Description:
------------
Hi.
Trying to throw exception from __autoload() by evaluating code (eval()).

In earlier version of php5 that would give me exception that i need. Now it gives me fatal ignoring eval statement. 

Reproduce code:
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function __autoload_failed() {
    eval(
        'if (!class_exists("ClassNotFoundException", false)) { '
        .'final class ClassNotFoundException extends Exception {/*_*/} }'
        .'throw new ClassNotFoundException("'.$classname.': '.$message.'");'
    );
}

function __autoload($className) {
    // insert your logic here
    __autoload_failed($className, 'not found'); // in any place, actually
}

Expected result:
----------------
ClassNotFoundException thrown

Actual result:
--------------
Fatal error