How to find out how many rows and columns to read from an Excel file with PHPExcel?

$objPHPExcel->setActiveSheetIndex(0)->getHighestColumn();

and

$objPHPExcel->setActiveSheetIndex(0)->getHighestRow();

or

$objPHPExcel->setActiveSheetIndex(0)->calculateWorksheetDimension();

which returns a range as a string like A1:AC2048

although trailing blank rows and columns are included in these.

EDIT

or you can use the iterators to loop through the existing rows and columns to get each cell within the worksheets used range. See /Tests/28iterator.php in the production distribution for an example. The iterators can be set to ignore blanks.

From the 1.7.6 and below PHPExcel versions it is possible to get worksheet information without reading whole file:

$objReader     = PHPExcel_IOFactory::createReader("Excel2007"); 
$worksheetData = $objReader->listWorksheetInfo($uploadedfile);
$totalRows     = $worksheetData[0]['totalRows'];
$totalColumns  = $worksheetData[0]['totalColumns'];