(PECL mongo >=1.5.0)
MongoCommandCursor::info — Gets information about the cursor's creation and iteration
This can be called before or after the cursor has started iterating.
此函数没有参数。
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.
Example #1 MongoCommandCursor::info() example
<?php
$m = new MongoClient();
$cursor = new MongoCommandCursor(
$m, // MongoClient object
'demo.cities', // namespace
[
'aggregate' => 'cities',
'pipeline' => [ [ '$match' => [ '_id' => [ '$exists' => true ] ] ] ],
'cursor' => [ 'batchSize' => 1 ],
]
);
echo "Before iteration started:\n";
var_dump($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(11) "demo.cities"
["limit"]=>
int(0)
["batchSize"]=>
int(0)
["skip"]=>
int(0)
["flags"]=>
int(0)
["query"]=>
array(3) {
["aggregate"]=>
string(6) "cities"
["pipeline"]=>
array(1) {
[0]=>
array(1) {
["$match"]=>
array(1) {
["_id"]=>
array(1) {
["$exists"]=>
bool(true)
}
}
}
}
["cursor"]=>
array(1) {
["batchSize"]=>
int(1)
}
}
["fields"]=>
NULL
["started_iterating"]=>
bool(false)
}
After iteration started:
array(17) {
["ns"]=>
string(11) "demo.cities"
["limit"]=>
int(0)
["batchSize"]=>
int(0)
["skip"]=>
int(0)
["flags"]=>
int(0)
["query"]=>
array(3) {
["aggregate"]=>
string(6) "cities"
["pipeline"]=>
array(1) {
[0]=>
array(1) {
["$match"]=>
array(1) {
["_id"]=>
array(1) {
["$exists"]=>
bool(true)
}
}
}
}
["cursor"]=>
array(1) {
["batchSize"]=>
int(1)
}
}
["fields"]=>
NULL
["started_iterating"]=>
bool(true)
["id"]=>
int(185840310129)
["at"]=>
int(0)
["numReturned"]=>
int(0)
["server"]=>
string(25) "localhost:27017;-;.;23991"
["host"]=>
string(9) "localhost"
["port"]=>
int(27017)
["connection_type_desc"]=>
string(10) "STANDALONE"
["firstBatchAt"]=>
int(0)
["firstBatchNumReturned"]=>
int(1)
}