eio_readdir
(PECL eio >= 0.0.1dev)
eio_readdir — Reads through a whole directory
Descrierea
$path
, int $flags
, int $pri
, callable $callback
[, string $data = NULL
] )
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.
Parametri
-
path -
Directory path.
-
flags -
Combination of EIO_READDIR_* constants.
-
pri -
Prioritatea cererii:
EIO_PRI_DEFAULT,EIO_PRI_MIN,EIO_PRI_MAXsauNULL. Dacă este transmisNULL,prieste stabilit intern la valoareaEIO_PRI_DEFAULT. -
callback -
Funcția
callbackeste apelată atunci când o interpelare este încheiată. Ea trebuie să corespundă următorului prototip:void callback(mixed $data, int $result[, resource $req]);-
data -
sunt niște date personalizate transmise în cerere.
-
result -
conține rezultatul specific cererii; în esență, valoarea întoarsă de apelul de sistem corespunzător.
-
req -
este o resursă a cererii opțională ce poate fi utilizată cu funcții precum eio_get_last_error()
-
-
data -
Arbitrary variable passed to
callback.
Valorile întoarse
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
Exemple
Example #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();
?>
Exemplul de mai sus va afișa ceva similar cu:
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)
}
}
}
