PHP AWS SDK 创建 S3Client 的致命错误

问题描述

尝试使用适用于 PHP 的 AWS 开发工具包列出存储桶，但在像这样设置 S3Client 后我不断收到此错误：

<?PHP  
require getcwd() . '/aws.phar' /*v3 of the SDK*/;

use Aws\S3\S3Client;
use Aws\Exception\AwsException;

$credentials = new Aws\Credentials\Credentials('I put my','credentials here');

$s3 = new Aws\S3\S3Client([
    'region' => 'us-east-1',/*also tried different regions*/
    'version' => '2006-03-01',/*also tried latest*/
    'credentials' => $credentials /*have also tried putting credentials here*/
]);

$s3->listBuckets(); /*still the same error even if I remove this line */ ?>

如果我至少没有填写区域、版本和凭据选项，SDK 实际上会返回一个错误，告诉我填写它们。 这是上面代码返回的错误：

致命错误：未捕获错误：调用 phar:///var/www/mail/aws.phar/JmesPath/Lexer.PHP:343 中未定义的函数 JmesPath\mb_strlen() 堆栈跟踪：#0 phar:// /var/www/mail/aws.phar/JmesPath/Parser.PHP(76): JmesPath\Lexer->tokenize() #1 phar:///var/www/mail/aws.phar/JmesPath/AstRuntime.PHP (42): JmesPath\Parser->parse() #2 phar:///var/www/mail/aws.phar/JmesPath/Env.PHP(33): JmesPath\AstRuntime->__invoke() #3 phar: ///var/www/mail/aws.phar/Aws/Endpoint/PartitionEndpointProvider.PHP(117): JmesPath\Env::search() #4 phar:///var/www/mail/aws.phar/Aws /Endpoint/PartitionEndpointProvider.PHP(99): Aws\Endpoint\PartitionEndpointProvider::mergePrefixData() #5 phar:///var/www/mail/aws.phar/Aws/ClientResolver.PHP(740): Aws\Endpoint\ PartitionEndpointProvider::defaultProvider() #6 phar:///var/www/mail/aws.phar/Aws/ClientResolver.PHP(295): Aws\ClientResolver::_default_endpoint_provider() #7 phar:///var/www /mail/aws.phar/Aws/AwsClient.PHP(199): Aws\ClientResolver->resolve() #8 phar:///var/www/mail/aws.ph ar/Aws/S3/S3Client.PHP(346): Aws\AwsClie in phar:///var/www/mail/aws.phar/JmesPath/Lexer.PHP on line 343

PHP 版本是 7.4，我安装了 simplexml 扩展，正如亚马逊所说的那样。 服务器是 AWS Lightsail Ubuntu 上的 Apache。

解决方法

启用 mbstring 扩展（多字节字符串），正如 Chris 所建议的那样！