( resource handle )
Sets the file position indicator for handle
to the beginning of the file stream.
Returns TRUE on success or FALSE on failure.
The file pointer must be valid, and must point to a file
successfully opened by fopen().
If you have opened the file in append ("a" or "a+") mode, any data you write
to the file will always be appended, regardless of the file position.
See also fseek() and