【正文】 HTML file (add text, tables, images, or sounds).2. Save your HTML file as .3. Use an FTP program to upload your file to the Web server.4. Point your browser to the address of the file on your Web server (for example, ).The process you would use to create a PHP program is much the same:1. Create your HTML file (containing text, tables, images, or sounds) and insert PHP code where desired.2. Save your PHP file as .3. Use an FTP program to upload your file to the Web server.4. Point your browser to the address of the file on your Web server (such as ).The process of creating a PHP program isn’t much different from the process you follow to create a regular HTML page.Now that you’ve seen the overall process, let’s take a look at our first PHP program. After reading the following example, you’ll learn what separates it from a normal HTML file, how to upload it to your Web server, and what the page should look like viewed in your browser.! File: htmlheadtitlePHP/title/headbody bgcolor=”white” text=”black”h4PHP/h4?php/* Display a text message */echo “Hello, world! This is my first PHP program.”。lt。 it has grown to be able to do that and just about anything else. To give you a better idea of what PHP can do, here are some of its mon uses:? Feedback forms? Shopping carts and other types of emerce systems? User registration, access control, and management for online subscription services? Guest books? Discussion and message boards2 If You Are New to ProgrammingIf you’ve never written a puter program before, the whole idea may be quite intimidating. Most programmers will probably tell you (if they aren’t embarrassed to admit it) that they were intimidated when they began. However, the programming process isn’t all that difficult and, contrary to popular belief, you don’t have to have an extremely high IQ to be good at it.When you write a program, your main goal is to translate your idea into a language that the puter can understand. For example, if you were teaching a person how to cook hamburgers, you would first describe the process of forming the ground beef into patties. Then, you would tell the person how to put the burgers on the grill, how long to leave them there, and finally how to remove them.Of course, just because you can describe the process of making hamburgers doesn’t mean PHP is going to be cooking anything for you anytime soon. The point is, if you can describe a process like I just described making hamburgers, you can write a program.Writing a PHP program is simply the process of describing to PHP how to do something. By the time you’ve finished reading this article, you will understand all the concepts behind writing a PHP program. Those concepts are like the words and sentences used to describe hamburgers. The more you read this article, the more “words” you will understand, and the better you will be able to “describe” your task to PHP. Thus, you will learn to write PHP programs to suit whatever need or idea you have, and soon it won’t be any more intimidating than telling someone how to cook hamburgers.Some programming problems might be very plex when examined as a whole. For example, creating a shopping cart is definitely not a simple task. However, a shopping cart can be broken into a few smaller tasks. Those tasks might include adding and removing items, which are both tasks that can break into even smaller tasks. You will find that any task, no matter how plex, can be broken into smaller ones until each task is simple enough that breaking it down further is unnecessary. This process is explained in more detail when you begin creating programs with more plexity3 Writing a Basic PHP ProgramBefore we get into an actual program, let’s take a look at the steps we’ll take to create one. The steps aren’t plicated。1 Why PHP?PHP is an excellent choice for Web programming. It has many advantages over other languages, including other Weboriented languages. To get a very general understanding of how the mon Web programming languages pare, let’s pare them.ASP is Microsoft’s Web programming environment. (It’s not a language itself because it allows the programmer to choose from a few actual languages, such as VBScript or JScript.) ASP is simple, but too simple for programs that use plex logic or algorithms.Besides ASP’s oversimplicity, many panies find it hard to budget for the expense of Microsoft licenses. Without even considering hardware costs, a Microsoft server could cost thousands of dollars in licensing, whereas a parable Unixbased operating system running PHP could be free.Another language well known for its use on the Web is Sun Microsystems’ Java. Java is praised for being platformindependent (a program written in Java can be run on virtually any puter without having to make any modifications to the program).Although Java does have its advantages, it has serious downsides in development time, development cost, and execution speed. Java development is timeconsuming because projects in Java must follow strict rules (imposed by Java) that require extensive planning. In addition to high development time, the cost is also high because Java developers are expensive to hire. The cost is therefore potentially much higher than it would be if the project were done in another language. Even after the project is built, a program written in Java takes longer to run than one written in one of the other languages to which we’re paring.Overall, when pared to Java, PHP es out with flying colors. It is not unheard of for a Java project to take two or three times the time to develop pared to a similar project in PHP. On top of that,