In order to do more interesting things with queries, let's add multiple
simple documents to the collection. These documents will just be of the form
array( "i" => value );
and we
can do this fairly efficiently in a loop:
<?php
$connection = new MongoClient();
$collection = $connection->database->collectionName;
for ( $i = 0; $i < 100; $i++ )
{
$collection->insert( array( 'i' => $i, "field{$i}" => $i * 2 ) );
}
?>
Notice that we can insert arrays with different keys into the same
collection. This aspect is what we mean when we say that MongoDB is
"schema-free". In the example above each document has an
i
field, but also a field name in the form of
field
+ $i
.