How to sum array numbers in PHP

How to sum the number of arrays in PHP

In PHP, we often deal with arrays, and sometimes we need to sum the number of elements in the array Perform a summation operation. This article will introduce how to sum the number of arrays in PHP. The following code examples will be shown in detail.

First, we need to create a multidimensional array containing multiple arrays as sample data. Suppose we have a multidimensional array containing multiple arrays as follows:

$data = array(
    array(1, 2, 3, 4),
    array(5, 6, 7),
    array(8, 9),
    array(10)
);

Next, we can use PHP's array_map function combined with the count function to count each sub-array To sum the numbers, the code is as follows:

$sum = array_sum(array_map('count', $data));
echo "数组个数的总和为：$sum";

In the above code, array_map('count', $data) will be applied to each sub-array in the multi-dimensional array $datacount function returns an array containing the number of each sub-array. Then use the array_sum function to sum these numbers, and finally get the sum of the array numbers.

Through the above code example, we successfully demonstrated how to sum the number of arrays in PHP. You can modify the sample data or code to suit different situations based on your actual needs. Hope this article is helpful to you.

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