What is the function for summing php arrays?

php array sum function is "array_sum()"; this function can calculate the sum of all elements in a one-dimensional array and return the sum of the elements, the syntax is "array_sum($array)". Returns an integer value if all elements in "$array" are integers, or a floating-point number if one or more of the values ​​are floating-point numbers. If there are non-numeric elements in "$array", PHP will convert them into a numeric value. If the conversion fails, they will be used as a 0 value to participate in the calculation.

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

The function of php array summation is "array_sum()".

php array array_sum() function

array_sum() function can calculate the sum of all elements in the array and return the sum of the elements and.

<?php
header("Content-type:text/html;charset=utf-8");
$array= array(1,2,3,4,5,6,7,8,9,10);
var_dump($array);
echo &#39;数组所有元素之和：&#39;. array_sum($array);
?>

Description:

• If all elements in $array are integers, return an integer Values; if one or more of the values ​​is a floating-point number, a floating-point number is returned.

• If there are non-numeric type elements in $array, then PHP will convert them into a numeric value (PHP is a weak language type and will be based on the value of the variable. , automatically convert the variable to the correct data type), if the conversion fails, it will be used as the 0 value to participate in the calculation.

<?php
header("Content-type:text/html;charset=utf-8");
$array= array("10.1xy", 100, &#39;1&#39;, "0.01");
var_dump($array);
echo &#39;数组所有元素之和：&#39;. array_sum($array);
?>

Output:

Note: The array_sum() function can only handle one-dimensional arrays

If you want to calculate the sum of elements of a two-dimensional array, you also need to use the foreach statement

• Use the foreach statement to loop through the outer array elements of the two-dimensional array

• In the loop body, use the is_array() function to determine whether the outer element is an array type, and use the "=" operator to sum it up

<?php  
header("content-type:text/html;charset=utf-8");
$arr = array(1,2,3,array(4,5,6),7,8,array(9,10)); 
var_dump($arr);
$sum=0;
foreach($arr as $v){
	if(is_array($v)){
		$sum+=array_sum($v);
	}else{
		$sum+=$v;
	}
}
echo "二维数组的和为：".$sum;
?>

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