详解php7如何实现MongoDB模糊查询

db.collection.find({'_id': /^5101/})

db.letv_logs.find({"ctime":/uname?/i});

$query=array("name"=>new MongoRegex("/.*”.$name.".*/i"));
$db->find($query);

$query = new \MongoDB\Driver\Query('_id' => ['$regex' => '^5101']);
$this->getManager()->executeQuery($this->dbname . $this->collection, $query);

$filter = ['_id' => ['$in' => ['$regex' => '^5101']]];

PHP Fatal error: Uncaught MongoDB\Driver\Exception\ConnectionException: $in needs an array in filename

$filter = ['_id' => ['$in' => [['$regex' => '^5101']]];

PHP Fatal error: Uncaught MongoDB\Driver\Exception\ConnectionException: cannot nest $ under $in in filename

$filter = ['_id' => ['$in' => [new \MongoDB\BSON\Regex('^5101','i')]]];