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Laravelframework~20 mins

S3 cloud storage integration in Laravel - Practice Problems & Coding Challenges

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Challenge - 5 Problems
🎖️
S3 Storage Mastery
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❓ component_behavior
intermediate
2:00remaining
What is the output of this Laravel code snippet using S3 storage?
Consider this Laravel controller method that uploads a file to S3 and returns the file URL.

What will be the output when this method is called successfully?
Laravel
<?php
use Illuminate\Support\Facades\Storage;

public function uploadFile(Request $request) {
    $path = Storage::disk('s3')->put('uploads', $request->file('photo'));
    return Storage::disk('s3')->url($path);
}
AThe local file path on the server where the file was saved
BAn array containing file metadata like size and mime type
CA full URL string to the uploaded file on the S3 bucket
DA boolean true indicating the upload succeeded
Attempts:
2 left
💡 Hint
Think about what Storage::disk('s3')->url() returns.
📝 Syntax
intermediate
2:00remaining
Which option correctly configures the S3 disk in Laravel's filesystems.php?
You want to add an S3 disk configuration in config/filesystems.php. Which option is syntactically correct?
A
's3' =&gt; [
    'driver' =&gt; 's3',
    'key' =&gt; env('AWS_ACCESS_KEY_ID'),
    'secret' =&gt; env('AWS_SECRET_ACCESS_KEY'),
    'region' =&gt; env('AWS_DEFAULT_REGION'),
    'bucket' =&gt; env('AWS_BUCKET'),
],
B
's3' =&gt; [
    'driver' =&gt; 's3',
    'key' =&gt; 'AWS_ACCESS_KEY_ID',
    'secret' =&gt; 'AWS_SECRET_ACCESS_KEY',
    'region' =&gt; 'AWS_DEFAULT_REGION',
    'bucket' =&gt; 'AWS_BUCKET',
],
C
's3' =&gt; [
    'driver' =&gt; 's3',
    'key' =&gt; env('AWS_ACCESS_KEY'),
    'secret' =&gt; env('AWS_SECRET'),
    'region' =&gt; env('AWS_REGION'),
    'bucket' =&gt; env('AWS_BUCKET_NAME'),
],
D
's3' =&gt; [
    'driver' =&gt; 's3',
    'access_key' =&gt; env('AWS_ACCESS_KEY_ID'),
    'secret_key' =&gt; env('AWS_SECRET_ACCESS_KEY'),
    'region' =&gt; env('AWS_DEFAULT_REGION'),
    'bucket' =&gt; env('AWS_BUCKET'),
],
Attempts:
2 left
💡 Hint
Check the exact keys Laravel expects for S3 config.
🔧 Debug
advanced
2:00remaining
Why does this Laravel S3 upload code throw an error?
This code snippet throws an error when uploading a file to S3. What is the cause?
Laravel
<?php
use Illuminate\Support\Facades\Storage;

public function upload(Request $request) {
    $file = $request->file('image');
    $path = Storage::disk('s3')->putFile('images', $file);
    return $path;
}

// Error: Argument 1 passed to putFile() must be a string, null given
AputFile() requires a full file path string, not a file object
BThe AWS credentials are missing in the .env file
CThe 's3' disk is not configured in filesystems.php
DThe request does not contain a file named 'image', so $file is null
Attempts:
2 left
💡 Hint
Check what $request->file('image') returns if no file is uploaded.
❓ state_output
advanced
2:00remaining
What is the value of $exists after this Laravel S3 code runs?
Given this code snippet, what will be the value of $exists?
Laravel
<?php
use Illuminate\Support\Facades\Storage;

$filename = 'documents/report.pdf';
$exists = Storage::disk('s3')->exists($filename);
AAlways true because the file path is a string
Btrue if 'documents/report.pdf' exists in the S3 bucket, false otherwise
CThrows an exception if the file does not exist
Dnull because exists() does not return a value
Attempts:
2 left
💡 Hint
What does Storage::disk('s3')->exists() check?
🧠 Conceptual
expert
3:00remaining
Which option best explains why Laravel uses Flysystem for S3 integration?
Laravel uses the Flysystem PHP package to integrate with S3. Why is this approach beneficial?
AFlysystem provides a consistent API for multiple storage systems, making it easy to switch between local and cloud storage
BFlysystem automatically encrypts all files uploaded to S3 without extra configuration
CFlysystem is required by AWS SDK to connect to S3 buckets
DFlysystem caches all S3 files locally to improve performance
Attempts:
2 left
💡 Hint
Think about abstraction and flexibility in storage APIs.