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(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)
}
}
}