find the average of all values in a map in php

In order to find the average of all values in a map in PHP, you can use the array_sum() function to sum all the values of the map, and then divide by the number of values using the count() function. Here's an example:

main.php
$map = array("a" => 10, "b" => 20, "c" => 30);
$sum = array_sum($map);
$count = count($map);
$average = $sum / $count;
echo "The average value is: " . $average;
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In the above example, we have a map with three key-value pairs. We calculate the sum of all the values using array_sum(), and count the number of values using count(). We then calculate the average by dividing the sum by the count, and finally, print the result using echo.