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

说锟斤拷

eio_seek ( mixed $fd , int $offset , int $whence [, int $pri = EIO_PRI_DEFAULT [, callable $callback = NULL [, mixed $data = NULL ]]] ) : resource

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 to offset bytes.
  • EIO_SEEK_CUR - Set position to current location plus offset.
  • EIO_SEEK_END - Set position to end-of-file plus offset.

锟斤拷锟斤拷

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

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callback

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void callback(mixed $data, int $result[, resource $req]);
data

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result

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req

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data

Arbitrary variable passed to callback.

锟斤拷锟斤拷值

eio_seek() returns request resource on success or FALSE on error.