AWS S3 File upload using php sdk

Working example Example :


<?php

set_include_path(".:/home/whyceffy/public_html/fam/lib");
require 'aws/autoloader.php';

use Aws\S3\S3Client; 
use Aws\Exception\AwsException;

echo '<form action="https://whyceeyes.com/fam/test.php" method="post" enctype="multipart/form-data"> <input type="FILE" name="filetoupload"><input type="submit" name="submit" value="Upload Now"></form>';


    function handle_file_upload($params, $userID = NULL) {
        try{       
            //Create a S3Client
            $s3 =  new S3Client(array(
                //'profile' => 'default',  donot use this if credential user here below
                'region' => 'ap-southeast-1',
                'version' => '2006-03-01',
                 'credentials' => array(
                'key' => 'Access key ID  of IAM',
                'secret' => 'this password from Identity and Access Management (IAM) users secret'
                )
            ));
           

            if (empty($_FILES)) {
                return false;
            }
           
            if (!is_uploaded_file($_FILES[$params]['tmp_name'])) {
                return false;
            }
           

       
            $sourcePath = $_FILES[$params]['tmp_name'];
            $bucket = 'mefm';
            $keyname = 'resource/' .  $userID . '-' . date('y-m-d-H-i-s') . '-' . $_FILES[$params]['name'];

            $result = $s3->putObject([
                'Bucket' => $bucket,
                'Key'    => $keyname,
                'ACL'    => 'public-read',
                '//Body'   => 'Hello, world!',
                'SourceFile' =>$sourcePath,
            ]);

       
            if($result["@metadata"]["statusCode"] === 200){
                return $result['ObjectURL'];
            }else{
                return false;
            }
        } catch (S3Exception $e) {
            return false;
        }
    }
   
   
   
   
   
$s3url = handle_file_upload("filetoupload",'me');

if($s3url){
    echo $s3url;
}



===============================

if key is not properly defined
in

            $result = $s3->putObject([
                'Bucket' => $bucket,
                'Key'    => $keyname,
                'ACL'    => 'public-read',
                '//Body'   => 'Hello, world!',
                'SourceFile' =>$sourcePath,
            ]);
then


 PHP Fatal error:  Uncaught exception 'InvalidArgumentException' with message 'Found 1 error while validating the input provided for the PutObject operation:
[Key] is missing and is a required parameter' in /home/public_html/fam/lib/aws/Aws/Api/Validator.php:65
Stack trace:
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