批量下载（一）

       最近有个需求：由于每个礼包生成卡号后，下载的时候还要一个一个下载改文件名非常不方便，于是增加一个如图所示批量下载的功能。

大致逻辑:读取所有所勾选的的卡号文件中的内容，然后将所有卡号内容以卡号文件名分组汇总到excel表中， 代码如下：

Card.tpl

<script language="javascript"> 
function batchDownload() {
        if(confirm("批量下载？")) {
            $("#myform").attr("action", "<{$REQUEST_URI}>?action=batchDownload").submit();
        }
    }
</script>
<form name="myform" id="myform" method="post" action="<{$REQUEST_URI}>">
   <table class="DataGrid" style=" 100%">
  <tr>
      <th><{$CARD_CODE_FILE}></th>
      <th><{$GIFT_BAG_ACTIVITY}>ID</th>
      <th><{$VALIDITY}></th>
      <th><{$AGENTS}>+<{$SER}></th>
      <th><{$IS_UNIQUE_GIFT_BAG}></th>
      <th><{$CARD_CODE_TYPE}></th>
      <th><{$CARD_CODE_COUNT}></th>
      <th><{$NO_ACTIVE}></th>
      <th><{$OPERATE}></th>
      <th><input type="button" value="批量下" onclick="batchDownload()"></th>
      <th><{$CREATE_TIME}></th>
      <th><{$CREATE_TYPE}></th>
      <th><{$OPERATE}></th>
      <th>
          <input type="button" value="<{$BATCH_DEL}>" onclick="batchDelete()">
          <input type="hidden" name="token" value="<{$token}>">
      </th>
  </tr>
  <{if $card_list}>
  <{foreach from=$card_list item=row key=key}>
    <{if $row.file_card % 2 == 0}>
  <tr align="center" class='odd'>
    <{else}>
  <tr align="center">
    <{/if}>
    <td><{$key}></td>
    <td><{$row.file_card}></td>
    <td><{if $row.expired eq 1}><font color="red"><{$row.startTime}><{$TO}><{$row.endTime}></font><{else}><{$row.startTime}><{$TO}><{$row.endTime}><{/if}></td>
    <td style="word-wrap: break-word; word-break: break-all;"><{$row.agent}>&nbsp;<{$row.server}></td>
    <td><{$row.channel}></td>
    <td><{$row.file_type}> | <{$row.file_type_name}></td>
    <td><{$row.file_num}></td>
    <td><a onclick="doSelectUnused('<{$row.file_card}>')" title="<{$GET_NO_ACTIVE_COUNT}>"><{$GET}></a><font id="<{$row.file_card}>msg"></font></td>
    <td>
        <input type="button" onclick="doDownload('<{$key}>');" value="<{$DOWNLOAD}>" />
    </td>
    <td><input type="checkbox" name="downloadList[<{$key}>]"></td>
    <td><{$row.log_time}></td>
    <td><{$row.create_type}></td>
    <td><{if $row.delete eq 1}><input type="button" onclick="doDelete('<{$row.file_card}>','<{$key}>')" value="<{$DELETE}>" /><{else}><input type="button" onclick="doDelete('<{$row.file_card}>','<{$key}>')" value="<{$VIOLENCE_DEL}>" /><{/if}></td>
    <td><{if $row.expired eq 1}><input type="checkbox" name="deleteList[<{$row.file_card}>]" value="<{$key}>"><{else}>&nbsp;<{/if}></td>
  </tr>
  <{/foreach}>
  <{else}>
  <tr>
      <td colspan="4"><{$SERVER_NO_CARD_FILE}></td>
  </tr>
    <{/if}>
</table>


</form>

Card.php

if($action == 'batchDownload') {
    $downList = R('downList');
    if(is_array($downList)) {
        $Card ->batchDownload($downList);
    } else {
        $msg[] = '先选择要下载的卡号';
    }
}

Card.class.php

class Card {
     public function batchDownload($downList) {
        //先判断下数组key  value是否对应
        foreach($downList as $card_id => $txt_name) {
            $_card_file_arr = explode('_', $txt_name);
            if($_card_file_arr[1] != $card_id) {
                break;
            }
            //获取txt文件内容
            $card_file = $this ->getDir(). '/'. $txt_name;
            $cbody = file($card_file);

            $f_type = $_card_file_arr[2];
            $f_type_name = isset($this ->card_type[$f_type]) ? $this ->card_type[$f_type] : 'unknown';
            $filename2 = $f_type . '_' . $f_type_name . '_' . $txt_name;
            
            //根据数据长度进行分组，便于后面排序 eg:5-18_新手礼包8_1560310515_19_18_5.txt
            $length = count($cbody);
            $arr[$length.'-'.$filename2] = $cbody;
        }

        //将排序的键存进数组
        foreach ($arr as $length_name => $value) {
            $len_arr = explode('-',$length_name);
            $key_arrays[] = $len_arr[0]; 
  
        }
        array_multisort($key_arrays,SORT_DESC,$arr);  
        //组装数据格式
        $data = array();
        foreach ($arr as $key => $value) {
            $card_arr = explode('-',$key);
            $head_arr[] = $card_arr[1];
            foreach ($value as $k => $v) {
                $data[$k][] = $v;
            }
        }
        $fileName = "download_card".time().".xls";
        header("Content-type:application/vnd.ms-excel");
        header("Content-Disposition:attachment;filename=".$fileName);
        
        $j = 0;
        foreach ($data as $key => $value) {
            $body_arr[$j] = $value;
            $j++;
        }
        $MyExcel = new MyExcel();
        echo $MyExcel ->htmlExcel($head_arr, $body_arr);
        exit;
    }
}

MyExcel.class.php

class MyExcel {

    public function htmlExcel($head, $body) {
        $head_str = '';
        $body_str = '';
        
        if( ! empty($head) ) {
            foreach ($head as $row) {
                $head_str .= "<td>{$row}</td>";
            }
            $head_str = '<tr>' . $head_str . '</tr>';
        }
        
        if( ! empty($body) ) {
            foreach ($body as $key => $value) {
                $body_str .= '<tr>';
                foreach ($value as $k => $val) {
                    $body_str .= "<td>{$val}</td>";
                }
                $body_str .= '</tr>';
            }
        }    
        $html = '
            <html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40">
            <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
            <html>
                <head>
                    <meta http-equiv="Content-type" content="text/html;charset=UTF-8" />
                    <style id="Classeur1_16681_Styles"></style>
                </head>
                <body>
                    <div id="Classeur1_16681" align=center x:publishsource="Excel">
                        <table x:str border=1 cellpadding=0 cellspacing=0 style="border-collapse: collapse">'
                            . $head_str
                            . $body_str
                            . '
                        </table>
                    </div>
                </body>
            </html>';    
        return $html;
    }
}

结果如图所示：