AWS PHP SDK缺少DOM套件解決辦法

服務平台：Amazon Web Service(AWS)
環境：Amazon Elastic Compute Cloud (Amazon EC2)

工具：putty

在執行「/aws-sdk-for-php/_compatibility_test/sdk_compatibility_test.php」可以測得出使用AWS套件的最低需求為何，但把套件上傳至EC2時發現缺少的「DOM（What You Have：Disabled）」的套件，所以我們必須要在EC2安裝此套件

Minimum Requirements

Test	Should Be	What You Have
PHP	5.2 or newer	5.3.8
cURL	7.15.0 or newer, with SSL	7.21.7 (OpenSSL/1.0.0e)
SimpleXML	Enabled	Enabled
DOM	Enabled	Disabled
SPL	Enabled	Enabled
JSON	Enabled	Enabled
PCRE	Enabled	Enabled
File System Read/Write	Enabled	Enabled

1. 切換至管理者：[kejyun@ip-XXX-XXX-XXX-XXX ~]$ sudo -s
   
2. 安裝php-xml套件：[root@ip-XXX-XXX-XXX-XXX ~]# yum install php-xml
3. 安裝完畢執行「/aws-sdk-for-php/_compatibility_test/sdk_compatibility_test.php」檢查AWS SDK最低需求是否符合 ，「DOM為Enabled（What You Have： Enabled ）」即表示完成了

Minimum Requirements

Test	Should Be	What You Have
PHP	5.2 or newer	5.3.8
cURL	7.15.0 or newer, with SSL	7.21.7 (OpenSSL/1.0.0e)
SimpleXML	Enabled	Enabled
DOM	Enabled	Enabled
SPL	Enabled	Enabled
JSON	Enabled	Enabled
PCRE	Enabled	Enabled
File System Read/Write	Enabled	Enabled