How to find the average of an array in php

Steps to calculate the average value of php array: 1. Use array_sum() to calculate the sum of all elements in the array, the syntax is "array_sum($arr)"; 2. Use count() to get the number of elements in the array , syntax "count($arr)"; 3. Use the "elements and/number of elements" statement to calculate the array average.

The operating environment of this tutorial: windows7 system, PHP8.1 version, DELL G3 computer

php array averaging Value method

Implementation idea:

• Calculate the sum of all elements in the array

• Get The number of elements in the array, that is, the length of the array

• Divide the sum of elements by the length of the array to calculate the average

Implementation steps ：

• Use array_sum() to calculate the sum

• Use count() to calculate the number of elements

• Use the "/" operator to find the average, the syntax is "elements and/number of elements"

Implementation example:

<?php 
header("content-type:text/html;charset=utf-8");
$arr=array(1,2,3,4,5,6,7,8,9,10);
var_dump($arr);
$sum=array_sum($arr);
echo "数组元素和：".$sum."<br>";
$len=count($arr);
echo "数组长度：".$len."<br>";
$average=$sum/$len;
echo "数组平均值：".$average."<br>";
?>

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