array_walk_recursive php function

Published: 12 December 2022
on channel: PHPeasy

array_walk_recursive — Apply a user function recursively to every member of an array
Description
array_walk_recursive(array|object &$array, callable $callback, mixed $arg = null): bool

Applies the user-defined callback function to each element of the array. This function will recurse into deeper arrays.
Parameters

array

The input array.
callback

Typically, callback takes on two parameters. The array parameter's value being the first, and the key/index second.

Note:

If callback needs to be working with the actual values of the array, specify the first parameter of callback as a reference. Then, any changes made to those elements will be made in the original array itself.

arg

If the optional arg parameter is supplied, it will be passed as the third parameter to the callback.

Return Values

Returns true on success or false on failure.
https://www.php.net/manual/en/functio...

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