<?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 SettingsAdministratorLocal SettingsTemptxxx.csv';  $import_arr = $csv->import($path,3);  var_dump($import_arr);    ?>