使用foreach和

Question

我尝试生成.csv文件，但我将此文件清空。 所以我的代码是：

$fileName = 'Users_' . date('d-m-Y') . '.csv';
$fh = fopen($fileName, "w");
fputcsv($fh, array('EMAIL', 'NAME','SURNAME'), ";");
foreach ($aDataBases as $database) {
    $sSql = sprintf('SELECT email, name, surname FROM users');
    $rResult = Mysqli::query($sSql, $database);
    while ($aRecord = $rResult->fetch_array(MYSQLI_ASSOC)){
       fputcsv($fh, $aRecord['email'], ";");
       fputcsv($fh, $aRecord['name'], ";");
       fputcsv($fh, $aRecord['surname'], ";",'"');
    }
}
fclose($fh);

文件生成但是空了，你能帮帮我吗？我创建了一个print_r（），并在查询执行后有数据。我做错了什么？

Answer 1

您必须将此行更改为

while ($aRecord = $rResult->fetch_array(MYSQLI_ASSOC)){
    fputcsv($fh, $aRecord['email'], ";");
    fputcsv($fh, $aRecord['name'], ";");
    fputcsv($fh, $aRecord['surname'], ";",'"');
}

到

while ($aRecord = $rResult->fetch_array(MYSQLI_ASSOC)){
    fputcsv($fh, [$aRecord['email'], $aRecord['name'], $aRecord['surname']]);
}

点击此处http://php.net/manual/en/function.fputcsv.php#refsect1-function.fputcsv-parameters second parameter should be an array 您缺少的

Answer 2

fputcsv的第二个参数应为array，但在您的代码示例中，它是string。

Answer 3

fputcsv的第二个参数是一个数组。

你可以这样做：

$fields = [];

while ($aRecord = $rResult->fetch_array(MYSQLI_ASSOC)){
    $fields[] = $aRecord['email'];
    $fields[] = $aRecord['name'];
    $fields[] = $aRecord['surname'];

    fputcsv($fh, $fields);
}