PHP: Size in memory of associative array and variables?

Question

PHP

There was a conversation about global variables and the question of writing such variables in memory actually ripened.
Suppose we have an associative array:

$aAssoc = array(
 "test" => 1,
 "test1" => "2",
 "test2" => "OK",
);

And variables:

$test = 1;
$test1 = "2";
$test3 = "OK";

Which form of recording will require more memory to work with?
Now I'm not talking about the convenience of work, not about the expediency of using such a number of variables, but about the technical one - memory consumption and speed.
And in addition: what if they are global? Will the consumption or speed of work change? How strong?

Answer 1

In short, the array will take more. The globality of variables does not affect memory consumption and performance.

Answer 2

Read here habrahabr.ru/post/134784

Answer 3

how arrays are arranged in php

Answer 4

Here is a direct link to a short and precise answer to your question: nikic.github.io/2011/12/12/How-big-are-PHP-arrays-...