php导出csv

1.导出有很多种，他有自带包的导出，但是如果你要导出7，8千的数据的话就有点困难，我最近发现一个导出可以到出1万的数据，好像只能导出csv格式的。

public function down_load($lists){

    set_time_limit(0);    ini_set(‘memory_limit‘,‘1024M‘);    $arr = array(‘a‘,‘b‘,‘c‘,‘d‘,‘e‘,‘f‘,‘g‘,‘h‘,‘i‘,‘j‘,‘k‘,‘l‘,‘m‘,‘n‘);    $data=‘序列号‘;    foreach($arr as $_arr){        $data .= ‘,‘.$_arr;    }    $data .= "\n";    $i=0;    foreach($lists as $key => $_list){        $i++;        $data .=$i.‘,‘.$_list[‘account‘][0][‘business_department‘]            .‘,‘.$_list[‘account‘][0][‘capital_platform‘].‘,‘.$_list[‘account‘][0][‘account‘].‘,‘.$_list[‘currency_type‘].‘,‘.$_list[‘begin_y‘].‘,‘            .$_list[‘begin_b‘].‘,‘.$_list[‘debit_y‘].‘,‘.$_list[‘debit_b‘].‘,‘.$_list[‘credit_y‘].‘,‘            .$_list[‘credit_b‘].‘,‘.$_list[‘end_y‘].‘,‘.$_list[‘end_b‘].‘,‘.$_list[‘year‘].‘,‘.$_list[‘month‘].","."".","."\n";    }    ob_end_flush();    header("Content-type:text/csv");    header("Content-Disposition:attachment;filename=订单明细报表.csv"); //“生成文件名称”=自定义    header(‘Cache-Control:must-revalidate,post-check=0,pre-check=0‘);    header(‘Expires:0‘);    header(‘Pragma:public‘);    echo $data;    exit;}