How to find the average of three arrays in php

In PHP, you can calculate the average of three arrays through array and loop methods. The following is the specific implementation:

First, define three arrays, assuming they are $arr1, $arr2 and $arr3. The code is as follows:

$arr1 = array(2, 3, 5 , 8, 9);
$arr2 = array(1, 4, 6, 7, 10);
$arr3 = array(2.5, 4.5, 6.5, 8.5, 10.5);

Next, merge the three arrays into a new array $arr, using the array_merge() function. The code is as follows:

$arr ​​= array_merge($arr1, $arr2, $arr3);

Then, use the count() function to get the length of the $arr array and store it in the variable $len. The code is as follows:

$len = count($arr);

Then, Use a for loop to traverse the array $arr and add elements to the variable $sum. The code is as follows:

$sum = 0;
for($i = 0; $i < $len; $i ){

$sum += $arr[$i];

}

Finally, divide the variable $sum by $len to get the average of the three arrays. The code is as follows:

$average = $ sum/$len;

The complete code is as follows:

$arr1 = array(2, 3, 5, 8, 9);
$arr2 = array(1, 4, 6 , 7, 10);
$arr3 = array(2.5, 4.5, 6.5, 8.5, 10.5);

$arr ​​= array_merge($arr1, $arr2, $arr3);

$len = count($arr);

$sum = 0;
for($i = 0; $i < $len; $i ){

$sum += $arr[$i];

}

$average = $sum/$len;

echo "The average of the three arrays is:" . $average;

The output of this code is : The average of the three arrays is: 5.8666666666667.

The above is a simple implementation method for calculating the average of three arrays. Depending on specific needs and actual conditions, more complex processing and boundary processing may be required.

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