php array sum formula

PHP is a very powerful programming language, and array is one of the very important data types. In PHP, we can use arrays to store and manipulate multiple values. Arrays can provide very convenient data operations and calculations. This article will introduce the formula for array summation in PHP.

The formula for array summation in PHP is very simple. It just uses the foreach statement to traverse the array and add the elements in the array in sequence. The specific code is as follows:

<?php
$array = array(1, 2, 3, 4, 5); // 定义数组
$sum = 0; // 定义求和变量为0
foreach ($array as $value) {
    $sum += $value; //将每个元素相加
}
echo $sum; // 输出结果15
?>

The above code first defines an array $array and a variable $sum, and then uses the foreach statement to traverse each element in the array and assign it to the $value variable. In the loop, we add each element to $sum and finally print the sum.

In addition to using foreach, we can also use the array_sum function to sum. The array_sum function adds all the numbers in the array and returns the sum. The code is as follows:

<?php
$array = array(1, 2, 3, 4, 5); // 定义数组
$sum = array_sum($array); // 计算数组元素的总和
echo $sum; // 输出结果15
?>

In the above code, we use the array_sum function to find the sum of the array elements, assign it to the $sum variable and output the result.

In the actual development process, we often need to process and calculate array elements. It is very convenient to sum the elements in an array using the array sum formula in PHP. Whether we use the foreach statement to traverse the array, or use the array_sum function, it can help us easily complete the array sum.

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