Clarification required on Connect PHP Analytics Method

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Hi,

We have a requirement wherein we need to fetch report data and save it as a CSV to a remote FTP location. Unlike SOAP API Analytics Method, Connect PHP method doesnt seem to have start, limit parameters.......can anybody clarify?

$ar= RNCPHP\AnalyticsReport::fetch( $report_id);

$arr= $ar->run( 0, $filters );

Thanks in advance...

~Suresh