Sabre\VObject\UUIDUtil Class Reference

UUID Utility. More...

Collaboration diagram for Sabre\VObject\UUIDUtil:

Static Public Member Functions
static	getUUID ()
	Returns a pseudo-random v4 UUID. More...
static	validateUUID ($uuid)
	Checks if a string is a valid UUID. More...

Detailed Description

UUID Utility.

This class has static methods to generate and validate UUID's. UUIDs are used a decent amount within various *DAV standards, so it made sense to include it.

Copyright

Copyright (C) fruux GmbH (https://fruux.com/)

Author

Evert Pot (http://evertpot.com/) @license http://sabre.io/license/ Modified BSD License

Definition at line 16 of file UUIDUtil.php.

Member Function Documentation

getUUID()

static Sabre\VObject\UUIDUtil::getUUID ( )

static

Returns a pseudo-random v4 UUID.

This function is based on a comment by Andrew Moore on php.net

See also

http://www.php.net/manual/en/function.uniqid.php#94959

Returns

string

Definition at line 27 of file UUIDUtil.php.

                              {
 
        return sprintf(
 
            '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',
 
            // 32 bits for "time_low"
            mt_rand(0, 0xffff), mt_rand(0, 0xffff),
 
            // 16 bits for "time_mid"
            mt_rand(0, 0xffff),
 
            // 16 bits for "time_hi_and_version",
            // four most significant bits holds version number 4
            mt_rand(0, 0x0fff) | 0x4000,
 
            // 16 bits, 8 bits for "clk_seq_hi_res",
            // 8 bits for "clk_seq_low",
            // two most significant bits holds zero and one for variant DCE1.1
            mt_rand(0, 0x3fff) | 0x8000,
 
            // 48 bits for "node"
            mt_rand(0, 0xffff), mt_rand(0, 0xffff), mt_rand(0, 0xffff)
        );
    }

Referenced by Sabre\VObject\Component\VCard\getDefaults(), Sabre\VObject\Component\VEvent\getDefaults(), Sabre\VObject\Component\VJournal\getDefaults(), Sabre\VObject\Component\VTodo\getDefaults(), Sabre\VObject\UUIDUtilTest\testGetUUID(), and Sabre\VObject\Component\VCard\validate().

Here is the caller graph for this function:

validateUUID()

static Sabre\VObject\UUIDUtil::validateUUID (   $uuid )

static

Checks if a string is a valid UUID.

Parameters

string

$uuid

Returns

bool

Definition at line 60 of file UUIDUtil.php.

                                        {
 
        return preg_match(
            '/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$/i',
            $uuid
        ) !== 0;
 
    }

Referenced by Sabre\VObject\UUIDUtilTest\testGetUUID(), and Sabre\VObject\UUIDUtilTest\testValidateUUID().

Here is the caller graph for this function:

---

The documentation for this class was generated from the following file:

• libs/composer/vendor/sabre/vobject/lib/UUIDUtil.php