Create new file .txt or .json on Amazon s3 using aws sdk php

In this tutorial, we will see ‘how to create file on Amazon s3 using php’.
Before using the following script, you must installed aws sdk php.

$s3 = \Aws\S3\S3Client::factory(array(
'key' => 'YOUR_ACCESS_KEY',
'secret' => 'YOUR_KEY_SECRET',
));
$s3->registerStreamWrapper();
$stream = fopen("s3://YOUR_BUKCET/index.json", 'w', false, stream_context_create(array(
's3' => array(
'CacheControl' => 'no-cache',
'ACL' => 'public-read',
)
)));
fwrite($stream, "content of index.json");
fclose($stream);