php - 如何使用 php/mysql 强制将整数到字符串导出到 Excel？

Question

我需要将 MySql 表中的所有数据导出到 Excel。我正在使用下面的代码，运行良好。

问题是:有 2 个字段是超过 30 位的整数。因此，当我将其导出到 .csv 文件时，Excel 会将它们转换为科学计数法。

示例:字段“95145612345641859415634194164163”转换为“9.51456E+31”

如何强制它以字符串形式读取？

<?php


exportMysqlToCsv('export_csv.csv');



function exportMysqlToCsv($filename = 'export_csv.csv')
{

   $conn = dbConnection();

    if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
    }
    $sql_query = "SELECT * FROM cadastros";


    $result = $conn->query($sql_query);

    $f = fopen('php://temp', 'wt');
    $first = true;
    while ($row = $result->fetch_assoc()) {
        if ($first) {
            fputcsv($f, array_keys($row));
            $first = false;
        }
        fputcsv($f, $row);
    } // end while

    $conn->close();

    $size = ftell($f);
    rewind($f);

    header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
    header("Content-Length: $size");
    header("Content-type: text/x-csv");
    header("Content-type: text/csv");
    header("Content-type: application/csv");
    header("Content-Disposition: attachment; filename=$filename");
    fpassthru($f);
    exit;

}

// db connection function
function dbConnection(){
    $servername = "localhost";
    $username = "root";
    $password = "";
    $dbname = "creche_escolas";
    // Create connection
    $conn = new mysqli($servername, $username, $password, $dbname);
    return $conn;
}

Answer 1

插入值时应确保您的号码是字符串，请尝试:

fputcsv($f, ['12343231743986248756324354595', '123456', 12123437829564329758623456789]);

第一个值将保持不变，而最后一个值将转换为 1.21234378296E+28

因此，您需要将 fputcsv($f, $row); 行替换为转换为字符串(例如 number_format )的函数:

fputcsv($f, array_map(function($v){return number_format($v, 0, '', '');}, $row));