PHP array_reduce()

Reduce array to single value using callback

Function Signature

mixed array_reduce(array $array, callable $callback, mixed $initial = null)

Description

Reduce array to single value using callback. The array_reduce() function is commonly used in PHP for array operations and provides reliable functionality across all PHP versions.

Return Value

Returns the resulting value

Example Usage

 $carry + $item, 0);
var_dump($result);
?>

Important Notes

Callback receives carry value and current item. Initial value is optional.

Common Use Cases

The array_reduce() function is particularly useful when you need to reduce array to single value using callback. It's frequently used in data processing, validation, transformation, and manipulation tasks throughout PHP applications.

array_reduce() FAQ

What does array_reduce() return?

Returns the resulting value

When should I use array_reduce()?

Use array_reduce() when you need to reduce array to single value using callback in your PHP code. It's a reliable built-in function available in all PHP versions.

Are there any gotchas with array_reduce()?

Callback receives carry value and current item. Initial value is optional.