What is the purpose of the php array_sum function?

The array_sum() function in PHP is very convenient and can be used to quickly calculate the sum of all numerical elements in an array. Here is a more detailed explanation:

1. Functionality: array_sum() is used for adding up the numerical elements in an array.
2. Parameter: only one parameter is needed, which is an array to calculate the sum.
3. Return value: The function returns the calculated sum value.
4. 注意：

   array_sum() 可以应用在只包含数字值的数组上。如果数组中存在非数字元素（如字符串或布尔值），它们会被视为 0 进行计算。如果数组为空，则返回值为 0。

5. $array = [1, 2, 3, 4, 5];
   $total = the sum of all values in the array;
   echo $total; // Output: 15 (1 + 2 + 3 + 4 + 5)

By using the array_sum() function, you can avoid manually writing a loop to calculate the sum of elements in an array, making the code simpler and more efficient.