Calculate the sum of all elements in an array using PHP's array_sum() function

Use PHP's array_sum() function to calculate the sum of all elements in an array

PHP provides powerful array processing functions, in which the array_sum() function can calculate an array The sum of all elements in . In this article, we will explain how to use the array_sum() function in detail and provide some related code examples.

First of all, we need to explain the basic syntax of the array_sum() function:

array_sum(array $array): float|int

The array_sum() function accepts an array as a parameter and returns the sum of all elements in the array. The return value can be a floating point number or an integer, depending on the data type of the array elements.

Now let us look at a simple example to understand the use of array_sum() function. Suppose we have an array containing some integers and we want to calculate the sum of these integers.

$numbers = array(4, 2, 8, 6, 5);

$total = array_sum($numbers);

echo "数组中所有元素的总和为：" . $total;

The output result is:

数组中所有元素的总和为：25

As you can see, the array_sum() function is very simple and easy to use. We just need to pass the array to be summed as a parameter to the array_sum() function. The function iterates through the array and adds all elements, then returns the sum.

In addition to integers, the array_sum() function can also handle floating point numbers. Let's look at an example of an array containing floating point numbers.

$prices = array(0.99, 1.25, 2.50, 1.75, 4.99);

$total = array_sum($prices);

echo "数组中所有元素的总和为：" . $total;

The output result is:

数组中所有元素的总和为：11.48

As mentioned before, the return value of the array_sum() function can be a floating point number or an integer, depending on the data type of the array elements.

In addition, the array_sum() function can also be used to calculate the sum of values ​​in an associative array. Let's see an example to understand how to handle associative arrays.

$scores = array(
    "John" => 75,
    "Jane" => 90,
    "Mike" => 80,
    "Lisa" => 95
);

$total = array_sum($scores);

echo "关联数组中所有值的总和为：" . $total;

The output is:

关联数组中所有值的总和为：340

As shown in the above example, the array_sum() function can process the values ​​in an associative array and return their sum.

To summarize, you can easily calculate the sum of all elements in an array using PHP's array_sum() function. The array_sum() function works correctly regardless of whether the array contains integers, floating point numbers, or an associative array. Pass the array as a parameter to the array_sum() function and get the return value. In addition, the array_sum() function can also handle multi-dimensional arrays, but it requires more processing steps.

I hope this article will help you understand the use of the array_sum() function and can be applied in actual programming.

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