Merge arrays created using Google Drive NextPageToken into one array

Question

I have the following code for downloading files from Google Drive, the number of files is determined by nextPageToken as shown below.

The code will continue adding arrays to the $files array until nextPageToken is null. At this point, I have an unknown number of sub-arrays and I wish to merge them into a single array without looping through all returned arrays - is there an easy way to achieve this using PHP?

So, in the code below, I want $files[] to be a single array. For example:

$result = array_merge($files); will only produce the same result

```
  $nextPageToken = "empty" ;
  while ( $nextPageToken != null) {
    $responseFiles = $drive->ListFiles( $optParams);
    $nextPageToken = $responseFiles->getNextPageToken();
    $files[] = $responseFiles->getFiles();
    $optParams = array(
        'fields' => "nextPageToken, files(contentHints/thumbnail,fileExtension,iconLink,id,name,size,thumbnailLink,webContentLink,webView Link,mimeType,parents)",
        'q' => "'".$match[0]."' in parents",
        'pageToken' => $nextPageToken,
        'orderBy' => 'modifiedTime desc, name'
        );

   
  }
```

Answer 1

Create an empty $files array before the loop, then merge and return in each loop like below.

$files = [];
$nextPageToken = "empty";

$optParams = array(
    'fields' => "nextPageToken, files(contentHints/thumbnail,fileExtension,iconLink,id,name,size,thumbnailLink,webContentLink,webView Link,mimeType,parents)",
    'pageToken' => $nextPageToken,
    'orderBy' => 'modifiedTime desc, name'
);

while ( $nextPageToken != null) {
  $responseFiles = $drive->ListFiles($optParams);
  $nextPageToken = $responseFiles->getNextPageToken();
  $files = array_merge($files, $responseFiles->getFiles());
  $optParams['q'] => "'".$match[0]."' in parents";
}

See array_merge’s API documentation for more information.