convert 1/0 values to YES/NO in php - php

Question

I have a few variables namely $tv, $car, $refrigerator, $laptop and $desktop which take values 0/1 to indicate presence or absence YES/NO.
Is there an easy way to convert these from 1/0 to YES/NO?
Something which makes the below easier
<?php
$tv = 1;
$car = 0;
$refrigerator = 1;
$laptop = 1;
$desktop = 0;
if($tv == 1)
$tv = "YES";
else
$tv = "NO";
print($tv);
if($car == 1)
$car = "YES";
else
$car= "NO";
print($car);
//Repeat so on for refrigerator, laptop , desktop
?>

Answer 1

You can write a function so you don't repeat your code over and over.
function yesNo(&$value){
$value = $value == true ? 'Yes' : 'No';
}
yesNo($car);
yesNo($tv);

Answer 2

For learning propose it seems a little to complicated to me to use a function with references. So I decided to write this little example as near as possible on the given code and without references, but return values and without typecasts.
1 and 0 are integers and not boolean variables. So we will use === comparison operator to avoid type juggling:
<?php
/**
* Convert number to 1 to'YES' or everything else to 'NO'.
* #param $n the number to convert.
* #return string YES|NO
*/
function numberToString($n)
{
return $n === 1 ? 'YES' : 'NO';
}
$tv = 1;
$car = 0;
$refrigerator = 1;
$laptop = 1;
$desktop = 0;
// Call numberToString function for $tv and print return value
print(numberToString($tv));
// Call numberToString function for $car and print return value
print(numberToString($car));
// Call numberToString function for $refrigerator and print return value
print(numberToString($refrigerator));
// Call numberToString function for $laptop and print return value
print(numberToString($laptop));
// Call numberToString function for $desktop and print return value
print(numberToString($desktop));
?>
And if you feel lucky you can also use array with foreach:
<?php
/**
* Convert number to 1 to'YES' or everything else to 'NO'.
* #param $n the number to convert.
* #return string YES|NO
*/
function numberToString($n)
{
return $n === 1 ? 'YES' : 'NO';
}
// For php >= 5.4 you can also use the new array syntax:
// $devices = [
// 'tv' => 1,
// 'car' => 0,
// 'refrigerator' => 1,
// 'laptop' => 1,
// 'desktop' => 0,
// ];
$devices = array(
'tv' => 1,
'car' => 0,
'refrigerator' => 1,
'laptop' => 1,
'desktop' => 0,
);
foreach ($devices as $device) {
// Call numberToString function for $tv and print return value
print(numberToString($device));
}
?>
Happy coding.

Answer 3

skroczek's method worked for me in an array, but I had to update to the following for it to work:
function numberToString($n)
{
return $n == 1 ? 'YES' : 'NO';
}

Answer 4

for those who see this post recently
filter_var function does this with ease
var_dump(filter_var('oops', FILTER_VALIDATE_BOOLEAN)); // bool(false)
var_dump(filter_var('no', FILTER_VALIDATE_BOOLEAN)); // bool(false)
var_dump(filter_var('yes', FILTER_VALIDATE_BOOLEAN)); // bool(true)
var_dump(filter_var('1', FILTER_VALIDATE_BOOLEAN)); //bool(true)
var_dump(filter_var('0', FILTER_VALIDATE_BOOLEAN)); //bool(false)
var_dump(filter_var('2', FILTER_VALIDATE_BOOLEAN)); //bool(false)