How to find the average of an array in php

The method for averaging an array in php is: 1. Create a PHP sample file and define an array containing numbers; 2. Use the `array_sum()` function to get the sum of all elements in the array; 3. Use the `count()` function to calculate the number of array elements; 4. Divide the sum of the array by the number of array elements.

Operating system for this tutorial: Windows 10 system, php8.1.3 version, Dell G3 computer.

In PHP, if you want to calculate the average of an array, you need to follow the following steps:

1. Use the `array_sum()` function to get all the elements in the array Sum.

2. Use the `count()` function to calculate the number of array elements.

3. Divide the array sum by the number of array elements to get the average.

The following is a sample code:

<?php
//定义一个数组
$array = array(1,2,3,4,5);
//通过array_sum()函数求和
$sum = array_sum($array);
//通过count()函数获取数组元素的个数
$count = count($array);
//根据公式计算平均值
$average = $sum / $count;
//输出结果
echo "数组的平均数为: " . $average;
?>

The output result of the above code is:

数组的平均数为: 3

Note: The above code only applies to numeric arrays. For other types of arrays, such as string arrays, data type conversion needs to be performed first.

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