eio_readdir

(PECL eio >= 0.0.1dev)

eio_readdirReads through a whole directory

Opis

eio_readdir ( string $path , int $flags , int $pri , callable $callback [, string $data = NULL ] ) : resource

Reads through a whole directory(via the opendir, readdir and closedir system calls) and returns either the names or an array in result argument of callback function, depending on the flags argument.

Parametry

path

Directory path.

flags

Combination of EIO_READDIR_* constants.

pri

Priorytet zapytania: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, lub NULL. Jeśli podana zostanie wartość NULL, parametr pri jest wewnętrznie ustawiany na EIO_PRI_DEFAULT.

callback

Funkcja callback jest wywoływana po zakończeniu wywołania. Powinna ona być zgodna z następującym prototypem:

void callback(mixed $dane, int $wynik[, resource $zapytanie]);
dane

dane przekazywane do zapytania.

wynik

wartość wynikowa, zależna od zapytania; ogólnie, jest to wartość zwracana przez odpowiednie wywołanie systemowe.

zapytanie

opcjonalny zasób zapytania, który może być użyty z funkcjami takimi jak eio_get_last_error()

data

Arbitrary variable passed to callback.

Zwracane wartości

eio_readdir() returns request resource on success, or FALSE on error. Sets result argument of callback function according to flags:

EIO_READDIR_DENTS (integer)
eio_readdir() flag. If specified, the result argument of the callback becomes an array with the following keys: 'names' - array of directory names 'dents' - array of struct eio_dirent-like arrays having the following keys each: 'name' - the directory name; 'type' - one of EIO_DT_* constants; 'inode' - the inode number, if available, otherwise unspecified;
EIO_READDIR_DIRS_FIRST (integer)
When this flag is specified, the names will be returned in an order where likely directories come first, in optimal stat order.
EIO_READDIR_STAT_ORDER (integer)
When this flag is specified, then the names will be returned in an order suitable for stat'ing each one. When planning to stat() all files in the given directory, the returned order will likely be fastest.
EIO_READDIR_FOUND_UNKNOWN (integer)

Node types:

EIO_DT_UNKNOWN (integer)
Unknown node type(very common). Further stat() needed.
EIO_DT_FIFO (integer)
FIFO node type
EIO_DT_CHR (integer)
Node type
EIO_DT_MPC (integer)
Multiplexed char device (v7+coherent) node type
EIO_DT_DIR (integer)
Directory node type
EIO_DT_NAM (integer)
Xenix special named file node type
EIO_DT_BLK (integer)
Node type
EIO_DT_MPB (integer)
Multiplexed block device (v7+coherent)
EIO_DT_REG (integer)
Node type
EIO_DT_NWK (integer)
EIO_DT_CMP (integer)
HP-UX network special node type
EIO_DT_LNK (integer)
Link node type
EIO_DT_SOCK (integer)
Socket node type
EIO_DT_DOOR (integer)
Solaris door node type
EIO_DT_WHT (integer)
Node type
EIO_DT_MAX (integer)
Highest node type value

Przykłady

Przykład #1 eio_readdir() example

<?php
/* Is called when eio_readdir() finishes */
function my_readdir_callback($data$result) {
    echo 
__FUNCTION__" called\n";
    echo 
"data: "var_dump($data);
    echo 
"result: "var_dump($result);
    echo 
"\n";
}

eio_readdir("/var/spool/news"EIO_READDIR_STAT_ORDER EIO_READDIR_DIRS_FIRST,
  
EIO_PRI_DEFAULT"my_readdir_callback");
eio_event_loop();
?>

Powyższy przykład wyświetli coś podobnego do:

my_readdir_callback called
data: NULL
result: array(2) {
 ["names"]=>
  array(7) {
   [0]=>
    string(7) "archive"
    [1]=>
    string(8) "articles"
    [2]=>
    string(8) "incoming"
    [3]=>
    string(7) "innfeed"
    [4]=>
    string(8) "outgoing"
    [5]=>
    string(8) "overview"
    [6]=>
    string(3) "tmp"
  }
 ["dents"]=>
  array(7) {
   [0]=>
    array(3)
    {
     ["name"]=>
      string(7)
      "archive"
      ["type"]=>
      int(4)
      ["inode"]=>
      int(393265)
    }
   [1]=>
    array(3)
    {
     ["name"]=>
      string(8)
      "articles"
      ["type"]=>
      int(4)
      ["inode"]=>
      int(393266)
    }
   [2]=>
    array(3)
    {
     ["name"]=>
      string(8)
      "incoming"
      ["type"]=>
      int(4)
      ["inode"]=>
      int(393267)
    }
   [3]=>
    array(3)
    {
     ["name"]=>
      string(7)
      "innfeed"
      ["type"]=>
      int(4)
      ["inode"]=>
      int(393269)
    }
   [4]=>
    array(3)
    {
     ["name"]=>
      string(8)
      "outgoing"
      ["type"]=>
      int(4)
      ["inode"]=>
      int(393270)
    }
   [5]=>
    array(3)
    {
     ["name"]=>
      string(8)
      "overview"
      ["type"]=>
      int(4)
      ["inode"]=>
      int(393271)
    }
   [6]=>
    array(3)
    {
     ["name"]=>
      string(3)
      "tmp"
      ["type"]=>
      int(4)
      ["inode"]=>
      int(393272)
    }
  }
}
add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top