Upload an image/object to an AWS S3 Bucket using PHP

put-object-on-aws-s3.php

<?php
	// Installed the need packages with Composer by running:
	// $ composer require aws/aws-sdk-php
	
	$filePath = "https://example.com/test.png";

	require 'vendor/autoload.php';

	$bucketName = 'YOUR_BUCKET_NAME';
	$filePath = './YOUR_FILE_NAME.png';
	$keyName = basename($filePath);

	$IAM_KEY = 'YOUR_SECRET_ACCESS_KEY';
	$IAM_SECRET = 'YOUR_SECRET_ACCESS_CODE';


	use Aws\S3\S3Client;
	use Aws\S3\Exception\S3Exception;

	// Set Amazon S3 Credentials
	$s3 = S3Client::factory(
		array(
			'credentials' => array(
				'key' => $IAM_KEY,
				'secret' => $IAM_SECRET
			),
			'version' => 'latest',
			'region'  => 'us-east-2'
		)
	);
  
  // The region matters. I'm using "US Ohio" so "us-east-2" is the corresponding
  // region code. You can google it or upload a file to the S3 bucket and look at
  // the public url. It will look like:
  // https://s3.us-east-2.amazonaws.com/YOUR_BUCKET_NAME/image.png
  // 
  // As you can see the us-east-2 in the url.

	try {
		// So you need to move the file on $filePath to a temporary place.
		// The solution being used: http://stackoverflow.com/questions/21004691/downloading-a-file-and-saving-it-locally-with-php
		if (!file_exists('/tmp/tmpfile')) {
			mkdir('/tmp/tmpfile');
		}
		
		// Create temp file
		$tempFilePath = '/tmp/tmpfile/' . basename($filePath);
		$tempFile = fopen($tempFilePath, "w") or die("Error: Unable to open file.");
		$fileContents = file_get_contents($filePath);
		$tempFile = file_put_contents($tempFilePath, $fileContents);
		
		
		// Put on S3
		$s3->putObject(
			array(
				'Bucket'=>$bucketName,
				'Key' =>  $keyName,
				'SourceFile' => $tempFilePath,
				'StorageClass' => 'REDUCED_REDUNDANCY'
			)
		);
	} catch (S3Exception $e) {
		echo $e->getMessage();
	} catch (Exception $e) {
		echo $e->getMessage();
	}
?>

Line 10 overwrites line 5. Both assign to $filePath. One is a URL and the other is the actual file. Please correct this.

This is great, had trouble all day getting the credentials to work out, but this is the first example I found that had a nested array, and it worked!

Why i am getting this error "S3 Error upload section:The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256."

@airqb check this out

$s3 = S3Client::factory(
    array(
        'credentials' => array(
            'key' => $IAM_KEY,
            'secret' => $IAM_SECRET
        ),
        'version' => 'latest',
        'region'  => 'eu-west-1',
        "signature"=> 'v4',
    )
);

add "signature"=> 'v4' it will solve the problem.

I used this code. But one issue is occur. Image successfully uploaded in my Amazon S3 bucket, but that image size 0 kB. That's why when I open this image that image successfully open but nothing to see this image. Please help me to solve this problem.

is there any other way to do the same thing without credentials?

I think you can do it without credentials only if you're accessing a bucket with public access read/write. Credentials are needed when you're working with a blocked-to-public-access bucket or location in bucket and anyway when you use authentication.