# The MongoDB\BSON\Regex class

(mongodb >=1.0.0)

## Introduction

BSON type for a regular expression pattern and optional » flags.

> Note: This BSON type is mainly used when querying the database. Alternatively, the » $regex query operator may be used.

## Class synopsis

final class MongoDB\BSON\Regex implements MongoDB\BSON\RegexInterface, MongoDB\BSON\Type, JsonSerializable, Stringable {
/* Methods */
final public __construct(string `$pattern`, string `$flags` = "")
final public getFlags(): string
final public getPattern(): string
final public jsonSerialize(): mixed
final public __toString(): string
}

## Changelog

Version | Description
--- | ---
PECL mongodb 2.0.0 | This class no longer implements the Serializable interface.
PECL mongodb 1.12.0 | Implements Stringable for PHP 8.0+.
PECL mongodb 1.3.0 | Implements MongoDB\BSON\RegexInterface.
PECL mongodb 1.2.0 | Implements Serializable and JsonSerializable.

## Table of Contents

- MongoDB\BSON\Regex::__construct — Construct a new Regex
- MongoDB\BSON\Regex::getFlags — Returns the Regex's flags
- MongoDB\BSON\Regex::getPattern — Returns the Regex's pattern
- MongoDB\BSON\Regex::jsonSerialize — Returns a representation that can be converted to JSON
- MongoDB\BSON\Regex::__toString — Returns the string representation of this Regex

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