Could eval() error crash other scripts?

[coderpunk]

The system has multiple virtuals on it, one of them has some broken
code that is being run through eval() at a fairly regular rate, the
logs show a PHP Parse Error in the eval()'d code.

A different piece of PHP code, which works fine on other machines
without the eval() error, appears to be dropping dead for no reason.
Nothing in the logs, same code works fine on other machines.

The only difference I can see between machines that work and the one
that doesn't is that the broken one has the frequent PHP parse Error
eval() error.

Is it possible that the broken eval() code, or its error could be
causing the other PHP code to crash unexpectedly?

Thanks,

..cp