Creates an Amazon S3 object from a string with PHP

save_to_s3.php

<?php

/**
 * 	Creates an Amazon S3 object from a string
 *
 * @param $input    String (Required) The data to store in the object
 * @param $bucket   String (Required) Name of the bucket to use.
 * @param $filename String (Required) Filename for the object.
 * @param $options  Array  (Optional) An associative array of options specified below.
 *
 * Supported keys for the $options param:
 *  objectAcl    Constant The ACL settings for the specified object. [Allowed values: `AmazonS3::ACL_PRIVATE`, `AmazonS3::ACL_PUBLIC`, `AmazonS3::ACL_OPEN`, `AmazonS3::ACL_AUTH_READ`, `AmazonS3::ACL_OWNER_READ`, `AmazonS3::ACL_OWNER_FULL_CONTROL`]. Defaults to AmazonS3::ACL_PUBLIC
 *  compress     Boolean  Whether to compress the input or not.
 *  complvl      Integer  Compression level ranges betweent 0-9 and defaults to 9
 *  rss          Boolean  Whether to use Reduced Redundancy storage or not.
 *  bucketRegion Constant If the bucket wasn't found, it will be created in this region. Defaults to AmazonS3::REGION_US_E1
 *  bucketAcl    Constant same as objectAcl
 *
 * @returns String Url of the object created
 */
function saveToS3($input, $bucket, $filename, $options = array()) {
	$defaults = array(
		'objectAcl'    => AmazonS3::ACL_PUBLIC,
		'compress'     => true,
		'complvl'      => 9,
		'rrs'          => false,
		'bucketRegion' => AmazonS3::REGION_US_E1,
		'bucketAcl'    => AmazonS3::ACL_PRIVATE
	);
	$options  = array_merge($defaults, $options);
	
	$s3 = new AmazonS3();
	
	if (!$s3->if_bucket_exists($bucket)) {
		if (!$s3->create_bucket($bucket, $options['bucketRegion'], $options['bucketAcl'])->isOk()) {
			trigger_error('Bucket not found and could not be created', E_USER_NOTICE);
			return false;
		}
	}
	
	if ($options['compress']) {
		$input = gzcompress($input, $options['complvl']);
	}
	
	$objectOpts = array('body' => $input, 'acl' => $options['objectAcl']);
	if ($options['rrs']) {
		$objectOpts['storage'] = AmazonS3::STORAGE_REDUCED;
	}
	
	$response = $s3->create_object($bucket, $filename, $objectOpts);
	
	if (!$response->isOK()) {
		trigger_error('Object could not be created', E_USER_NOTICE);
		return false;
	}
	
	return $response->header['_info']['url'];
}