Course Content

Introduction to PHP

1. First Acquaintance

Features of the PHP Language First Application Comments in PHP Basic Math Operations Math Expressions

2. Variables and Data Types

Data Types Variables Strings Boolean Comparison Operations

3. Conditional Statements

If Statement Else Statement Else If Statement Switch-Case Statement

4. Arrays

Creating Arrays Indexes Associative Arrays Adding and Removing Elements in Arrays

5. Loops

Loops Сoncept While-Loops Do-While For-Loops Increment and Decrement

First Application

Let's begin with a classic programming example — "Hello World". This program serves as the first step for many in programming, demonstrating the basic principles of the language.

main


              123
            
<?php 
echo "Hello, World!";
?>

Code Syntax

Let's break down the syntax of this program in detail:

<?php and ?>: These indicate the start and end of PHP code. All PHP instructions must be placed between these tags. This defines that the text within these tags will be interpreted as PHP code;
echo: This is a PHP language construct used to output data. In our case, we use echo to display the string "Hello, World!";
"Hello, World!": This is the text we are echoing with echo. In PHP, strings can be specified in either single or double quotes. It's important that the closing quote matches the opening one;
The semicolon (;) is used to terminate statements. This is necessary so that the PHP interpreter knows where one command ends and the next begins. Without the semicolon, PHP wouldn't be able to correctly parse the code, leading to syntax errors.

Task

Swipe to show code editor

Your challenge is to output "Hello, Codefinity!" in the console.

_{Once you've completed this task, click the button below the code to check your solution.}

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 1. Chapter 2

First Application

Let's begin with a classic programming example — "Hello World". This program serves as the first step for many in programming, demonstrating the basic principles of the language.

main


              123
            
<?php 
echo "Hello, World!";
?>

Code Syntax

Let's break down the syntax of this program in detail:

<?php and ?>: These indicate the start and end of PHP code. All PHP instructions must be placed between these tags. This defines that the text within these tags will be interpreted as PHP code;
echo: This is a PHP language construct used to output data. In our case, we use echo to display the string "Hello, World!";
"Hello, World!": This is the text we are echoing with echo. In PHP, strings can be specified in either single or double quotes. It's important that the closing quote matches the opening one;
The semicolon (;) is used to terminate statements. This is necessary so that the PHP interpreter knows where one command ends and the next begins. Without the semicolon, PHP wouldn't be able to correctly parse the code, leading to syntax errors.

Task

Swipe to show code editor

Your challenge is to output "Hello, Codefinity!" in the console.

_{Once you've completed this task, click the button below the code to check your solution.}

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 1. Chapter 2

First Application

Let's begin with a classic programming example — "Hello World". This program serves as the first step for many in programming, demonstrating the basic principles of the language.

main


              123
            
<?php 
echo "Hello, World!";
?>

Code Syntax

Let's break down the syntax of this program in detail:

<?php and ?>: These indicate the start and end of PHP code. All PHP instructions must be placed between these tags. This defines that the text within these tags will be interpreted as PHP code;
echo: This is a PHP language construct used to output data. In our case, we use echo to display the string "Hello, World!";
"Hello, World!": This is the text we are echoing with echo. In PHP, strings can be specified in either single or double quotes. It's important that the closing quote matches the opening one;
The semicolon (;) is used to terminate statements. This is necessary so that the PHP interpreter knows where one command ends and the next begins. Without the semicolon, PHP wouldn't be able to correctly parse the code, leading to syntax errors.

Task

Swipe to show code editor

Your challenge is to output "Hello, Codefinity!" in the console.

_{Once you've completed this task, click the button below the code to check your solution.}

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Let's begin with a classic programming example — "Hello World". This program serves as the first step for many in programming, demonstrating the basic principles of the language.

main


              123
            
<?php 
echo "Hello, World!";
?>

Code Syntax

Let's break down the syntax of this program in detail:

<?php and ?>: These indicate the start and end of PHP code. All PHP instructions must be placed between these tags. This defines that the text within these tags will be interpreted as PHP code;
echo: This is a PHP language construct used to output data. In our case, we use echo to display the string "Hello, World!";
"Hello, World!": This is the text we are echoing with echo. In PHP, strings can be specified in either single or double quotes. It's important that the closing quote matches the opening one;
The semicolon (;) is used to terminate statements. This is necessary so that the PHP interpreter knows where one command ends and the next begins. Without the semicolon, PHP wouldn't be able to correctly parse the code, leading to syntax errors.

Task

Swipe to show code editor

Your challenge is to output "Hello, Codefinity!" in the console.

_{Once you've completed this task, click the button below the code to check your solution.}

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Section 1. Chapter 2

Switch to desktop for real-world practiceContinue from where you are using one of the options below