image upload s3 via PHP CURL



$aws_access_key_id = 'ZZIAXB6XXPMGHXM3AJBXX';
				$aws_secret_access_key = 'X/4BDguGDzRSvuxl5tHq3ZA9NvbQvURXs2vtiDDD';

// Bucket
				$bucket_name = 'bucketname';

// AWS region and Host Name (Host names are different for each AWS region)
				// As an example these are set to us-east-1 (US Standard)
				$aws_region = 'us-east-2';
				$host_name = $bucket_name . '.s3.amazonaws.com';

// Server path where content is present. This is just an example
				$content_path = 'sourcepath.png';
				$content = file_get_contents($content_path);

// AWS file permissions
				$content_acl = 'public-read';

// MIME type of file. Very important to set if you later plan to load the file from a S3 url in the browser (images, for example)
				$content_type = 'image/png';
// Name of content on S3
				$content_title = 's3folder/s3image.png'

// Service name for S3
				$aws_service_name = 's3';

// UTC timestamp and date
				$timestamp = gmdate('Ymd\THis\Z');
				$date = gmdate('Ymd');

// HTTP request headers as key & value
				$request_headers = array();
				$request_headers['Content-Type'] = $content_type;
				$request_headers['Date'] = $timestamp;
				$request_headers['Host'] = $host_name;
				$request_headers['x-amz-acl'] = $content_acl;
				$request_headers['x-amz-content-sha256'] = hash('sha256', $content);
// Sort it in ascending order
				ksort($request_headers);

// Canonical headers
				$canonical_headers = [];
				foreach ($request_headers as $key => $value) {
					$canonical_headers[] = strtolower($key) . ":" . $value;
				}
				$canonical_headers = implode("\n", $canonical_headers);

// Signed headers
				$signed_headers = [];
				foreach ($request_headers as $key => $value) {
					$signed_headers[] = strtolower($key);
				}
				$signed_headers = implode(";", $signed_headers);

// Cannonical request
				$canonical_request = [];
				$canonical_request[] = "PUT";
				$canonical_request[] = "/" . $content_title;
				$canonical_request[] = "";
				$canonical_request[] = $canonical_headers;
				$canonical_request[] = "";
				$canonical_request[] = $signed_headers;
				$canonical_request[] = hash('sha256', $content);
				$canonical_request = implode("\n", $canonical_request);
				$hashed_canonical_request = hash('sha256', $canonical_request);

// AWS Scope
				$scope = [];
				$scope[] = $date;
				$scope[] = $aws_region;
				$scope[] = $aws_service_name;
				$scope[] = "aws4_request";

// String to sign
				$string_to_sign = [];
				$string_to_sign[] = "AWS4-HMAC-SHA256";
				$string_to_sign[] = $timestamp;
				$string_to_sign[] = implode('/', $scope);
				$string_to_sign[] = $hashed_canonical_request;
				$string_to_sign = implode("\n", $string_to_sign);

// Signing key
				$kSecret = 'AWS4' . $aws_secret_access_key;
				$kDate = hash_hmac('sha256', $date, $kSecret, true);
				$kRegion = hash_hmac('sha256', $aws_region, $kDate, true);
				$kService = hash_hmac('sha256', $aws_service_name, $kRegion, true);
				$kSigning = hash_hmac('sha256', 'aws4_request', $kService, true);

// Signature
				$signature = hash_hmac('sha256', $string_to_sign, $kSigning);

// Authorization
				$authorization = [
					'Credential=' . $aws_access_key_id . '/' . implode('/', $scope),
					'SignedHeaders=' . $signed_headers,
					'Signature=' . $signature,
				];
				$authorization = 'AWS4-HMAC-SHA256' . ' ' . implode(',', $authorization);

// Curl headers
				$curl_headers = ['Authorization: ' . $authorization];
				foreach ($request_headers as $key => $value) {
					$curl_headers[] = $key . ": " . $value;
				}

				$url = 'https://' . $host_name . '/' . $content_title;
				$ch = curl_init($url);
				curl_setopt($ch, CURLOPT_HEADER, false);
				curl_setopt($ch, CURLOPT_HTTPHEADER, $curl_headers);
				curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
				curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
				curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
				curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
				curl_setopt($ch, CURLOPT_POSTFIELDS, $content);
				$response = curl_exec($ch);
				$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
				if ($http_code != 200) {
					exit('Error : Failed to upload');
				}

