[int$length = 0],
[int$offset = 0],
[int$pri = EIO_PRI_DEFAULT],
[callable$callback = NULL],
[mixed$data = NULL]
eio_write writes up to length bytes from str at offset offset from the beginning of the file.
Stream, Socket resource, or numeric file descriptor, e.g. returned by eio_open
Maximum number of bytes to write.
Offset from the beginning of file.
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 function is called when the request is done. It should match the following prototype:
void callback(mixed $data, int $result[, resource $req]);
is custom data passed to the request.
request-specific result value; basically, the value returned by corresponding system call.
is optional request resource which can be used with functions like eio_get_last_error
Arbitrary variable passed to callback.
eio_write returns request resource on success, or false on failure.