PHP sum of two two-dimensional arrays

In PHP development, it is often necessary to operate on arrays, and summation operations are also common. When we encounter two two-dimensional arrays that need to be summed, we can do it in the following ways.

Method 1: Use a loop to traverse each element and add and sum one by one.

The sample code is as follows:

Output result:

Array ( [0] => Array ( [0] => 8 [1] => 10 [2] => 12 ) [1] => Array ( [0] => 14 [1] => 16 [2] => 18 ) )

Method 2: Use the array_map() function to add and sum each element, which can reduce the amount of code .

The sample code is as follows:

Output result:

Array ( [0] => Array ( [0] => 8 [1] => 10 [2] => 12 ) [1] => Array ( [0] => 14 [1] => 16 [2] => 18 ) )

Method 3: Use the array_reduce() function to sum the two-dimensional array elements.

The sample code is as follows:

Output result:

Array ( [0] => 8 [1] => 10 [2] => 12 [3] => 14 [4] => 16 [5] => 18 )

The above three methods can be selected according to actual needs, and details such as formulas, functions, loops, etc. can be added as needed. Meet different computing needs.

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