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

Matthew Smart
Matthew Smart
12,567 Points
Posted by Matthew Smart
Matthew Smart
12,567 Points

Help please

Write the code inside this mimic_array_sum() function. That code should add up all individual numbers in the array and return the sum. You’ll need to use a foreach command to loop through the argument array, a working variable to keep the running total, and a return command to send the sum back to the main code.

do not understand this, can someone provide the correct code, and i will be able to see what it is i was meant to do.

1 Answer

Aaron Graham
Aaron Graham
18,033 Points
Aaron Graham
Aaron Graham
18,033 Points

You are supposed to write a function that will sum all the elements in an array. For example:

$myArray = array(1, 2, 3);

mimic_array_sum($myArray);

would give you 6.

To make the mimic_array_sum function, you need to make a function that takes one argument, an array, adds up all the elements in the array, and return the sum.

You can do it like this:

function mimic_array_sum($array) {

  $sum = 0;

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

  return $sum;
};

The foreach will loop through the array that is passed into the function and add each element, one at a time, to the current sum. Once the foreach loop terminates, the sum is returned.