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Codeigniter运用PHPExcel导出Excel文件

发布时间:2022-02-09 21:23:53 所属栏目:PHP教程 来源:互联网
导读:1.准备工作 下载PHPExcel:http://phpexcel.codeplex.com 这是个强大的Excel库,这里只演示导出Excel文件的功能,其中的大部分功能可能都用不着. 2. 安装PHPExcel到Codeigniter 1) 解压压缩包里的Classes文件夹中的内容到applicationlibraries目录下,目录结
  1.准备工作
 
  下载PHPExcel:http://phpexcel.codeplex.com
 
  这是个强大的Excel库,这里只演示导出Excel文件的功能,其中的大部分功能可能都用不着.
 
  2. 安装PHPExcel到Codeigniter
 
  1) 解压压缩包里的Classes文件夹中的内容到applicationlibraries目录下,目录结构如下:
 
  -- applicationlibrariesPHPExcel.php
 
  -- applicationlibrariesPHPExcel (文件夹)
 
  2)修改applicationlibrariesPHPExcelIOFactory.php 文件
 
  -- 将其类名从PHPExcel_IOFactory改为IOFactory,遵从CI类命名规则.
 
  -- 将其构造函数改为public
 
  3. 安装完毕,写一个导出excel的控制器(Controller),代码如下:
 
  class Table_export extends CI_Controller {
    
      function __construct()
      {
          parent::__construct();
    
          // Here you should add some sort of user validation
          // to prevent strangers from pulling your table data
      }
    
      function index($table_name)
      {
          $query = $this->db->get($table_name);
    
          if(!$query)
              return false;
    
          // Starting the PHPExcel library
          $this->load->library('PHPExcel');
          $this->load->library('PHPExcel/IOFactory');
    
          $objPHPExcel = new PHPExcel();
          $objPHPExcel->getProperties()->setTitle("export")->setDescription("none");
    
          $objPHPExcel->setActiveSheetIndex(0);
    
          // Field names in the first row
          $fields = $query->list_fields();
          $col = 0;
          foreach ($fields as $field)
          {
              $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($col, 1, $field);
              $col++;
          }
    
          // Fetching the table data
          $row = 2;
          foreach($query->result() as $data)
          {
              $col = 0;
              foreach ($fields as $field)
              {
                  $objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($col, $row, $data->$field);
                  $col++;
              }
    
              $row++;
          }
    
          $objPHPExcel->setActiveSheetIndex(0);
    
          $objWriter = IOFactory::createWriter($objPHPExcel, 'Excel5');
    
          // Sending headers to force the user to download the file
          header('Content-Type: application/vnd.ms-excel');
          header('Content-Disposition: attachment;filename="Products_'.date('dMy').'.xls"');
          header('Cache-Control: max-age=0');
    
          $objWriter->save('php://output');
      }
    
  }
  方法二,代码如下:
 
  Excel Plugin  
  The following plugin will generate a tab-delimited file, and feed it to the client as an Excel file.
  
  $this->load->plugin('to_excel');
  $this->db->use_table('tablename');
  $this->db->select('field1', 'field2');
  // run joins, order by, where, or anything else here
  $query = $this->db->get();
  to_excel($query, ['filename']); // filename is optional, without it, the plugin will default to 'exceloutput'
  
  So you could run:
  
  to_excel($query, 'myfile'); // outputs myfile.xls
  to_excel($query); // outputs exceloutput.xls
  // you could also use a model here
  to_excel($this->model_name->functioncall());
  
  /system/plugins/to_excel_pi.php
  
  <?php if (!defined('BASEPATH')) exit('No direct script access allowed');
  
  /*
  * Excel library for Code Igniter applications
  * Author: Derek Allard, Dark Horse Consulting, www.darkhorse.to, April 2006
  */
  
  function to_excel($query, $filename='exceloutput')
  {
       $headers = ''; // just creating the var for field headers to append to below
       $data = ''; // just creating the var for field data to append to below
        
       $obj =& get_instance();
        
       $fields = $query->field_data();
       if ($query->num_rows() == 0) {
            echo '<p>The table appears to have no data.</p>';
       } else {
            foreach ($fields as $field) {
               $headers .= $field->name . "t";
            }
        
            foreach ($query->result() as $row) {
                 $line = '';
                 foreach($row as $value) {                                             
                      if ((!isset($value)) OR ($value == "")) {
                           $value = "t";
                      } else {
                           $value = str_replace('"', '""', $value);
                           $value = '"' . $value . '"' . "t";
                      }
                      $line .= $value;
                 }
                 $data .= trim($line)."n";
            }
             
            $data = str_replace("r","",$data);
                            
            header("Content-type: application/x-msdownload");
            header("Content-Disposition: attachment; filename=$filename.xls");
            echo "$headersn$data";   
       }
  }
  ?>
 

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