How to add and sum multiple arrays in php

php Multiple array accumulation and summing steps: 1. Define three test data arrays $a, $b, $c; 2. Create an empty array "$sum" and use "count()" The function gets the length of the array and uses a for loop to traverse each element in the array. In the loop, we add the elements at corresponding positions in the three arrays and store the result in the "$sum" array; 3. Call this function to test whether it can correctly add elements at corresponding positions in three arrays.

The operating environment of this article: Windows 10 system, php8.1.3 version, dell g3 computer.

In PHP programming, we often encounter situations where we need to accumulate and sum the corresponding elements in multiple arrays. For example, suppose we have three arrays $a, $b, and $c, each with the same number of elements. We want to add the elements at corresponding positions in these three arrays and return a new array. In this article, we will learn how to use PHP to achieve this functionality.

1. We need to define three test data arrays.

$a = array(1, 2, 3, 4, 5);
$b = array(6, 7, 8, 9, 10);
$c = array(11, 12, 13, 14, 15);

2. We will create a function to add the elements at corresponding positions in these three arrays.

function sumArrays($array1, $array2, $array3) {
$sum = array();
$length = count($array1);
for($i = 0; $i < $length; $i++) {
$sum[$i] = $array1[$i] + $array2[$i] + $array3[$i];
}
return $sum;
}

In the above code, we first create an empty array $sum to store the summation result. We then use the count() function to get the length of the array and use a for loop to iterate through each element in the array. In the loop, we add the elements at corresponding positions in the three arrays and store the result in the $sum array. Finally, we return the $sum array as the output of the function.

3. Call this function to test whether it can correctly add the elements at corresponding positions in the three arrays.

$result = sumArrays($a, $b, $c);
print_r($result);

When we run the above code, we will get the following output:

Array
(
[0] => 18
[1] => 21
[2] => 24
[3] => 27
[4] => 30
)

This is what we expected. The element at each position is the sum of the elements at the corresponding position in the original array.

In actual applications, there may be more arrays that need to be accumulated and summed. In this case, we only need to add the corresponding parameters to the function and perform the corresponding operations in the for loop.

Summary

By using the above code and ideas, we can easily implement the function of accumulating and summing the elements at corresponding positions of multiple arrays in PHP. Whether it is background development or data processing, this function is very useful and can be applied to various practical scenarios. I hope this article can help you better apply this technology in PHP programming!

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