Contenuti del Corso

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

Boolean

The boolean data type (bool) is used to represent logical values. A boolean variable can only have two possible values: true or false. Booleans are fundamental for decision-making and conditional operations within PHP programs.

main.php


              1234
            
<?php
$isActive = true;
$isLogged = false;
?>

Outputting Boolean Values

You can output boolean values (true or false) using the echo function. When you use echo with true, PHP automatically outputs "1", as true converts to this string:

main.php


              1234
            
<?php
$isLoggedIn = true;
echo $isLoggedIn; // Outputs "1"
?>

When you use echo with false, nothing is output, as false converts to an empty string:

main.php


              1234
            
<?php
$isLoggedIn = false;
echo $isLoggedIn; // Does not output anything
?>

This approach allows for convenient output of boolean values without manually converting them to strings.

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Grazie per i tuoi commenti!

Sezione 2. Capitolo 4

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Contenuti del Corso

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

Boolean

main.php


              1234
            
<?php
$isActive = true;
$isLogged = false;
?>

Outputting Boolean Values

You can output boolean values (true or false) using the echo function. When you use echo with true, PHP automatically outputs "1", as true converts to this string:

main.php


              1234
            
<?php
$isLoggedIn = true;
echo $isLoggedIn; // Outputs "1"
?>

When you use echo with false, nothing is output, as false converts to an empty string:

main.php


              1234
            
<?php
$isLoggedIn = false;
echo $isLoggedIn; // Does not output anything
?>

This approach allows for convenient output of boolean values without manually converting them to strings.

Tutto è chiaro?

Grazie per i tuoi commenti!

Sezione 2. Capitolo 4