php calculate sum of all values ​​in multidimensional array

php built-in function array_sum() function returns the sum of all values ​​in the array, and can only return the sum of one-dimensional arrays;

To calculate the sum of all values ​​in a multi-dimensional array, a custom function is required;

<span>1</span><span>function</span> get_sum(<span>$array</span><span>) {
</span><span>2</span><span>$num</span> = 0<span>;
</span><span>3</span><span>foreach</span>(<span>$array</span><span>as</span><span>$k</span> => <span>$v</span><span>) {
</span><span>4</span><span>if</span>(<span>is_array</span>(<span>$v</span><span>)) {
</span><span>5</span><span>$num</span> += get_sum(<span>$v</span><span>);
</span><span>6</span><span>        }
</span><span>7</span><span>    }
</span><span>8</span><span>return</span><span>$num</span> + <span>array_sum</span>(<span>$array</span><span>);
</span><span>9</span> }<br><span>10</span> get_sum($array);

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The above introduces PHP to calculate the sum of all values ​​in a multi-dimensional array, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.