Description:
------------
Looks like a regression in 8.0.0rc1

Was working in previous versions (7.2, 7.3, 7.4 and up to 8.0.0beta4)

https://3v4l.org/gWW0K



Test script:
---------------
<?php

eval("echo \"One\n\";\n");
eval("namespace Bar;\n\necho \"Two\n\";\n");
eval("?><?php\necho \"Three\n\";\n");
eval("?><?php\nnamespace Bar;\n\necho \"Four\n\";\n");



Expected result:
----------------
One
Two
Three
Four

Actual result:
--------------
One
Two
Three

Fatal error: Namespace declaration statement has to be the very first statement or after any declare call in the script in /in/gWW0K(6) : eval()'d code on line 2