pear-services-amazon-sqs-receive.php

<?php
require 'Services/Amazon/SQS/Queue.php';

define('AMAZON_ACCESS_KEY', your access key);
define('AMAZON_SECRET_ACCESSKEY', your secret access key);

// queueのURIを指定
define('QUEUE_URL', 'http://queue.amazonaws.com/508403871985/test-queue');

$sqs = new Services_Amazon_SQS_Queue(QUEUE_URL, AMAZON_ACCESS_KEY, AMAZON_SECRET_ACCESSKEY);

while(1) {
    // 1件だけ取得
    list($item) = $sqs->receive(1);

    if (empty($item)) {
        echo 'queue is empty!', PHP_EOL;
        sleep(10);
        continue;
    }   

    echo 'item body is ', $item['body'], PHP_EOL;

    // ここで時間のかかる作業をやる

    $sqs->delete($item['handle']);
    echo 'item delete.', PHP_EOL;
}