php导出csv并保存在服务器，返回csv的文件路径

<?php

namespace app\common\controller;

use think\Controller;
use think\Db;

class Csv extends Controller
{
    public static function putCsv($condition, $action, $file_name)
    {
        set_time_limit(0);
        switch ($action) {
            case "web":
                $field = [
                    'A' => [
                        "tid",
                        "Transaction Number"
                    ],
                    'B' => [
                        "create_date",
                        "Time"
                    ],
                    'C' => [
                        "full_name",
                        "Card Name"
                    ],
                    'D' => [
                        "face_value",
                        "Face Value($)"
                    ],
                    'E' => [
                        "price_sgd",
                        "Cost($)"
                    ],
                    'F' => [
                        "price_rmb",
                        "Cost(￥)"
                    ],
                    'G' => [
                        "mobile",
                        "Top-up Number"
                    ],
                    'H' => [
                        "Status",
                        "Status"
                    ],
                    'I' => [
                        "ip",
                        "IP"
                    ],
                    'J' => [
                        "email",
                        "Email"
                    ]
                ];
                $file_name = "web" . $file_name . "order_list";
                $builder = Db::table("Transactions")
                    ->field("tid,create_date,menu_id as full_name,tag as face_value,price_sgd,price_rmb,mobile,status,user_ip,email")
                    ->where($condition)
                    ->select();
                $list = collection($builder)->each(function ($item) {
　　　　　　　　　　　　//csv导出数字满15位之后自动省略---科学计算法，加上"\t"则可以完整导出
                    $item['create_date'] .= "\t";
                    $item['mobile'] .= "\t";
                    $product_info = getProdInfoByMenuId($item['full_name'], true);
                    $item['full_name'] = $product_info['full_name'];
                    $item['face_value'] = number_format($product_info['card_val'] / 100, 2);
                    if ($item['status'] == '1') $item['status'] = "Success";
                    if ($item['status'] == '0') $item['status'] = "Pending";
                    if ($item['status'] == '102') $item['status'] = "Fail";

                    unset($item['menu_id']);
                    return $item;
                });
                //dump($list);exit;
                break;
            case "wechat":
                $file_name = "wechat" . $file_name . "order_list";
                $field = [
                    'A' => [
                        "tid",
                        "Transaction Number"
                    ],
                    'B' => [
                        "uid",
                        "Wechat uid"
                    ],
                    'C' => [
                        "create_date",
                        "Time"
                    ],
                    'D' => [
                        "mobile",
                        "Top-up Number"
                    ],
                    'E' => [
                        "pid",
                        "Product pid"
                    ],
                    'F' => [
                        "state",
                        "Status"
                    ],
                    'G' => [
                        "upid_lst",
                        "Red Packet"
                    ],
                    'H' => [
                        "admin_note",
                        "Remark"
                    ]
                ];
                $builder = Db::table("WXTrans")
                    ->field("tid,uid,create_date,mobile,pid,state,upid_lst,admin_note")
                    ->where("uid <> 13")
                    ->where("uid <> 15")
                    ->where("total_fee > 1")
                    ->where("mode != 1")
                    ->where($condition)
                    ->select();
                $list = collection($builder)->each(function ($item) {
                    $item['tid'] = "wx_" . $item['tid'];
                    $item['create_date'] .= "\t";
                    $item['mobile'] .= "\t";
                    $item['upid_lst'] = str_replace(",", " ", $item['upid_lst']);
                    if ($item['state'] == 3) $item['state'] = "Success";
                    if ($item['state'] == 2) $item['state'] = "Pending";
                    if ($item['state'] == 102) $item['state'] = "Fail";
                    if ($item['state'] == 200) $item['state'] = "Refund";
                    return $item;
                });
                break;
            case "client":
                $file_name = "API" . $file_name . "order_list";
                $field = [
                    'A' => [
                        "ctime",
                        "Time"
                    ],
                    'B' => [
                        "full_name",
                        "Card Name"
                    ],
                    'C' => [
                        "face_value",
                        " Face Value($)"

                    ],
                    'D' => [
                        "price_sgd",
                        "Cost($)"
                    ],
                    'E' => [
                        "mobile",
                        "Top-up Number"
                    ],
                    'F' => [
                        "err_code",
                        "Status"
                    ],
                    'G' => [
                        "order_id",
                        "Transaction Number"

                    ],
                    'H' => [
                        "client_id",
                        "API Client"

