What will be the value of the variable?

Question

PHP

Good afternoon again!

$x = 9;
      $y = $x;
      $x = 5;

At the output I get that x = 5, y = 9 The question
is, why not x = 5, y = 5, because we pass a reference to the storage address of x

Answer 1

No no. This is a value assignment.
To assign a link, you need to write $y = &$x;

Answer 2

In php, variables of a simple type are passed by value, the prefix & is used to pass a reference to a variable, starting from php5 objects are passed by reference, before that objects were also passed by value (cloned), now there is a separate clone() function for cloning an object;