Php programming language tutorial for beginners. Personal experience as proof: the PHP programming language is the main one on the Internet. Bootstrap framework: fast adaptive layout

Outputting HTML using PHP

As I mentioned earlier, PHP and HTML work great together. Just because we're inside a block of PHP code doesn't mean we can't display text in a paragraph or in bold.

This is the text in bold."; ?>

As you may have guessed, the result of this code will be the output of this line in bold to the browser.

Create the first function

First of all, a few words about what a function is.

Function- this is a kind of mini-program that performs a certain useful work and gives us the result.

It makes sense to use functions in cases where you need to perform similar, template actions. In this case, we write such a mini-program, which significantly reduces the amount of code and, accordingly, our efforts.

The syntax when creating a function is as follows:

Let's say if we want to write a function that calculates the sum of the numbers 10 and 5, we can do this:

We create a function called sum and in its body we indicate that it should display the sum of the numbers 10 and 5. After this, we call the function sum. Calling a function essentially means executing it.

In this example we do not use any arguments (see function syntax above). What are arguments and what are they needed for, we will look directly at the example. Let's modify the code that we have, making it more flexible and functional:

Now when creating a function sum we indicate two arguments in parentheses, separated by commas - $slagaemoe1 And $slagaemoe2. In the body of the function, we add and display not specific numbers, but the values ​​of variables $slagaemoe1 And $slagaemoe2(i.e. these same arguments).

Now we just need to call the function, passing it two arguments in parentheses that it “expects”. We specify the numbers 10 and 5, resulting in 15. By passing the function sum other numbers, of course, we will get a different answer.

I hope that this review helped you understand what PHP is and what it is needed for, what advantages it has over static HTML, and how you can use some of its simplest features.

Dmitry Naumenko.

P.S. Do you want to move further in mastering PHP? Pay attention to premium lessons on various aspects of website building, including PHP programming, as well as free course to create your own CMS system in PHP from scratch. All this will help you master this powerful web development language faster and easier:

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From the author: Is it necessary to know the PHP programming language? If you are going to throw in your lot with website building, you will have to. Even if you really don’t want to! Why is that? We will try to answer all the common “whys” associated with this language in our material.

The solution that “holds” the Internet together

This is exactly how one of my acquaintances, who has been creating Internet resources for more than a decade, described PHP. And he’s right, probably 200% percent (or maybe more).

The very history of the emergence of this language suggests that it was born to “blind” the current version of the Network to which we are so accustomed. This is probably why some people still cannot realize its power, even after learning the basics of PHP programming.

Proving the role of PHP in creating the Internet is a thankless task. Here, as they say, supporters of other server-side languages ​​can begin to speak out. They say that the “hypertext preprocessor” (as the abbreviation PHP stands for) has already outlived its usefulness. Many of its functions are implemented even in…

Well, shouting and waving your arms, extolling your programming language, which you specialize in, is a simple matter. But the best “evidence” indicating the demand for PHP is its prevalence.

Next rating program languages, compiled by TIOBE specialists last summer, tells us that PHP has been consistently among the top for several years. You haven't started searching by programming language yet PHP tutorial? You'll be running soon.

If you are wondering why Java has jumped so much, then the answer is: thanks to the Android mobile operating system, applications for which are developed in this language.

Own rake

Back in the early 2000s, I was engaged in “research” in the field of programming. I kept trying to figure out which “party” of developers I should join, which discipline I should devote my life to studying.

In principle, I did not consider PHP as a programming language for beginners. He seemed too confused. Here's the other thing about ASP.NET: a commercial language based on C#. Oh, what castles in the air I built back then! And there were all the prerequisites for this:

The technology was developed by such a “thought giant” as Microsoft.

Availability of specialized software – powerful editor Visual Studio.

Extensive and well described documentation.

Hope for a “healthy” future.

ASP.NET, unlike PHP, was much easier for me. Visual Studio automated a large number of operations for writing server scripts. For example, thanks to the excellent visual editor it only took a few minutes to create a web page. By dragging and dropping controls and styling them in the editor, you could make a website in less than an hour!

But the PHP programming language from scratch didn’t work out for me right away. Honestly, I tried to make friends with him (I had to pass the exam somehow). But when studying its basics, it seemed callous and even cold to me.

In general, I took up ASP.NET. I created my first website. Well, everything seems to be working in the development environment. Cross-browser compatibility checked in several popular browsers. I think it’s time to “fight.” So to speak, show your “brainchild” to the whole country (at least). This is where the “rakes” turned out to be.

My attempts to find hosting with ASP.NET support on the RuNet were never successful. There were, of course, several paid platforms, but the prices for hosting a website on them were clearly not “student” prices.

Somehow I dug up in Burzhunet free option hosting (by the way, sponsored by Microsoft). Well, I clicked, enjoyed the breadth of my thoughts, but things didn’t go any further. And all due to the fact that most of the sites were already made in PHP.

After you decide and understand for sure that you are ready to learn the PHP programming language, look for a tutorial for beginners “for yourself.” The main thing is that you understand what the author of the publication wants to convey to his readers. Immediately get ready to pay a good amount of money for quality literature.

But it's better to apply A complex approach- add also sensible. This will allow you to hone your skills immediately practical examples. And my advice to you is to do less copy-pasting code! I’ll explain why now.

When you type example scripts yourself, you will quickly get used to it and remember the features PHP syntax. As for literature, choose a tutorial with the basics of programming in PHP. And it is advisable that the author post the code of all the examples given on his resource on the Internet.

Also, immediately before starting training, download and install Open Server. This software package includes all the environments you need to write and test code.

Well, let me take my leave for today. Forgive (if anything) for the excessive overview of the content of the article, but this is necessary to understand the features of this language (after all, it is server-based). I wish you to quickly grasp the basics of the PHP programming language and start real coding!

I had an idea to tell you about the language PHP. The main site of the developers of this language is http://www.php.net, where you can download the language interpreter and learn almost everything about the language (for those who are not afraid of English).

I won’t tell you anything about who, when and why created this language. Does it really matter?! If you are interested, you can easily find information about this on the Internet. Let me just say that it is a simple and very powerful language for creating dynamic web pages. It was specially developed for this purpose and therefore any work with text and data in any form on PHP done easily and beautifully.

Now we won’t say anything about setting it up. Most likely you are already using ready-made hosting with installed PHP, so it has already been set up for you. The qualifications and knowledge of the server administrator are not known, because it is difficult to say how it was set up. I want to dedicate this step to exactly that. My task is to scare you terribly, so that when developing your programs you will be afraid for everything. The Internet is full of scammers, hackers, lammers and other computer entities :) Your program must be able to withstand everyone. It must cope with configuration errors made by the administrator, it must adequately handle tricky requests that a hacker tries to feed it, or erroneous requests sent by others. Simply put, you must learn to develop programs for the Internet using PHP so that they are ready for anything. This is the only way to talk about the correct operation, and most importantly, the security of your data, website and possibly even your entire business.

I will briefly try to formulate the basic requirements for a good program for PHP, with which there will be few problems.

The first is embedding the program in code HTML pages. I think it's no secret to you that PHP file is regular file HTML with special inserts code in a language very strongly reminiscent in syntax C/C++ And Perl. So these code insertions are separated from HTML document special characters start of code and its end ?> :

HTML document