Update wordpress-coding-standards/php.md

Co-authored-by: Juliette <663378+jrfnl@users.noreply.github.com>

Author: dingo-d

wordpress-coding-standards/php.md

@@ -569,7 +569,7 @@ switch ( $foo ) {
 
 The `goto` statement must never be used.
 
-The `eval()` construct is _very dangerous_ and is impossible to secure. Additionally, the `create_function()` function, which internally performs an `eval()`, is deprecated in PHP 7.2. Neither of these must be used.
+The `eval()` construct is _very dangerous_ and is impossible to secure. Additionally, the `create_function()` function, which internally performs an `eval()`, is deprecated since PHP 7.2 and has been removed in PHP 8.0. Neither of these must be used.
 
 ## Error Control Operator `@`