PHP with AWS

https://docs.aws.amazon.com/sdk-for-php/v3/developer-guide/welcome.html
    install AWS CLI first
    yum install php-xml
    in apache httpd.conf: setenv HOME /usr/share/httpd
    After checking selinux log /var/log/audit/audit.log I could see this was denied by selinux:
         tune selinux or simply disable: setenforce 0; sestatus
https://docs.aws.amazon.com/aws-sdk-php/v3/api/class-Aws.Ec2.Ec2Client.html
https://docs.aws.amazon.com/sdk-for-php/v3/developer-guide/guide_jmespath.html
https://github.com/awsdocs/aws-doc-sdk-examples/tree/master/php/example_code
https://www.php.net/manual/en/function.var-dump.php

https://learnxinyminutes.com/docs/php
http://phpfiddle.org/lite
http://ideone.com/
php -a

<?php
require 'vendor/autoload.php';
use Aws\Ec2\Ec2Client;

$ec2Client = new Aws\Ec2\Ec2Client([
    'region' => 'us-west-2',
    'version' => '2016-11-15',
    'profile' => 'default' // profile under .aws on apache home directory
]);
$result = $ec2Client->describeInstances();
var_dump($result);

<?php
require 'vendor/autoload.php';
use Aws\Ec2\Ec2Client;

$ec2Client = new Aws\Ec2\Ec2Client([
    'region' => 'us-west-2',
    'version' => '2016-11-15',
    'profile' => 'default'
]);
$action = 'START';
$instanceIds = array('InstanceID1', 'InstanceID2');
if ($action == 'START') {
    $result = $ec2Client->startInstances(array(
        'InstanceIds' => $instanceIds,
    ));
} else {
    $result = $ec2Client->stopInstances(array(
        'InstanceIds' => $instanceIds,
    ));
}
var_dump($result);