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

Else Statement

An if can be followed by an optional else block. The else block will execute if the Boolean expression tested by the if block evaluates to false.

Let's consider a example:

main

In the example above, the age < 18, so the if code block hasn't been executed. The else code block executes when the if condition is false.

The else syntax is like the if syntax without a condition and parentheses ( ).

Task

Fill in the blanks in the code to check the identity of variables $var1 and $var2 using the if ... else construct.

Task

Fill in the blanks in the code to check the identity of variables $var1 and $var2 using the if ... else construct.

Everything was clear?

Section 3. Chapter 2

Else Statement

An if can be followed by an optional else block. The else block will execute if the Boolean expression tested by the if block evaluates to false.

Let's consider a example:

main

In the example above, the age < 18, so the if code block hasn't been executed. The else code block executes when the if condition is false.

The else syntax is like the if syntax without a condition and parentheses ( ).

Task

Fill in the blanks in the code to check the identity of variables $var1 and $var2 using the if ... else construct.

Task

Fill in the blanks in the code to check the identity of variables $var1 and $var2 using the if ... else construct.

Everything was clear?

Section 3. Chapter 2

Else Statement

An if can be followed by an optional else block. The else block will execute if the Boolean expression tested by the if block evaluates to false.

Let's consider a example:

main

In the example above, the age < 18, so the if code block hasn't been executed. The else code block executes when the if condition is false.

The else syntax is like the if syntax without a condition and parentheses ( ).

Task

Fill in the blanks in the code to check the identity of variables $var1 and $var2 using the if ... else construct.

Task

Fill in the blanks in the code to check the identity of variables $var1 and $var2 using the if ... else construct.

Everything was clear?

An if can be followed by an optional else block. The else block will execute if the Boolean expression tested by the if block evaluates to false.

Let's consider a example:

main

In the example above, the age < 18, so the if code block hasn't been executed. The else code block executes when the if condition is false.

The else syntax is like the if syntax without a condition and parentheses ( ).

Task

Fill in the blanks in the code to check the identity of variables $var1 and $var2 using the if ... else construct.

Section 3. Chapter 2

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