aws-php-sdk-describe-elb.php

<?php
/**
 * 1st. make sure you've created your access key in IAM. then configure credential file in the following path
 * 
 * ~/.aws/credentials
 * enter credentials info as below..
[default]
aws_access_key_id = YOUR_ACCESS_KEY_ID
aws_secret_access_key = YOUR_SECRET_ACCESS_KEY

[others_profile_if_want_to]
aws_access_key_id = YOUR_ACCESS_KEY_ID
aws_secret_access_key = YOUR_SECRET_ACCESS_KEY
 * 
 * 
 */
	include('aws-autoloader.php');
	use Aws\ElasticLoadBalancing\ElasticLoadBalancingClient;

	$client = ElasticLoadBalancingClient::factory(array(
	    'profile' => 'default',  //as per your credentials file. 
	    'region'  => 'us-west-2' //your aws region
	));
	
	$result = $client->describeLoadBalancers(
	array(
	    'LoadBalancerNames' => array('YOUR_ELB_NAME')
	));
	print_r($result);
?>