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这篇文章主要介绍了PHP实现CSV文件的导入和导出类,实例分析了php针对csv文件的操作技巧,非常具有实用价值,需要的朋友可以参考下
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。 | 
发表于 2015-3-24 12:31:42
