Document update modifiers: Array manipulation
%*$push*%/%*$pushAll*% (adds elements to an array)
%*$addToSet*% (like %$push%, but without duplicates in the array)
%*$pop*% (removes the first or last element of an array)
%*$pull*%/%*$pullAll*% (removes elements from an array)
demo->circus; $c->remove();
$c->insert( [ '_id' => 'circ5', 'name' => 'Funny Led' ] );
$c->update(
[ '_id' => 'circ5' ],
[ '$push' => [ 'elephpants' => [ 'name' => 'Bobo', 'year' => 2012 ] ] ]
);
var_dump( $c->findOne( [ 'name' => 'Funny Led' ], [ 'elephpants' => 1 ] ) );
?>]]>