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Introduction to PHP
course content

Course Content

Introduction to PHP

Introduction to PHP

1. First Acquaintance
Features of the PHP LanguageFirst ApplicationComments in PHPBasic Math OperationsMath Expressions
2. Variables and Data Types
Data Types VariablesStrings BooleanComparison Operations
3. Conditional Statements
If StatementElse StatementElse If StatementSwitch-Case Statement
4. Arrays
Creating ArraysIndexesAssociative ArraysAdding and Removing Elements in Arrays
5. Loops
Loops СonceptWhile-LoopsDo-WhileFor-LoopsIncrement and Decrement

book
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:

php

main

copy

              
12345678

            
<?php
$age = 17;
if ($age >= 18) {
    echo "You're an adult";
} else {
    echo "You're not an adult yet.";
}
?>

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
test

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

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Section 3. Chapter 2
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book
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:

php

main

copy

              
12345678

            
<?php
$age = 17;
if ($age >= 18) {
    echo "You're an adult";
} else {
    echo "You're not an adult yet.";
}
?>

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
test

Swipe to show code editor

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

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 2
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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