CSV 文件處理PHP類

<?php
/**


CSV 文件處理類
*/
class Csv{
 public $csv_array; //csv數組數據
 public $csv_str;  //csv文件數據
public function __construct($param_arr, $column){

 $this->csv_array = $param_arr;
 $this->path = $path;
 $this->column = $column;

}
/**

導出
*/
public function export(){
 if(empty($this->csv_array) || empty($this->column)){

 return false;

}
 $param_arr = $this->csv_array;
 unset($this->csv_array);
 $export_str = implode(',',$param_arr['nav'])."n";
 unset($param_arr['nav']);
 //組裝數據
 foreach($param_arr as $k=>$v){

 foreach($v as $k1=>$v1){
     $export_str .= implode(',',$v1)."n";
 }

}
 //將$export_str導出
 header( "Cache-Control: public" );
 header( "Pragma: public" );
 header("Content-type:application/vnd.ms-excel");
 header("Content-Disposition:attachment;filename=txxx.csv");
 header('Content-Type:APPLICATION/OCTET-STREAM');
 ob_start();

//  $file_str=  iconv("utf-8",'gbk',$export_str);
 ob_end_clean();
 echo $export_str;
}
/**

導入
/
public function import($path,$column = 3){
 $flag = flase;
 $code = 0;
 $msg = '未處理';
 $filesize = 1; //1MB
 $maxsize = $filesize  1024 * 1024;
 $max_column = 1000;
//檢測文件是否存在
 if($flag === flase){

 if(!file_exists($path)){
     $msg = '文件不存在';
     $flag = true;
 }

}
 //檢測文件格式
 if($flag === flase){

 $ext = preg_replace("/.*.([^.]+)/","$1",$path);
 if($ext != 'csv'){
     $msg = '只能導入CSV格式文件';
     $flag = true;
 }

}
//檢測文件大小
 if($flag === flase){

 if(filesize($path)>$maxsize){
     $msg = '導入的文件不得超過'.$maxsize.'B文件';
     $flag = true;
 }

}
//讀取文件
 if($flag == flase){

 $row = 0;
 $handle = fopen($path,'r');
 $dataArray = array();
 while($data = fgetcsv($handle,$max_column,",")){
     $num = count($data);
     if($num < $column){
         $msg = '文件不符合規格真實有：'.$num.'列數據';
         $flag = true;
         break;
     }

     if($flag === flase){
         for($i=0;$i<3;$i++){
             if($row == 0){
                 break;
             }
             //組建數據
             $dataArray[$row][$i] = $data[$i];
         }
     }
     $row++;
 }

}
return $dataArray;
}
}




$param_arr = array(
                'nav'=>array('用戶名','密碼','郵箱'),
                array(0=>array('xiaohai1','123456','xiaohai1@zhongsou.com'),
                      1=>array('xiaohai2','213456','xiaohai2@zhongsou.com'),
                      2=>array('xiaohai3','123456','xiaohai3@zhongsou.com')
                ));
$column = 3;
$csv = new Csv($param_arr, $column);
//$csv->export();
$path = 'C:Documents and SettingsAdministratorLocal SettingsTemptxxx.csv';
$import_arr = $csv->import($path,3);
var_dump($import_arr);
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