PHP uses for loop to find the average of an array

In PHP, finding the average of an array can be calculated using a loop. Let's briefly introduce how to use a for loop to find the average of an array.

First, we need to prepare an array containing multiple values:

$numbers = array(98, 87, 76, 65, 54, 43, 32, 21, 10);

Next, we need to use a for loop to traverse the array and calculate the sum of all elements:

$total = 0;

for($i = 0; $i < count($numbers); $i++) {
  $total += $numbers[$i];
}

In this loop, we define a variable $total, whose initial value is 0. The loop starts executing from 0, and each loop accumulates the elements at the corresponding positions in the array into the $total variable, thereby calculating the sum of all elements.

Once we have calculated the sum of all elements, we can use the length of the array to calculate the average of the array. Specifically, we can calculate it as follows:

$average = $total / count($numbers);

In this code, we use the count function to get the number of elements in the array, and then divide $total by this number to get the average value.

The complete code is as follows:

$numbers = array(98, 87, 76, 65, 54, 43, 32, 21, 10);

$total = 0;

for($i = 0; $i < count($numbers); $i++) {
  $total += $numbers[$i];
}

$average = $total / count($numbers);

echo "数组的平均值是：" . $average;

In this example, we iterate through all the elements in the array and calculate their sum. We then use the number of elements in the array to calculate the average and print the result to the screen.

In general, the method of using a for loop to calculate the average of an array is very simple. In actual development, we can adjust the code as needed to adapt to different scenarios and needs.

The above is the detailed content of PHP uses for loop to find the average of an array. For more information, please follow other related articles on the PHP Chinese website!