Download files from firebase Storage with php - php

Question

i am new in firebase web if it possible to upload, download, and delete file using php. i have upload file using JS but i want to download using PHP.
Here is script of download file using JS but i want in PHP.
Thanks in advance...
My Code
[START storage_quickstart]
# Includes the autoloader for libraries installed with composer
require __DIR__ . '/vendor/autoload.php';
# Imports the Google Cloud client library
use Google\Cloud\Storage\StorageClient;
# Your Google Cloud Platform project ID
$projectId = 'My project ID';
# Instantiates a client
$storage = new StorageClient([
'projectId' => $projectId
]);
# The name for the new bucket
$bucketName = 'my bucket';
# Creates the new bucket
$bucket = $storage->createBucket($bucketName);
echo 'Bucket ' . $bucket->name() . ' created.';
# [END storage_quickstart]
return $bucket;

Answer 1

The short answer is that you should use gcloud-php. This requires that you set up a service account (or use Google Compute Engine/Container Engine/App Engine which provide default credentials).
It's likely that you'll create a service account, download a keyfile.json, and provide it as an argument to the StorageClient, like so:
# Instantiates a client
$storage = new StorageClient([
'keyFilePath' => '/path/to/key/file.json',
'projectId' => $projectId
]);
Alternatively, it looks like they've built another layer of abstraction, which takes the same arguments but allows you to use lots of other services:
use Google\Cloud\ServiceBuilder;
$gcloud = new ServiceBuilder([
'keyFilePath' => '/path/to/key/file.json',
'projectId' => 'myProject'
]);
$storage = $gcloud->storage();
$bucket = $storage->bucket('myBucket');

Answer 2

That's an old question, but I was struggling with same problem... hope my solution help someone.
In fact, I really don't know if there is an official way to do that, but I created the method below and it worked for me.
function storageFileUrl($name, $path = []) {
$base = 'https://firebasestorage.googleapis.com/v0/b/';
$projectId = 'your-project-id';
$url = $base.$projectId.'/o/';
if(sizeof($path) > 0) {
$url .= implode('%2F', $path).'%2F';
}
return $url.$name.'?alt=media';
}
To access files in the root of bucket:
$address = storageFileUrl('myFile');
Result: https://firebasestorage.googleapis.com/v0/b/your-project-id.appspot.com/o/myFile?alt=media
To access files inside some folder, do:
$address = storageFileUrl('myFile', ['folder', 'subfolder']);
Result: https://firebasestorage.googleapis.com/v0/b/your-project-id.appspot.com/o/folder%2Fsubfolder%2FmyFile?alt=media
Enjoy.