eio_seek
(PECL eio >= 0.5.0b)
eio_seek — Repositions the offset of the open file associated with the fd argument to the argument offset according to the directive whence
Description
resource eio_seek ( mixed $fd , int $offset , int $whence [, int $pri = EIO_PRI_DEFAULT [, callable $callback = NULL [, mixed $data = NULL ]]] ) eio_seek() repositions the offset of the open file associated with stream, Socket resource, or file descriptor specified by fd to the argument offset according to the directive whence as follows:
EIO_SEEK_SET- Set position equal tooffsetbytes.
EIO_SEEK_CUR- Set position to current location plusoffset.
EIO_SEEK_END- Set position to end-of-file plusoffset.
Parameters
fd
Stream, Socket resource, or numeric file descriptor
offset
Starting point from which data is to be read.
length
Number of bytes to be read.
pri
The request priority: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, or NULL. If NULL passed, pri internally is set to EIO_PRI_DEFAULT.
callback
callback function is called when the request is done. It should match the following prototype:
void callback(mixed $data, int $result[, resource $req]); data
is custom data passed to the request.
result
request-specific result value; basically, the value returned by corresponding system call.
req
is optional request resource which can be used with functions like eio_get_last_error()
`data` Arbitrary variable passed to callback.
Return Values
eio_seek() returns request resource on success or FALSE on error.
← eio_rmdir
eio_sendfile →
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