s3-listing-object-keys.php

<?php
// Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: MIT-0 (For details, see https://github.com/awsdocs/amazon-s3-developer-guide/blob/master/LICENSE-SAMPLECODE )

require 'vendor/autoload.php';

use Aws\S3\S3Client;
use Aws\S3\Exception\S3Exception;

$bucket = '*** Your Bucket Name ***';

// Instantiate the client.
$s3 = new S3Client([
    'version' => 'latest',
    'region'  => 'us-east-1'
]);

// Use the high-level iterators (returns ALL of your objects).
try {
    $objects = $s3->getPaginator('ListObjects', [
        'Bucket' => $bucket
    ]);

    echo "Keys retrieved!" . PHP_EOL;
    foreach ($objects as $object) {
        echo $object['Key'] . PHP_EOL;
    }
} catch (S3Exception $e) {
    echo $e->getMessage() . PHP_EOL;
}

// Use the plain API (returns ONLY up to 1000 of your objects).
try {
    $result = $s3->listObjects([
        'Bucket' => $bucket
    ]);

    echo "Keys retrieved!" . PHP_EOL;
    foreach ($result['Contents'] as $object) {
        echo $object['Key'] . PHP_EOL;
    }
} catch (S3Exception $e) {
    echo $e->getMessage() . PHP_EOL;
}