Fixed a bug with assignment introduced in 4afa0afe4396581f4950.
Fixed a bug with assignment introduced in 4afa0afe4396581f4950.

Refactoring the `eval()` statements to a separate function won't work as assignment in phpsh relies on `eval()` scoping variables inside `___Phpsh___::interactive_loop()`.

AsafMah/phpsh,terrorbox/phpsh,facebookarchive/phpsh,AsafMah/phpsh,facebookarchive/phpsh,rhee/phpsh,terrorbox/phpsh,rjmi004/phpsh,rjmi004/phpsh,chooaya/phpsh,chooaya/phpsh,rjmi004/phpsh,terrorbox/phpsh,chooaya/phpsh,rhee/phpsh,rhee/phpsh,AsafMah/phpsh