[PHP-DB] Reg Exp to change c:\dir\dir\pic.jpg to dir/pic.jpg - to upload image path

[ioannes]

I am trying to upload images - in fact an image path - from a PC.

I use the <input > tag:

<INPUT NAME="addpic" TYPE="file">

which nicely gives an input textfield and Browse button!  This gives me, in the 
input box, eg:

c:\pics\subdir\pic1.jpg

The relative path on the server is something like: 

subdir/pics1.jpg

thus I need to transform the string:

c:\subdir\pics\pics1.jpg

into: 

pics/pics1.jpg


I can use str_replace() to change "\" into "/".  I am looking for an expression 
from some clever person to get rid of "c:\subdir\" given that I don't know the 
exact 'subdir' or name of the image.

Regards,

John