Upload resized image on amazon S3 with PHP SDK - php

Question

I have a script wich resize and crop an image and I would like to upload the image on my amazon S3 on the fly.
The problem is that I get an error message when I try to run my script because I guess the sourcefile is not recognized as a direct path from the disk ($filepath). Do you have any idea to get through this situation?
Fatal error: Uncaught exception 'Aws\Common\Exception\InvalidArgumentException' with message 'You must specify a non-null value for the Body or SourceFile parameters.' in phar:///var/www/submit/aws.phar/Aws/Common/Client/UploadBodyListener.php:...
$myResizedImage = imagecreatetruecolor($width,$height);
imagecopyresampled($myResizedImage,$myImage,0,0,0,0, $width, $height, $origineWidth, $origineHeight);
$myImageCrop = imagecreatetruecolor(612,612);
imagecopy( $myImageCrop, $myResizedImage, 0,0, $posX, $posY, 612, 612);
//Save image on Amazon S3
require 'aws.phar';
use Aws\S3\S3Client;
use Aws\S3\Exception\S3Exception;
$bucket = 'yol';
$keyname = 'image_resized';
$filepath = $myImageCrop;
// Instantiate the client.
$s3 = S3Client::factory(array(
'key' => 'private-key',
'secret' => 'secrete-key',
'region' => 'eu-west-1'
));
try {
// Upload data.
$result = $s3->putObject(array(
'Bucket' => $bucket,
'Key' => $keyname,
'SourceFile' => $filepath,
'ACL' => 'public-read',
'ContentType' => 'image/jpeg'
));
// Print the URL to the object.
echo $result['ObjectURL'] . "\n";
} catch (S3Exception $e) {
echo $e->getMessage() . "\n";
}

Answer 1

You need to convert your image resource to an actual string containing image data. You can use this function to achieve this:
function image_data($gdimage)
{
ob_start();
imagejpeg($gdimage);
return(ob_get_clean());
}

Answer 2

You are setting the SourceFile of the upload to $filepath, which is assigned from $myImageCrop = imagecreatetruecolor(...). As such, it's not actually a path at all — it's a GD image resource. You can't upload these to S3 directly.
You'll need to either write that image out to a file (using e.g. imagejpeg() + file_put_contents()), or run the upload using data in memory (again, from imagejpeg() or similar).

Answer 3

require 'aws.phar';
use Aws\S3\S3Client;
use Aws\S3\Exception\S3Exception;
$bucket = 'kkkk';
$keyname = 'test';
// $filepath should be absolute path to a file on disk
$newFielName = tempnam(null,null); // take a llok at the tempnam and adjust parameters if needed
imagejpeg($myImageCrop, $newFielName, 100); // use $newFielName in putObjectFile()
$filepath = $newFielName;
// Instantiate the client.
$s3 = S3Client::factory(array(
'key' => 'jjj',
'secret' => 'kkk',
'region' => 'eu-west-1'
));
try {
// Upload data.
$result = $s3->putObject(array(
'Bucket' => $bucket,
'Key' => $keyname,
'SourceFile' => $filepath,
'ACL' => 'public-read',
'ContentType' => 'image/jpeg'
));
// Print the URL to the object.
echo $result['ObjectURL'] . "\n";
} catch (S3Exception $e) {
echo $e->getMessage() . "\n";
}