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
9
1
2
3
4
<?php
$isActive = true;
$isLogged = false;
?>
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
9
1
2
3
4
<?php
$isLoggedIn = true;
echo $isLoggedIn; // Outputs "1"
?>
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
9
1
2
3
4
<?php
$isLoggedIn = false;
echo $isLoggedIn; // Does not output anything
?>
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.
Alt var klart?
Takk for tilbakemeldingene dine!
Seksjon 2. Kapittel 4
Spør AI
Spør om hva du vil, eller prøv ett av de foreslåtte spørsmålene for å starte chatten vår