                    ],
                ];
                 if (isset($condition['client_id'])) {
                    $file_name = $condition['client_id'] . $file_name . "order_list";
                } else {
                    $file_name = "API" . $file_name . "order_list";
                }
                $builder = Db::table("ApiTrans")
                    //->fetchSql(true)
                    ->field("ctime,pid as full_name,amount as face_value,price_sgd,mobile,err_code,tid as order_id,client_tag,client_id")
                    ->where("category = 'topup' or category is NULL")
                    ->whereNotLike("client_id", "%_test%")
                    ->where($condition)
                    ->select();
                    //echo $builder;exit;
                $list = collection($builder)->each(function ($item) {
                    $item['order_id'] = "Our Transaction Number:" . $item['order_id'] . "\n" . "API Transaction Number:" . $item['client_tag'];
                    $item['price_sgd'] = number_format($item['price_sgd'] / 100, 2);
                    $item['ctime'] .= "\t";
                    $item['mobile'] .= "\t";
                    if ($item['err_code'] == 0) {
                        $item['err_code'] = "Success";
                    } elseif ($item['err_code'] == 311) {
                        $item['err_code'] = "Pending";
                    } else {
                        $item['err_code'] = "Fail";
                    }
                    $product_info = getProdInfo($item['full_name'], true);
                    $item['full_name'] = $product_info['full_name'];
                    $item['face_value'] = number_format($product_info['card_val'] / 100, 2);
                    unset($item['client_tag']);
                    //dump($item);exit;
                    return $item;
                });
                break;
            case "alipay":
                $file_name = "alipay" . $file_name . "order_list";
                $field = [
                    'A' => [
                        "uid",
                        "Wechat uid"
                    ],
                    'B' => [
                        "tid",
                        "Transaction Number"
                    ],
                    'C' => [
                        "ctime",
                        "Time"
                    ],
                    'D' => [
                        "mobile",
                        "Top-up Number"
                    ],
                    'E' => [
                        "pid",
                        "Product pid"
                    ],
                    'F' => [
                        "state",
                        "Status"
                    ],
                    'G' => [
                        "upid_lst",
                        "Red Packet"
                    ],
                    'H' => [
                        "admin_note",
                        "Remark"
                    ]
                ];
                $builder = Db::table("cz_alipay_trans")
                    ->field("tid,source_uid as uid,ctime,mobile,pid,state,upid_lst,admin_note")
                    ->where($condition)
                    ->select();
                $list = collection($builder)->each(function ($item) {
                    $item['tid'] = "ap_" . $item['tid'];
                    $item['ctime'] .= "\t";
                    $item['mobile'] .= "\t";
                    $item['upid_lst'] = str_replace(",", " ", $item['upid_lst']);
                    $item['uid'] = getUidByOpenid($item['uid'])['uid'];
                    if ($item['state'] == 3) $item['state'] = "Success";
                    if ($item['state'] == 2) $item['state'] = "Pending";
                    if ($item['state'] == 102) $item['state'] = "Fail";
                    if ($item['state'] == 200) $item['state'] = "Refund";
                    return $item;
                });
                break;
            default:
                break;
        }
        $file_name = $file_name . ".csv";
        //$file_name = time() . ".csv";

        $file_path= $_SERVER['DOCUMENT_ROOT'] . "/uploads/csv/"  . $file_name;
        if (file_exists($file_path)) {
            unlink($file_path);
        }
        $file_path="/uploads/csv/" . $file_name;
        $fp = fopen("." . $file_path, "a");
           $limit = 10000;

        $calc = 0;
        foreach ($field as $k => $v) {
            //$tit[] = iconv("UTF-8", "GB2312//IGNORE", $v[1]);
            //外国不支持UTF-8，需要转换成utf-8 with bom
            $tit[] = "\xEF\xBB\xBF".$v[1];
        }

        fputcsv($fp, $tit);
        foreach ($list as $v) {
            $calc ++;
               if ($limit == $calc) {
                   ob_flush();
                   flush();
                   $calc = 0;
               }
            foreach ($v as $_v) {
                //$tarr[] = iconv("UTF-8", "GB2312//IGNORE", $_v);
                $tarr[] = $_v;
            }
            fputcsv($fp, $tarr);
            unset($tarr);
        }
        unset($list);
        fclose($fp);

        return ["code" => 1, "msg" => "获取成功", "url" => $_SERVER['HTTP_HOST'] . $file_path];
    }
}

新建一个类如上，然后在需要用到的地方调用这个类里面的方法即可。