将数组导出到csv failure：给定字符串

问题描述

当我尝试将数组导出到csv文件时，我无法解决问题。我已经多次使用此函数，但在这里我看不到我的错误在哪里。

I can't solve a problem occuring when I try to export an array to a csv file. I have used this function several tumes without problem but here I do not see where my mistake is.

我设置了一个数组：

$mytags= array();

我通过循环填充它。当我通过 print_r（$ mytags）;
打印内容时，这似乎还可以，下面是我的输出示例：

I populate it by a loop. When I print the content through print_r($mytags);it seems to be ok, here some examples of my output:

Array ( [0] => [1] => air-travel [2] => airports [3] => security-airport [4] => city-airport  ... )

之后，我尝试将结果导出到csv by fputcsv：

After that I try to export the result to csv by fputcsv:

$fp = fopen('file.csv', 'w');
foreach ($mytags as $fields) {
    fputcsv($fp, $fields);
}

但我收到此错误：

问题可能是只有一个字段吗？
另外，我尝试用 $ mytags 替换 $ fields 来编写csv，在这种情况下我有4GB的文件，所以不是
有人看到了如何在csv文件中记录其唯一字段吗？

Could the problem be that there is only one field ?Alternatively, I tried to replace $fields by $mytags to write the csv, and in this case I get a 4GB files, so it's not theDoes someone see how to record thhis unique field in a csv file ?

推荐答案

错误非常清楚， $ fields 不是数组，而是字符串。您需要一个数组。

The error is very clear, $fields is not an array, it is a string. You need an array.

fputcsv($fp, $mytags);

没有foreach循环就可以完成这项工作。

Without a foreach loop will do the job.

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