# Method Stdio.File()->query_read_oob_callback()

Method query_read_oob_callback

  ``function`(`mixed`, `string`:`int`) query_read_callback()`
  ``function`(`mixed`:`int`) query_write_callback()`
  ``function`(`mixed`, `string`:`int`) query_read_oob_callback()`
  ``function`(`mixed`:`int`) query_write_oob_callback()`
  ``function`(`mixed`:`int`) query_close_callback()`
  ``array`(`function`(`mixed`, `void`|`string`:`int`)) query_callbacks()`

Description

  These functions return the currently installed callbacks for the respective events.

  query_callbacks returns the callbacks in the same order as set_callbacks and set_nonblocking expect them.

See also

  set_nonblocking(), set_read_callback, set_write_callback, set_read_oob_callback, set_write_oob_callback, set_close_callback, set_callbacks