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<?php

if (!class_exists('S3')) require_once 'S3.php';

// AWS access info
if (!defined('awsAccessKey')) define('awsAccessKey', '...');
if (!defined('awsSecretKey')) define('awsSecretKey', '...');

// Check for CURL


S3::setAuth(awsAccessKey, awsSecretKey);

$bucket = 'my_bucket';
$path = ''; // Can be empty ''


$lifetime = 20; // Period for which the parameters are valid
$maxFileSize = (1024 * 1024 * 50); // 50 MB
$metaHeaders = array('uid' => 123);
$requestHeaders = array(
    'Content-Type' => 'application/octet-stream',
    'Content-Disposition' => 'attachment; filename=${filename}'
);

$params = S3::getHttpUploadPostParams(
    $bucket,
    $path,
    S3::ACL_PUBLIC_READ,
    $lifetime,
    $maxFileSize,
    200, // Or a URL to redirect to on success
    $metaHeaders,
    $requestHeaders,
    false // False since we're not using flash
);

$uploadURL = 'https://' . $bucket . '.s3.amazonaws.com/';

?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
    <title>S3 Form Upload</title>
</head>
<body>
    <form method="post" action="<?php echo $uploadURL; ?>" enctype="multipart/form-data">
<?php
    foreach ($params as $p => $v)
        echo "        <input type=\"hidden\" name=\"{$p}\" value=\"{$v}\" />\n";
?>
        <input type="file" name="file" />&#160;<input type="submit" value="Upload" />
    </form>
</body>
</html>