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用php导入10W条+ 级别的csv大文件数据到mysql。导出10W+级别数据到csv文件

时间：2021-07-01 10:21:17 帮助过：23人阅读

$handle=fopen("1.csv","r");
while(!feof($handle)){
$buffer=fgetss($handle,2048);
$row = mb_convert_encoding(trim($buffer), ‘utf-8‘, ‘gbk‘); //很重要。转换成UTF8格式，不然容易产生乱码
$data=explode(",",$row); //转换成数组
$insertRows[] = $data;
} //这样所有的csv文件就生成一个二维数组$insertRows;

2. 函数 fgetcsv($handel,2048,‘,‘),返回数组，它就是explode(",",fget($handel))的组合。这种方法使用于小的csv 文件。而且不适合有汉字的csv 文件。 [php] view plain copy

$handle=fopen("1.csv","r");
while($data=fgetcsv($handle,1000,",")){
$insertRows[] = $data;
} //这样所有的csv文件就生成一个二维数组$insertRows;

3. 说到正题了。上面2种方法适合少量的csv 文件。如果一个文件有10W+ 以上的行数，恐怕就很悲剧了。 [php] view plain copy

$handle=fopen("1.csv","r");
//将文件一次性全部读出来
$excelData = array();
$content = trim(file_get_contents($fileName));
$excelData = explode("\n",$content);

或者直接用$excelData = file($file); file(）函数直接将数据读出并放入数组当中。
我们先将所有的文件一次性读出来。放到一个数组$excelData 中。这个时候，我们就可以不用管这个csv 文件了，纯粹了php 操作数组了。所以。不会崩溃异常： [php] view plain copy

$chunkData = array_chunk($excelData , 5000); // 将这个10W+ 的数组分割成5000一个的小数组。这样就一次批量插入5000条数据。mysql 是支持的。
$count = count($chunkData);
for ($i = 0; $i < $count; $i++) {
$insertRows = array();
foreach($chunkData[$i] as $value){
$string = mb_convert_encoding(trim(strip_tags($value)), ‘utf-8‘, ‘gbk‘);//转码
$v = explode(‘,‘, trim($string));
$row = array();
$row[‘cdate‘] = empty($v[0]) ? date(‘Y-m-d‘) : date(‘Y-m-d‘,strtotime($v[0]));
$row[‘business‘] = $v[1];
$row[‘project‘] = $v[2];
$row[‘shopname‘] = $v[3];
$row[‘shopid‘] = $v[4];
$row[‘fanli‘] = formatNumber($v[5]);
$row[‘fb‘] = $v[6] * 100;
$row[‘jifen‘] = $v[7];
$sqlString = ‘(‘."‘".implode( "‘,‘", $row ) . "‘".‘)‘; //批量
$insertRows[] = $sqlString;
}
$result = $model->addDetail($insertRows); //批量将sql插入数据库。
}

插入数据库当然是批量插入了： [php] view plain copy

public function addDetail($rows){
if(empty($rows)){
return false;
}
//数据量较大,采取批量插入
$data = implode(‘,‘, $rows);
$sql = "INSERT IGNORE INTO tb_account_detail(cdate,business,project,shopname,shopid,fanli,fb,jifen)
VALUES {$data}";
$result = $this->query($sql);
return true;
}

ok ! 亲测试。10W 数据。6个字段。插入需要10秒。 -----------------2013-12-18 日更新---------------------

3. 导出10W+的数据到csv

放弃之前写的一篇博客中用到的方法：http://blog.csdn.net/think2me/article/details/8596833 。原因是：当超过50W+ 以上的数据时，有可能浏览器崩溃，内存超。这个方法是写文件的方式。然后再把文件弹出下载。 [php] view plain copy

