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PHP Build a Basic PHP Website (2018) Listing and Sorting Inventory Items Introducing Functions

Posted by ryota kurazono
ryota kurazono
Courses Plus Student 4,248 Points

I got stuck.

I don't know what to do. The error massage is "You need to pass the $numbers variable as an argument to array_sum()." I hope anyone help me.

index.php 
<?php

$numbers = array(1,5,8);
/*
$sum = 0;
foreach($numbers as $number) {
    $sum = $sum + $number;
}

echo $sum;
*/
function array_sum(){
    $sum = 0;
    $sum = $numbers[0] + $numbers[1] + $numbers[2] ;

    return $sum;
}

array_sum();

?>
Ashish Mehra
Ashish Mehra
3,407 Points

Steps

Remove foreach loop

$numbers = array(1,5,8);
$sum = 0;

    $sum = array_sum($number);


echo $sum;

2 Answers

Algirdas Lalys
Algirdas Lalys
9,389 Points
Algirdas Lalys
Algirdas Lalys
9,389 Points

Hi ryota kurazono, The code below creates an array of numbers, loops through them one at a time, and sums their values. PHP actually has a native function that does this same thing: array_sum(). Some of PHP functions are internal like var_dump(), array_sum(), and there is plenty more. Array functions in PHP. So you just need to replace your foreach loop with this internal function.

$sum = array_sum($numbers);
Aananya Vyas
Aananya Vyas
20,157 Points
Aananya Vyas
Aananya Vyas
20,157 Points

this worked for me:

$numbers = array(1,5,8);
$sum = 0;
 $sum = array_sum($numbers);
echo $sum;