Upload to Amazon S3 Instead of Server for Sendy Email Image Uploads

gistfile1.php

//Using S3.php from https://github.com/tpyo/amazon-s3-php-class. Place it in includes/helpers
//Replaces Sendy's includes/create/upload.php

<?php 
	include('../functions.php');
	include('../login/auth.php');
	require_once('../helpers/S3.php');

	//Init
	$file = $_FILES['file']['tmp_name'];
	$fileName = $_FILES['file']['name'];
	$extension_explode = explode('.', $fileName);
	$extension = $extension_explode[count($extension_explode)-1];
	$time = time();
	$allowed = array("jpeg", "jpg", "gif", "png");

	if(in_array($extension, $allowed)) {
        $awsAccessKey = get_app_info('s3_key');
        $awsSecretKey = get_app_info('s3_secret');
        $bucketName = 'BUCKETNAME'; //Change accordingly
        $endpoint = 's3-ap-southeast-1.amazonaws.com'; //Change accordingly
        $s3 = new S3($awsAccessKey, $awsSecretKey, false, $endpoint);
        $s3Filename = $time.baseName($fileName);

		if ($s3 -> putObject($s3->inputFile($file), $bucketName, $s3Filename, S3::ACL_PUBLIC_READ)) {
			$array = array(
        		'filelink' => 'http://'.$endpoint.'/'.$bucketName.'/'.$s3Filename
        	);
        	echo stripslashes(json_encode($array));
		}
		else exit;
    }
    else exit;
?>

Does this work in 2024? :) Thanks!