require_once('./excel/Classes/PHPExcel.php');
//require_once('./excel/Classes/PHPExcel/IOFactory.php');
$inputFileName = './xls/a.xls';
  


function readxls($inputFileName){
	$objReader = new PHPExcel_Reader_Excel5();
	$objPHPExcel = $objReader->load($inputFileName);
	//print_r($objPHPExcel);
	$tmp  =  array();
     $objWorksheet = $objPHPExcel->getActiveSheet();
     $i = 0;
     foreach($objWorksheet->getRowIterator() as $row){
               $cellIterator = $row->getCellIterator();
               $cellIterator->setIterateOnlyExistingCells(false);
 
               foreach($cellIterator as $cell){
				$tmp[$i][] = $cell->getValue();
               }    
               $i++;
     }
	 return $tmp;
}

	$con = readxls($inputFileName);
	 
	 print_r($con);

版本2：
function readxls($inputFileName){
	
	require_once('/www/web/wwwroot/public_html/system/plugins/PHPExcel/PHPExcel.php');
	
	$type = strtolower( pathinfo($inputFileName, PATHINFO_EXTENSION) );

 

	if (!file_exists($inputFileName)) {
	  die('no file!');
	}

	//根据不同类型分别操作
	if( $type=='xlsx'||$type=='xls' ){
	  $objPHPExcel = PHPExcel_IOFactory::load($inputFileName);
	}else if( $type=='csv' ){
	  $objReader = PHPExcel_IOFactory::createReader('CSV')
		->setDelimiter(',')
		->setInputEncoding('GBK') //不设置将导致中文列内容返回boolean(false)或乱码
		->setEnclosure('"')
		->setLineEnding("\r\n")
		->setSheetIndex(0);
	  $objPHPExcel = $objReader->load($path);

	}else{
	  die('Not supported file types!');
	}	
 
    $tmp  =  array();
     $objWorksheet = $objPHPExcel->getActiveSheet();
     $i = 0;
     foreach($objWorksheet->getRowIterator() as $row){
               $cellIterator = $row->getCellIterator();
               $cellIterator->setIterateOnlyExistingCells(false);
  
               foreach($cellIterator as $cell){
                $tmp[$i][] = $cell->getValue();
               }   
               $i++;
     }
     return $tmp;
}