PHP实现CSV文件的导入和导出类

本文实例讲述了PHP实现CSV文件的导入和导出类。分享给大家供大家参考。具体如下：<?

本文实例讲述了PHP实现CSV文件的导入和导出类。分享给大家供大家参考。具体如下：

<?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);
?>

希望本文所述对大家的php程序设计有所帮助。