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$aws_access_key_id = 'ZZIAXB6XXPMGHXM3AJBXX';

$aws_secret_access_key = 'X/4BDguGDzRSvuxl5tHq3ZA9NvbQvURXs2vtiDDD';

// Bucket

$bucket_name = 'bucketname';

// AWS region and Host Name (Host names are different for each AWS region)

// As an example these are set to us-east-1 (US Standard)

$aws_region = 'us-east-2';

$host_name = $bucket_name . '.s3.amazonaws.com';

// Server path where content is present. This is just an example

$content_path = 'sourcepath.png';

$content = file_get_contents($content_path);

// AWS file permissions

$content_acl = 'public-read';

// MIME type of file. Very important to set if you later plan to load the file from a S3 url in the browser (images, for example)

$content_type = 'image/png';

// Name of content on S3

$content_title = 's3folder/s3image.png'

// Service name for S3

$aws_service_name = 's3';

// UTC timestamp and date

$timestamp = gmdate('Ymd\THis\Z');

$date = gmdate('Ymd');

// HTTP request headers as key & value

$request_headers = array();

$request_headers['Content-Type'] = $content_type;

$request_headers['Date'] = $timestamp;

$request_headers['Host'] = $host_name;

$request_headers['x-amz-acl'] = $content_acl;

$request_headers['x-amz-content-sha256'] = hash('sha256', $content);

// Sort it in ascending order

ksort($request_headers);

// Canonical headers

$canonical_headers = [];

foreach ($request_headers as $key => $value) {

$canonical_headers[] = strtolower($key) . ":" . $value;

}

$canonical_headers = implode("\n", $canonical_headers);

// Signed headers

$signed_headers = [];

foreach ($request_headers as $key => $value) {

$signed_headers[] = strtolower($key);

}

$signed_headers = implode(";", $signed_headers);

// Cannonical request

$canonical_request = [];

$canonical_request[] = "PUT";

$canonical_request[] = "/" . $content_title;

$canonical_request[] = "";

$canonical_request[] = $canonical_headers;

$canonical_request[] = "";

$canonical_request[] = $signed_headers;

$canonical_request[] = hash('sha256', $content);

$canonical_request = implode("\n", $canonical_request);

$hashed_canonical_request = hash('sha256', $canonical_request);

// AWS Scope

$scope = [];

$scope[] = $date;

$scope[] = $aws_region;

$scope[] = $aws_service_name;

$scope[] = "aws4_request";

// String to sign

$string_to_sign = [];

$string_to_sign[] = "AWS4-HMAC-SHA256";

$string_to_sign[] = $timestamp;

$string_to_sign[] = implode('/', $scope);

$string_to_sign[] = $hashed_canonical_request;

$string_to_sign = implode("\n", $string_to_sign);

// Signing key

$kSecret = 'AWS4' . $aws_secret_access_key;

$kDate = hash_hmac('sha256', $date, $kSecret, true);

$kRegion = hash_hmac('sha256', $aws_region, $kDate, true);

$kService = hash_hmac('sha256', $aws_service_name, $kRegion, true);

$kSigning = hash_hmac('sha256', 'aws4_request', $kService, true);

// Signature

$signature = hash_hmac('sha256', $string_to_sign, $kSigning);

// Authorization

$authorization = [

'Credential=' . $aws_access_key_id . '/' . implode('/', $scope),

'SignedHeaders=' . $signed_headers,

'Signature=' . $signature,

];

$authorization = 'AWS4-HMAC-SHA256' . ' ' . implode(',', $authorization);

// Curl headers

$curl_headers = ['Authorization: ' . $authorization];

foreach ($request_headers as $key => $value) {

$curl_headers[] = $key . ": " . $value;

}

$url = 'https://' . $host_name . '/' . $content_title;

$ch = curl_init($url);

curl_setopt($ch, CURLOPT_HEADER, false);

curl_setopt($ch, CURLOPT_HTTPHEADER, $curl_headers);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");

curl_setopt($ch, CURLOPT_POSTFIELDS, $content);

$response = curl_exec($ch);

$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);

if ($http_code != 200) {

exit('Error : Failed to upload');

}

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