PHP: array_reduce() function
PHP: Iteratively reduce the array to a single value using a callback function
The array_reduce() function is used to reduce the array to a single value by iteratively using a user-supplied function.
Version:
(PHP 4 and above)
Syntax:
array_reduce(input_array, user_defined_function, initial_value)
Parameters:
| Name | Description | Required / Optional |
Type |
|---|---|---|---|
| input_array | The input array. | Required | Array |
| user_defined_function | User-supplied function to accept values from the array. | Required | - |
| initial_value | Initial value to send to the function | Optional | Integer |
Return value:
The resulting value.
Value Type: Mixed*
*Mixed: Mixed indicates multiple (but not necessarily all) types.
Example:
<?php
function addv($a, $b)
{
$a += $b;
return $a;
}
$z = array(1, 2,3,4,5);
$x=array_reduce($z,"addv");
echo $x;
?>
Output:
15
Pictorial Presentation:
View the example in the browser
Practice here online :
See also
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Next: array_reverse