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DocumentationHSL (Experimental)ReferenceFunctionHH\Lib\OS\lseek

HH\Lib\OS\lseek

Requires the Hack Standard Library - Experimental Additions to be installed.

Reposition the current file offset

namespace HH\Lib\OS;

function lseek(
  FileDescriptor $fd,
  int $offset,
  SeekWhence $whence,
): int;

See man 2 lseek for details. On error, an ErrnoException will be thrown.

Parameters

  • FileDescriptor $fd
  • int $offset
  • SeekWhence $whence

Returns

  • int