ifxus_tell_slob
    (PHP 3>= 3.0.4, PHP 4 )
ifxus_tell_slob -- Returns the current file or seek position
Description
int 
ifxus_tell_slob ( long bid)
     Returns the current file or seek position of an open slob object      bid should be an existing slob id.  Return      FALSE on error otherwise the seek position.