(PECL mongo >=0.9.0)
MongoCollection::count — Counts the number of documents in this collection
Only count documents matching this query.
Only count documents with these fields.
Returns the number of documents.
Example #1 MongoCollection::count() example
<?php
$collection->insert(array('x'=>1));
$collection->insert(array('x'=>2));
$collection->insert(array('x'=>3, 'y'=>1));
var_dump($collection->count());
var_dump($collection->count(array('x'=>1)));
var_dump($collection->count(array(), array('z'=>1)));
?>
위 예제의 출력 예시:
float(3) float(1) float(0)