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PHP Build a Simple PHP Application Working With Functions Introducing Functions

Posted by Zeljko Lazic
Zeljko Lazic
1,980 Points

<?php $numbers = array(1,5,8); echo "Sum is :" . array_sum($numbers); ?>

how is this not correct?

sum.php 
<?php

$numbers = array(1,5,8);

echo "Sum is :" . array_sum($numbers);

?>

3 Answers

elk6
elk6
22,916 Points
elk6
elk6
22,916 Points

Your answer is right, but you need to store the outcome into a variable and echo the variable. Like this. 

<?php

$numbers = array(1,5,8);

$sum = array_sum($numbers);

echo $sum;

?>
Zeljko Lazic
Zeljko Lazic
1,980 Points
Zeljko Lazic
Zeljko Lazic
1,980 Points

so it need to be a variable...tnx

Cristian Altin
Cristian Altin
12,165 Points
Cristian Altin
Cristian Altin
12,165 Points

It works fine the way you wrote it, here's the code in the PHP command line interface:

php > $num = array(1,5,8);
php > echo "Sum is :" . array_sum($num);
Sum is :14

I guess you needed to add a variable because of some requirements by the exercise or workings behind the scenes of the answer checker.