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<?php
declare(strict_types=1);
namespace Improved;
/**
* Reduce all elements to a single value using a callback.
*
* @param iterable $iterable
* @param callable $callback
* @param mixed $initial
* @return mixed
*/
function iterable_reduce(iterable $iterable, callable $callback, $initial = null)
{
$result = $initial;
foreach ($iterable as $key => $value) {
$result = call_user_func($callback, $result, $value, $key);
}
return $result;
jasny /
improved-php-iterable
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