(PECL eio >= 0.0.1dev)
eio_readdir — Reads through a whole directory
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.
path
Directory path.
flags
Combination of EIO_READDIR_* constants.
pri
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
callback
function is called when the request is done.
It should match the following prototype:
void callback(mixed $data, int $result[, resource $req]);
data
is custom data passed to the request.
result
request-specific result value; basically, the value returned by corresponding system call.
req
is optional request resource which can be used with functions like eio_get_last_error().
data
Arbitrary variable passed to callback
.
eio_readdir() returns request resource on success, or false
on failure.
Sets result
argument of
callback
function according to
flags
:
EIO_READDIR_DENTS
(int)
'names'
- array of directory names
'dents'
- array of struct
eio_dirent
-like arrays having the following keys each:
'name'
- the directory name;
'type'
- one of EIO_DT_*
constants;
'inode'
- the inode number, if available, otherwise
unspecified;
EIO_READDIR_DIRS_FIRST
(int)
EIO_READDIR_STAT_ORDER
(int)
stat
'ing each one. When planning to
stat() all files in the given directory, the
returned order will likely be
fastest.
EIO_READDIR_FOUND_UNKNOWN
(int)
Node types:
EIO_DT_UNKNOWN
(int)
EIO_DT_FIFO
(int)
EIO_DT_CHR
(int)
EIO_DT_MPC
(int)
EIO_DT_DIR
(int)
EIO_DT_NAM
(int)
EIO_DT_BLK
(int)
EIO_DT_MPB
(int)
EIO_DT_REG
(int)
EIO_DT_NWK
(int)
EIO_DT_CMP
(int)
EIO_DT_LNK
(int)
EIO_DT_SOCK
(int)
EIO_DT_DOOR
(int)
EIO_DT_WHT
(int)
EIO_DT_MAX
(int)
Example #1 eio_readdir() example
<?php
/* Is called when eio_readdir() finishes */
function my_readdir_callback($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();
?>
The above example will output something similar to:
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) } } }