MongoCursor::info
(PECL mongo >=1.0.5)
MongoCursor::info — Gets information about the cursor's creation and iteration
说明
public MongoCursor::info
( void
) : array
This can be called before or after the cursor has started iterating.
参数
此函数没有参数。
返回值
Returns the namespace, batch size, limit, skip, flags, query, and projected fields for this cursor. If the cursor has started iterating, additional information about iteration and the connection will be included.
更新日志
| 版本 | 说明 |
|---|---|
| 1.1.0 |
Added a number of other fields, including id (the
cursor id), at (the driver's counter of which
document is current), numReturned (the number
returned by the server in the current batch), and
server (which server the query was sent
to—useful in conjunction with
读取首选项.
|
| 1.0.10 |
Added started_iterating field, a boolean indicating
if cursor is pre- or post-query.
|
范例
Example #1 MongoCursor::info() example
<?php
$m = new MongoClient();
$cursor = $m->test->foo->find(array("x" => 4), array("y" => 0));
echo "Before iteration started:\n";
var_dump($cursor->info());
echo "\nAfter iteration started:\n";
$cursor->rewind();
var_dump($cursor->info());
?>
以上例程的输出类似于：
Before iteration started:
array(8) {
["ns"]=>
string(8) "test.foo"
["limit"]=>
int(0)
["batchSize"]=>
int(0)
["skip"]=>
int(0)
["flags"]=>
int(0)
["query"]=>
array(1) {
["x"]=>
int(4)
}
["fields"]=>
array(1) {
["y"]=>
int(0)
}
["started_iterating"]=>
bool(false)
}
After iteration started:
array(15) {
["ns"]=>
string(8) "test.foo"
["limit"]=>
int(0)
["batchSize"]=>
int(0)
["skip"]=>
int(0)
["flags"]=>
int(0)
["query"]=>
array(1) {
["x"]=>
int(4)
}
["fields"]=>
array(1) {
["y"]=>
int(0)
}
["started_iterating"]=>
bool(true)
["id"]=>
int(0)
["at"]=>
int(0)
["numReturned"]=>
int(1)
["server"]=>
string(25) "localhost:27017;-;.;26450"
["host"]=>
string(9) "localhost"
["port"]=>
int(27017)
["connection_type_desc"]=>
string(10) "STANDALONE"
}
参见
- MongoCursorInterface::info() - Gets information about the cursor's creation and iteration
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