Calculate the sum of values in an array

How to calculate the sum of values in an array in PHP?

We can calculate the sum of array elements using the PHP predefined array_sum() function. This function takes the array name as its value and returns the sum of all the elements present within that particular array.

Example: PHP array_sum() function

In the given example, we have calculated the sum of all the array elements of the given array named $arr using the PHP predefined array_sum() function.

Sum of all the array elements is: 203

Apart from using a predefined PHP function, we can also calculate the sum of all the elements of an array using for loop.

Example: Using for loop

In the given example, we have calculated the sum of all the array elements of the given array $arr using for loop.

      print("Sum of all the elements is: " . $total); ?>  

Sum of all the array elements is: 203

Conclusion

In this lesson, we have learned how to calculate the sum of all the array elements in PHP. We discussed two methods. At first, we have calculated the sum of all the array elements using the array_sum() function, and second we used the for loop for calculating the sum of all the elements of an array.

Источник

array_sum

array_sum() returns the sum of values in an array.

Parameters

Return Values

Returns the sum of values as an integer or float; 0 if the array is empty.

Examples

Example #1 array_sum() examples

$a = array( 2 , 4 , 6 , 8 );
echo «sum(a) color: #007700″>. array_sum ( $a ) . «\n» ;

$b = array( «a» => 1.2 , «b» => 2.3 , «c» => 3.4 );
echo «sum(b) color: #007700″>. array_sum ( $b ) . «\n» ;
?>

The above example will output:

User Contributed Notes 6 notes

If you want to calculate the sum in multi-dimensional arrays:

function array_multisum (array $arr ): float $sum = array_sum ( $arr );
foreach( $arr as $child ) $sum += is_array ( $child ) ? array_multisum ( $child ) : 0 ;
>
return $sum ;
>
?>

Example:

echo array_multisum ( $data );

Notably the function converts strings to float and ignores strings if they are not convertable:

$a = array( «String» , 2 , 4 , 6 , 8 );
echo «sum(a) keyword»>. array_sum ( $a ) . «\n» ;

$b = array( «12.3456» , 2 , 4 , 6 , 8 );
echo «sum(b) keyword»>. array_sum ( $b ) . «\n» ;
?>

sum(a) = 20
sum(b) = 32.3456

If you have a case where your array has int in strings, it sums them up as if there were only int in the array!
function sum_mix($a)
return array_sum($a);
>
var_dump(sum_mix([9, 3, ‘7’, ‘3’]));
Response will be int(22)

array_sum() doesn’t «ignore strings if they are not convertible», it converts them to zero. array_product() does the same thing, where the difference between «ignoring» and «converting to zero» is much more obvious.

//you can also sum multidimentional arrays like this;

function arraymultisum (array $arr ) $sum = null ;

foreach( $arr as $child ) $sum += is_array ( $child ) ? arraymultisum ( $child ): $child ;
>
return $sum ;
>

echo arraymultisum (array( 1 , 4 , 5 ,[ 1 , 5 , 8 ,[ 4 , 5 , 7 ]]));

array_sum converts strings to integer and array_sum(2,’2′) returns 4.

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  Источник

  array_sum() function in PHP

  The array_sum() function returns the sum of the values in an array. The returned value can be integer or float. It returns 0 if the array is empty.

  Syntax

  Parameters

  Return

  The array_sum() function returns the sum of values. The returned value can be integer or float. It returns 0 if the array is empty.

  Example

  The following is an example −

  Output

  The following is the output −

  Example

  Let us see another example −

  29.8,"b"=>66.4); echo array_sum($arr); ?>

  Output

  The following is the output −

  

  I love programming (: That’s all I know

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  Источник

  PHP array_sum() Function

  Return the sum of all the values in the array (5+15+25):

  Definition and Usage

  The array_sum() function returns the sum of all the values in the array.

  Syntax

  Parameter Values

  Technical Details

  Return Value:	Returns the sum of all the values in an array
  PHP Version:	4.0.4+
  PHP Changelog:	PHP versions prior to 4.2.1 modified the passed array itself and converted strings to numbers (which often converted them to zero, depending on their value)

  More Examples

  Example

  Return the sum of all the values in the array (52.2+13.7+0.9):

  

  COLOR PICKER

  

  

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  Источник

  PHP array_sum() Function

  The array_sum() function is “used to calculate the sum of all the values in an array(one-dimensional and associative).” It returns 0 if the array is empty. The returned sum may be an integer or float.

  Syntax

  Parameters

  $array: It is an array whose sum needs to be calculated.

  Return value

  It returns the sum obtained after adding all the elements together.

  Example 1: How to Use array_sum() function in PHP

   $arr = [19, 21, 46]; echo array_sum($arr);

  

  Example 2: Using array_sum() function to calculate the average

  If you want to find an AVERAGE of the values in your array, use the sum and count the functions together. For example, let’s say your array is $arr, and you want the average.

   $arr = [19, 21, 46]; $average = array_sum($arr) / count($arr); echo $average; 

  

  So, we can calculate the sum of values in an array using the array_sum() function.

  Example 3: Passing an empty array

  

  Example 4: Integers and String Values in array_sum()

  If you pass the array containing both the strings and integers, the array_sum() Function returns a sum of integers. The strings are considered as 0.

   $arr = ['krunal', 21, 'ankit', 19]; echo array_sum($arr); 

  Источник