PHP is a technology to build a dynamic website. For example, the content of a website can dynamically changed as we want by changing the settings at the administrator panel. We can add, delete and edit the article, changing the website settings and appearances without touching any code that are confusing and waste a lot of time.
Each PHP script is enclosed by <?php and ?>. Generally, you can use only <? ?> (without php). but, It’s not recommended. Just use <?php instead of <? because using <? without php could result ambiguous meaning to XML document that started with <?xml and some web servers will not recognize it as PHP Script.
