AWS使用PHP API转录：限制例外：超出费率

Trying to transcribe an audio file stored in a S3 bucket which I have access, with AWS SDK PHP API, as follows, gives me a throttling exception: rate exceeded.

I have read the documentation a dozen of times and can't find a simple working example that shows how to successfully transcribe a file with AWS transcribe and their PHP API.

date_default_timezone_set('America/New_York');
try 
{
    require '/var/www/html/aws/sdk/aws-autoloader.php';
} 
catch (Exception $e) 
{
    echo 'Caught exception: ',  $e->getMessage(), "
";
}
use Aws\TranscribeService\TranscribeServiceClient;

$client = new Aws\TranscribeService\TranscribeServiceClient([
    'version'       => 'latest',
    'region'        => 'us-east-1',
    'credentials'   => [
                    'key'           => 'xxxx',
                    'secret'        => 'yyyy',
                    'curl.options'  => array(CURLOPT_VERBOSE => true)
                    ]
        ]);
$job_name = "tjob".date("mdyhisa");
$job_uri = "https://s3.amazonaws.com/....mp3";          

$result = $client->startTranscriptionJob([
    'LanguageCode' => 'en-US', 
    'Media' => [ 
    'MediaFileUri' => "$job_uri",
    ],
    'MediaFormat' => 'mp3', 

    'TranscriptionJobName' => "$job_name", 
]);
/* removing this loop and the sleep() below would retrieve some structured response, 
but of course the operation status is IN_PROGRESS */
while(true)
{
    /* added to discover if holding a few seconds would work: it doesn't
       and gives back a 504 Gateway Timeout */
    sleep(rand(3,5));
    /* -- */
    $result = $client->getTranscriptionJob(['TranscriptionJobName' => "$job_name"]);
    if ( ($result['TranscriptionJob']['TranscriptionJobStatus']=='COMPLETED') || ($result['TranscriptionJob']['TranscriptionJobStatus']=='FAILED'))
    {
        break;  
    }
}
var_dump($result);

So question is: how to get the transcription output?

By the way, I don't need this asynchronously...it is fine for my little project to wait for it to process and return.

Your code is probably working fine, but your while(true) loop is calling the API too many times, hence the throttling exception: rate exceeded error.

I suggest you put a delay of 5 seconds between each call to getTranscriptionJob. I've found that a job can take around 60 seconds to complete, so you don't need to call it continuously.