Excel表格数据转化到数据库里面

<?php  
header("Content-Type:text/html;charset=utf-8");  
include_once('PHPExcel.php');  
  
error_reporting(E_ALL);  
ini_set('display_errors', TRUE);  
ini_set('display_startup_errors', TRUE);  
//date_default_timezone_set('Europe/London');  
  
  
$PHPExcel=new PHPExcel();  
$filename = 'phone.xls';  
$exts = substr($filename,(strrpos($filename,".")+1));  
if($exts == 'xls'){  
    include_once('PHPExcel/Reader/Excel5.php');  
    $PHPReader=new \PHPExcel_Reader_Excel5();  
}else if($exts == 'xlsx'){  
    include_once('PHPExcel/Reader/Excel2007.php');  
    $PHPReader=new \PHPExcel_Reader_Excel2007();  
}  
$PHPExcel=$PHPReader->load($filename);  
  
$currentSheet=$PHPExcel->getSheet(0);  
$allColumn=$currentSheet->getHighestColumn();  
$allRow=$currentSheet->getHighestRow();  
for($currentRow=1;$currentRow<=$allRow;$currentRow++){  
    for($currentColumn='A';$currentColumn<=$allColumn;$currentColumn++){  
    
        $address=$currentColumn.$currentRow;  
        
        $data[$currentRow][$currentColumn]=$currentSheet->getCell($address)->getValue();  
    }  
}  
$json = json_encode($data);
try{  
  
    $dsn='mysql:host=localhost;dbname=kaoqing';
    $username='root';  
    $passwd='root';
    $pdo=new PDO($dsn,$username,$passwd);
    $pdo->query("SET NAMES utf8"); 
    
}catch(PDOException $e){ 
    echo $e->getMessage();  
}
$f = '';
foreach ($data as $item){
    $arr=[];
    $a=!empty($item['F'])?$item['F']:$f;
    
    $arr['depart']=$item['A'];
    $arr['name']=$item['B'];
    $arr['kaonumber']=$item['C'];
    $arr['time']=$item['D'];
    $arr['jinumber']=$item['E'];
    $arr['biannumber']=$f;
    $arr['type']=$item['G'];
    $arr['carnumber']=$item['H'];
    $arr['yuanyin'] = $item['I'];
    $reslut = $pdo->exec($sql);
    $sql = sprintf('INSERT INTO `%s` (`%s`) VALUES ("%s")','kaoqing',join( '`,`',array_keys($arr)),join('","',$arr));
     
    $reslut = $pdo->exec($sql);
}