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このドキュメントでは、 php中国語ネットマニュアル リリース
(PECL eio >= 0.0.1dev)
eio_readdir — Reads through a whole directory
$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.
path
Directory path.
flags
Combination of EIO_READDIR_* constants.
pri
请求的优先级: EIO_PRI_DEFAULT
, EIO_PRI_MIN
, EIO_PRI_MAX
或 NULL
。如果是
NULL
,pri
将设为
EIO_PRI_DEFAULT
。
callback
callback
函数在请求完成时被调用。其应匹配一下原型:
void callback(mixed $data, int $result[, resource $req]);
data
传递给请求的用户数据。
result
针对请求的结果的值。通常是相应的系统调用返回的值。
req
可选的请求资源,可被 eio_get_last_error() 之类的函数使用。
data
Arbitrary variable passed to callback
.
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_DIRS_FIRST
( integer )
EIO_READDIR_STAT_ORDER
( integer )
EIO_READDIR_FOUND_UNKNOWN
( integer )
Node types:
EIO_DT_UNKNOWN
( integer )
EIO_DT_FIFO
( integer )
EIO_DT_CHR
( integer )
EIO_DT_MPC
( integer )
EIO_DT_DIR
( integer )
EIO_DT_NAM
( integer )
EIO_DT_BLK
( integer )
EIO_DT_MPB
( integer )
EIO_DT_REG
( integer )
EIO_DT_NWK
( integer )
EIO_DT_CMP
( integer )
EIO_DT_LNK
( integer )
EIO_DT_SOCK
( integer )
EIO_DT_DOOR
( integer )
EIO_DT_WHT
( integer )
EIO_DT_MAX
( integer )
Example #1 eio_readdir() example
<?php
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 ();
?>
以上例程的输出类似于:
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) } } }