(PHP 4, PHP 5, PHP 7)
Seeks on a file pointer
int fseek ( resource $handle, int $offset [, int $whence = SEEK_SET ] )
Sets the file position indicator for the file referenced by handle. The new position, measured in bytes from the beginning of the file, is obtained by adding offset to the position specified by whence.
In general, it is allowed to seek past the end-of-file; if data is then written, reads in any unwritten r