WordPress at a glance
function is not described

SplFixedArray::__wakeup() public WP 1.0

Do nothing.

{} It's a method of the class: SplFixedArray{}

No Hooks.

Return

null. Null. Nothing.

Usage

$SplFixedArray = new SplFixedArray();
$SplFixedArray->__wakeup();

Code of SplFixedArray::__wakeup() WP 5.7

<?php
public function __wakeup()
{
    // NOP
}