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PHP calculates the sum of all values in a multidimensional array, multidimensional array_PHP tutorial
- WBOYOriginal
- 2016-07-13 09:50:281160browse
php calculates the sum of all values in a multi-dimensional array, multi-dimensional 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, you need to customize a function;
<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);
<span> </span>
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