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PHP Build a Simple PHP Application Working With Functions Introducing User-Defined Functions

Linda Woo
Linda Woo
2,018 Points
Posted by Linda Woo
Linda Woo
2,018 Points

A hint?

Am I going to create a function within a function? One function will allow me to cycle through the array - something like the mimic_count function in the video because I can't just assume the array will have three integers like the palindromic_primes array in the challenge. Then will I use this function to cycle through each number in the arrays? I will add $array[$count] + $array[... hmmm actually that won't work. As you can see, I am having a problem with this challenge.

Linda Woo
Linda Woo
2,018 Points
Linda Woo
Linda Woo
2,018 Points

Here's where I landed, and I know it's wrong....any hints? 

<?php 
function mimic_array_sum($array) {
  $count = 0;
    $sum = $num[$count];
  foreach ($array as $num); {
    $count = $count + 1;
    return $count;
    $sum = $sum + $num[$count];
  }
    return $sum; 
}

$palindromic_primes = array(11, 757, 16361);
function mimic_array_sum($palindromic_primes);
?>

1 Answer

Jeff Busch
Jeff Busch
19,287 Points

Hi Linda,

With php's foreach loop you don't need a "count" variable. The foreach loop knows how many items are in the array. You're over-complicating things. Study the code below.

Jeff

<?php

function mimic_array_sum($array) {

  $sum = 0;

  foreach ($array as $num); {
    $sum = $sum + $num;
  }
    return $sum; 
}

$palindromic_primes = array(11, 757, 16361);

$total = mimic_array_sum($palindromic_primes);

echo $total;

?>
Linda Woo
Linda Woo
2,018 Points
Linda Woo
Linda Woo
2,018 Points

Thank you, thank you!