edictable behavior of the program
(corruption of memory and sometimes segmentation faults).<P>

PHP doesn't support weak references at all. Also it has no long (64-bit) integers.<P>

PHP 4.* doesn't provide any primitives for working in multithreaded environment. 
So locking mechanisms are not supported by PHP API.

<H3><A NAME= "Rebol">Rebol</A></H3>
Requirements/restrictions of Rebol DyBASE API:
<UL>

<LI>You will have to use professional version of Rebol, because free Command and View version do not 
sup