public function dump2Excel() {
set_time_limit(0);
ini_set(‘memory_limit‘, ‘640M‘);
//获取列表
$name = $this->getActionName();
$model = D(GROUP_NAME . ‘.‘ . $name);
$map = $this->_search();
//文件名
if (isset($_GET[‘error‘]) && $_GET[‘error‘] > 0) {
$filename = C(‘IMG_PATH‘).‘account_data_error_‘ . $map[‘action_id‘] . ‘_‘ . date(‘Y-m-d‘, mktime()) . ‘.csv‘;
}else{
$filename = C(‘IMG_PATH‘).‘account_data_all_‘ . $map[‘action_id‘] . ‘_‘ . date(‘Y-m-d‘, mktime()) . ‘.csv‘;
}
//用户信息,商家ID,联盟,商家订单号,商品分类,确认类别,下单时间,完成时间,
//实际支付金额,佣金,佣金补贴,返利,F币,论坛积分,备注,强制入库
// ‘user_info‘, ‘shopid‘, ‘league‘, ‘order_id‘, ‘classify‘, ‘confirm_type‘,
//‘buydate‘, ‘paydate‘, ‘real_pay‘, ‘commission‘, ‘commission_plus‘,
// ‘fanli‘, ‘jifen‘, ‘bbs‘, ‘remarks‘, ‘persist_execute‘, ‘unique_sign‘,‘error_code‘
$header[] = iconv("utf-8", "gb2312", "用户信息");
$header[] = iconv("utf-8", "gb2312", "商家ID");
$header[] = iconv("utf-8", "gb2312", "联盟");
$header[] = iconv("utf-8", "gb2312", "商家订单号");
$header[] = iconv("utf-8", "gb2312", "商品分类");
$header[] = iconv("utf-8", "gb2312", "确认类别");
$header[] = iconv("utf-8", "gb2312", "下单时间");
$header[] = iconv("utf-8", "gb2312", "完成时间");
$header[] = iconv("utf-8", "gb2312", "实际支付金额");
$header[] = iconv("utf-8", "gb2312", "佣金");
$header[] = iconv("utf-8", "gb2312", "佣金补贴");
$header[] = iconv("utf-8", "gb2312", "返利");
$header[] = iconv("utf-8", "gb2312", "F币");
$header[] = iconv("utf-8", "gb2312", "论坛积分");
$header[] = iconv("utf-8", "gb2312", "备注");
$header[] = iconv("utf-8", "gb2312", "强制入库");
$header[] = iconv("utf-8", "gb2312", "唯一标识");
$header[] = iconv("utf-8", "gb2312", "错误信息");
$headerFile = implode(‘,‘, $header);
//写入标题
@unlink($filename);
file_put_contents($filename, $headerFile."\n");
//获取所有error_code
$list = D(‘Fanli‘)->table(‘tb_account_action_data_error_code‘)->field(‘id,err_msg‘)->findAll();
$error_msg = array();
foreach ($list as $value) {
$error_msg[$value[‘id‘]] = $value[‘err_msg‘];
}
//导入错误的数据
if (isset($_GET[‘error‘]) && $_GET[‘error‘] > 0) {
$map[‘error_code‘] = array(‘gt‘, 0);
}
if (!empty($map[‘action_id‘])) {
$allCount = $model->where($map)->field(‘count(1) as count‘)->select();
$pageLimit = ceil($allCount[0][‘count‘]/self::PAGE_COUNT);
$voList = array();
//打开文件
if (!$handle = fopen($filename, ‘a‘)) {
echo "不能打开文件 $filename";
exit;
}
//分页获取
for($i=0;$i<$pageLimit;$i++){
$count = self::PAGE_COUNT;
$start = $count * $i;
$limit = "$start,$count";
$voList = $model->where($map)->limit($limit)->order(‘id desc‘)->findAll();
//写入文件
$excelString = array();
foreach ($voList as $v) {
$dumpExcel = array();
$dumpExcel[] = mb_convert_encoding($v[‘user_info‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘shopid‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘league‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘order_id‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘classify‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘confirm_type‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = "‘".mb_convert_encoding($v[‘buydate‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = "‘".mb_convert_encoding($v[‘paydate‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘real_pay‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘commission‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘commission_plus‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘fanli‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘jifen‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘bbs‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($v[‘remarks‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = intval($v[‘persist_execute‘]);
$dumpExcel[] = mb_convert_encoding($v[‘unique_sign‘], ‘GBK‘, ‘UTF-8‘);
$dumpExcel[] = mb_convert_encoding($error_msg[$v[‘error_code‘]], ‘GBK‘, ‘UTF-8‘);
$excelString[] = implode(‘,‘,$dumpExcel);
}
//只能一行行些。不然容易漏
foreach($excelString as $content){
fwrite($handle, $content . "\n");
}
unset($excelString);
}
fclose($handle);
}
//导出下载
header("Content-type: application/octet-stream");
header(‘Content-Disposition: attachment; filename="‘ . basename($filename) . ‘"‘);
header("Content-Length: ". filesize($filename));
readfile($filename);
}

用php导入10W条+ 级别的csv大文件数据到mysql。导出10W+级别数据到csv文件

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用php导入10W条+ 级别的csv大文件数据到mysql。导出10W+级别数据到csv文件

3. 导出10W+的数据到csv

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