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();$path = "C:Documents and SettingsAdministratorTemp xxx.csv";$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。
