<?php
/**
 * CSV 文件处理类
 */
class Csv{
  public $csv_array; //csv数组数据
  public $csv_str; //csv文件数据
  public function __construct($param_arr, $column){
    $this->csv_array = $param_arr;
    $this->path = $path;
    $this->column = $column;
  }
  /**
   * 导出
   * */
  public function export(){
    if(empty($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($param_arr[\'nav\']);
    //组装数据
    foreach($param_arr as $k=>$v){
      foreach($v as $k1=>$v1){
        $export_str .= implode(\',\',$v1).\"n\";
      }
    }
    //将$export_str导出
    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 $export_str;
  }
  /**
   * 导入
   * */
  public function import($path,$column = 3){
    $flag = flase;
    $code = 0;
    $msg = \'未处理\';
    $filesize = 1; //1MB
    $maxsize = $filesize * 1024 * 1024;
    $max_column = 1000;
 
    //检测文件是否存在
    if($flag === flase){
      if(!file_exists($path)){
        $msg = \'文件不存在\';
        $flag = true;
      }
    }
    //检测文件格式
    if($flag === flase){
      $ext = preg_replace(\"/.*.([^.]+)/\",\"$1\",$path);
      if($ext != \'csv\'){
        $msg = \'只能导入CSV格式文件\';
        $flag = true;
      }
    }
    //检测文件大小
    if($flag === flase){
      if(filesize($path)>$maxsize){
        $msg = \'导入的文件不得超过\'.$maxsize.\'B文件\';
        $flag = true;
      }
    }
    //读取文件
    if($flag == flase){
      $row = 0;
      $handle = fopen($path,\'r\');
      $dataArray = array();
      while($data = fgetcsv($handle,$max_column,\",\")){
        $num = count($data);
        if($num < $column){
          $msg = \'文件不符合规格真实有：\'.$num.\'列数据\';
          $flag = true;
          break;
        }
        if($flag === flase){
          for($i=0;$i<3;$i++){
            if($row == 0){
              break;
            }
            //组建数据
            $dataArray[$row][$i] = $data[$i];
          }
        }
        $row++;
      }
    }
    return $dataArray;
  }
}
$param_arr = array(
\'nav\'=>array(\'用户名\',\'密码\',\'邮箱\'),
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 Settings\\Administrator\\Temp\\txxx.csv\';
$import_arr = $csv->import($path,3);
var_dump($import_arr);
?>