<?php
//Excel操作类
class Excel{
	public $excel;
	public $documentRoot;

	function __construct(){
		Yii::$enableIncludePath = false;
		$this->documentRoot = Yii::app()->basePath."/../";
		require_once($this->documentRoot."lib/plugins/phpexcel/PHPExcel.php");
		require_once($this->documentRoot."lib/plugins/phpexcel/PHPExcel/Writer/Excel2007.php");
		$this->excel = new PHPExcel();
	}
	
	public function export($rs, $fileName){
		$colNumber = array("A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", 
			"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z");
		
		$excel = $this->excel;
		$writer = new PHPExcel_Writer_Excel2007($excel);
		$writer->setOffice2003Compatibility(true);
		
		$excel->getProperties()->setCreator("互教教育");
		$excel->getProperties()->setLastModifiedBy("互教教育");
		$excel->getProperties()->setTitle("Document");
		$excel->getProperties()->setSubject("Document");
		$excel->getProperties()->setDescription("Generated with PHP");
		$excel->getProperties()->setKeywords("office2007 openxml php");
		$excel->getProperties()->setCategory("result");
		
		$excel->setActiveSheetIndex(0);
		$sheet = $excel->getActiveSheet();
		
		$rowsCount = count($rs);
		$colsCount = count(current($rs));
		for($i = 0; $i < $rowsCount; $i++){
			for($j = 0; $j < $colsCount; $j++){
				if($j === 0)
					$val = current($rs[$i]);
				else
					$val = next($rs[$i]);
				
				$sheet->setCellValue($colNumber[$j].($i + 1), $val);
			}
		}
        ob_end_clean();
        ob_start();
		header("Content-Type: application/force-download"); 
		header("Content-Type: application/octet-stream"); 
		header("Content-Type: application/download"); 
		header("Content-Disposition:inline;filename={$fileName}.xlsx"); 
		header("Content-Transfer-Encoding: binary"); 
		header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT"); 
		header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); 
		header("Pragma: no-cache"); 
		$writer->save("php://output");
	}
	
	public function read($file){
		$sheetData = array();
		
		if($file){
			$mValues = "";
			$sValues = "";
			// 导入PHPExcel类
			require_once($this->documentRoot."lib/plugins/phpexcel/PHPExcel/IOFactory.php");
			
			// 读取Excel文档
			$objPHPExcel = 	PHPExcel_IOFactory::load($file);
			$sheetData 	 = 	$objPHPExcel->getActiveSheet()->toArray(null,true,true,true);
			
			// 去掉导航
			unset($sheetData[1]);
			$sheetData = Filter::act($sheetData);
			//krsort($sheetData);
		}
		
		return $sheetData;
	}
}