.. index::

single: Polyfill

single: PHP

single: Components; Polyfill

The Symfony Polyfill / UUID Component

This component provides ``uuid_*`` functions to users who run PHP versions

without the UUID extension.

Installation

.. code-block:: terminal

.. include:: /components/require_autoload.rst.inc

Usage

Once this component is installed in your application, you can use the following

functions, no matter if the `PHP UUID extension`_ is installed or not in your

server.

Provided Constants

* ``UUID_VARIANT_NCS`` (value = 0)

* ``UUID_VARIANT_DCE`` (value = 1)

* ``UUID_VARIANT_MICROSOFT`` (value = 2)

* ``UUID_VARIANT_OTHER`` (value = 3)

* ``UUID_TYPE_DEFAULT`` (value = 0)

* ``UUID_TYPE_TIME`` (value = 1)

* ``UUID_TYPE_DCE`` (value = 4)

* ``UUID_TYPE_NAME`` (value = 1)

* ``UUID_TYPE_RANDOM`` (value = 4)

* ``UUID_TYPE_NULL`` (value = -1)

* ``UUID_TYPE_INVALID`` (value = -42)

Provided Functions

* :phpfunction:`uuid_create`

* :phpfunction:`uuid_is_valid`

* :phpfunction:`uuid_compare`

* :phpfunction:`uuid_is_null`

* :phpfunction:`uuid_type`

* :phpfunction:`uuid_variant`

* :phpfunction:`uuid_time`

* :phpfunction:`uuid_mac`

* :phpfunction:`uuid_parse`

* :phpfunction:`uuid_unparse`

.. _`PHP UUID extension`: https://pecl.php.net/package/uuid