How to find the total average of three arrays in php

Implementation steps: 1. Use array_sum() and " " operator to obtain the total element sum of three arrays, the syntax is "array_sum(array 1) array_sum(array 2) array_sum(array 3)"; 2. Use the count() function and the " " operator to get the total number of elements of the three arrays, the syntax is "count(array1) count(array2) count(array3)"; 3. Use the "/" operator to get the total average Number, syntax "total elements and/total number of elements".

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

In php, you can use array_sum(), The count() function and the " " and "/" operators are used to find the total average of three arrays.

Implementation idea:

• First get the sum of the total elements of the three arrays

• and then get The total number of elements of the three arrays

• Finally, divide the sum of the total elements by the total number of elements to get the total average

Implementation steps:

Step 1: Use the array_sum() function and the " " operator to obtain the sum of the total elements of the three arrays

• Use the array_sum() function to find the sum of the elements of the three arrays respectively.

• Use " " to add the sum of the three elements to find the total sum of the elements.

元素总和：".(array_sum($arr1)+array_sum($arr2)+array_sum($arr3)); ?>

Step 2: Use the count() function and the " " operator to obtain the total number of elements of the three arrays

• Use the count() function to find the number of elements in the three arrays respectively

• Use " " to add the three element numbers Find the total number of elements

元素总个数：".(count($arr1)+count($arr2)+count($arr3)); ?>

Step 3: Use the "/" operator to get the total average

Use the "/" operator to divide the sum of the total elements by the total number of elements to obtain the total average. Syntax:

总元素和 / 总元素个数

Full sample code:

三个数组的总元素个数：".$len; $avg=$sum/$len; echo "
三个数组的总平均数：".$avg; ?>

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