PHPexcel之读取表格（三）

一，其实针对文件的读取，PHPExcel提供了很多格式的文件，可以看下底层封装，支持各种常用和不常用的文件类型支持。，针对不同的类型都有相应的文件处理类 PHPExcel_Reader_xxxx.php

　　

public static function createReaderForFile($pFilename)
    {
        // First, lucky guess by inspecting file extension
        $pathinfo = pathinfo($pFilename);

        $extensionType = null;
        if (isset($pathinfo['extension'])) {
            switch (strtolower($pathinfo['extension'])) {
                case 'xlsx':            //    Excel (OfficeOpenXML) Spreadsheet
                case 'xlsm':            //    Excel (OfficeOpenXML) Macro Spreadsheet (macros will be discarded)
                case 'xltx':            //    Excel (OfficeOpenXML) Template
                case 'xltm':            //    Excel (OfficeOpenXML) Macro Template (macros will be discarded)
                    $extensionType = 'Excel2007';
                    break;
                case 'xls':                //    Excel (BIFF) Spreadsheet
                case 'xlt':                //    Excel (BIFF) Template
                    $extensionType = 'Excel5';
                    break;
                case 'ods':                //    Open/Libre Offic Calc
                case 'ots':                //    Open/Libre Offic Calc Template
                    $extensionType = 'OOCalc';
                    break;
                case 'slk':
                    $extensionType = 'SYLK';
                    break;
                case 'xml':                //    Excel 2003 SpreadSheetML
                    $extensionType = 'Excel2003XML';
                    break;
                case 'gnumeric':
                    $extensionType = 'Gnumeric';
                    break;
                case 'htm':
                case 'html':
                    $extensionType = 'HTML';
                    break;
                case 'csv':
                    // Do nothing
                    // We must not try to use CSV reader since it loads
                    // all files including Excel files etc.
                    break;
                default:
                    break;
            }

            if ($extensionType !== null) {
                $reader = self::createReader($extensionType);
                // Let's see if we are lucky
                if (isset($reader) && $reader->canRead($pFilename)) {
                    return $reader;
                }
            }
        }

二，以xlsx为例，读取单个表格只有一个sheet

　　

require_once dirname(__FILE__) . '/PHPExcel/Classes/PHPExcel/IOFactory.php';

$objReader = PHPExcel_IOFactory::createReader('Excel2007');
$objPHPExcel = $objReader->load("test.xlsx");        //返回PHPExcel对象
$activeSheet = $objPHPExcel->getActiveSheet();
$data = $activeSheet->toArray();
print_r($data);

//针对data进行业务处理
.......

三，针对多个sheet，PHPExcel也提供了迭代读取的办法

　　

//针对多个sheet的读取
foreach($objPHPExcel->getWorksheetIterator() as $workSheet){
       //可以直接读取整个sheet的结果
       $data = $workSheet->toArray();
        //业务处理
       ........
    
    /*
　　　* 按行循环迭代 每一行，然后再每一个列　
　　echo 'Worksheet - ' , $workSheet->getTitle() , PHP_EOL;
    foreach($workSheet->getRowIterator() as $row){
        echo '    Row number - ' , $row->getRowIndex() , PHP_EOL;
        
        $cellIterator = $row->getCellIterator();
        $cellIterator->setIterateOnlyExistingCells(false);
        foreach ($cellIterator as $cell) {
            if (!is_null($cell)) {
                echo '        Cell - ' , $cell->getCoordinate() , ' - ' , $cell->getCalculatedValue() , PHP_EOL;
            }
        }
    }
　　*/

　　/**  按列循环，一列一旬
    foreach ($objPHPExcel->getWorksheetIterator() as $worksheet) {
    echo 'Worksheet - ' , $worksheet->getTitle() , EOL;

    foreach ($worksheet->getColumnIterator() as $column) {
        echo '    Column index - ' , $column->getColumnIndex() , EOL;

        $cellIterator = $column->getCellIterator();
        $cellIterator->setIterateOnlyExistingCells(true); // Loop all cells, even if it is not set
        foreach ($cellIterator as $cell) {
            if (!is_null($cell)) {
                echo '        Cell - ' , $cell->getCoordinate() , ' - ' , $cell->getCalculatedValue() , EOL;
            }
        }
    }
    }
    *


}