File Read-Write

Thanks to all that responded to my previous question. I was so excited to have the answer, I neglected to thank everyone. Anyway, here's another newbie question that I didn't see anywhere. Does PHP intelligently handle file read-write issues? Say for instance, I open a file for writing and shortly thereafter another PHP session wants to read from it. What happens? Does PHP allow you to read from the file that's currently being written to? If not, does it wait, or does it just post an error? Thanks in advance! _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.