unable to upload file to sub-folder of main bucket - php

Question

I am trying to upload error file in AWSS3 but it shows error like "The bucket you are attempting to access must be addressed using the specified endpoint. Please send all future requests to this endpoint: "test9011960909.s3.amazonaws.com"."
i also specified 'region' => 'us-east-1' but still same error occurs.
it is working when i specify
'Bucket' => $this->bucket,
but i wanted to upload file in sub-folder of main bucket
'Bucket' => $this->bucket . "/" . $PrefixFolderPath,
i already applied approved answer from AWS S3: The bucket you are attempting to access must be addressed using the specified endpoint
but still getting same error, i am using php
Code :
use Aws\S3\S3Client;
use Aws\S3\Exception\S3Exception;
class AWSS3Factory {
private $bucket;
private $keyname;
public function __construct() {
$this->bucket = AWSS3_BucketName;
$this->keyname = AWSS3_AccessKey;
// Instantiate the client.
}
public function UploadFile($FullFilePath,$PrefixFolderPath="") {
try {
$s3 = S3Client::factory(array(
'credentials' => array(
'key' => MYKEY,
'secret' => MYSECKEY,
'region' => 'eu-west-1',
)
));
// Upload data.
$result = $s3->putObject(array(
'Bucket' => $this->bucket . "/" . $PrefixFolderPath,
'Key' => $this->keyname,
'SourceFile' => $FullFilePath,
'StorageClass' => 'REDUCED_REDUNDANCY'
));
return true;
// Print the URL to the object.
//echo $result['ObjectURL'] . "\n";
} catch (S3Exception $e) {
echo $e->getMessage() . "\n";
}
}
}

Answer 1

You must create s3 instance in another way, like this:
$s3 = S3Client::factory([
'region' => '',
'credentials' => ['key' => '***', 'secret' => '***'],
'version' => 'latest',
]);

Answer 2

You must add $PrefixFolderPath not to 'Bucket' but to 'Key':
$result = $s3->putObject(array(
'Bucket' => $this->bucket,
'Key' => $PrefixFolderPath . "/" . $this->keyname,
'SourceFile' => $FullFilePath,
'StorageClass' => 'REDUCED_REDUNDANCY'
));