetXMLResponse.php on line 115
Why do I'm getting such message? I'm using the php-sdk.