Rand Class Reference

Pseudorandom number generator (PRNG) More...

Static Public Member Functions
static	getBytes ($length, $strong=false)
	Generate random bytes using OpenSSL or Mcrypt and mt_rand() as fallback.
static	getAlternativeGenerator ()
	Retrieve a fallback/alternative RNG generator.
static	getBoolean ($strong=false)
	Generate random boolean.
static	getInteger ($min, $max, $strong=false)
	Generate a random integer between $min and $max.
static	getFloat ($strong=false)
	Generate random float (0..1) This function generates floats with platform-dependent precision.
static	getString ($length, $charlist=null, $strong=false)
	Generate a random string of specified length.

Static Protected Attributes
static	$generator = null

Detailed Description

Pseudorandom number generator (PRNG)

Member Function Documentation

static getAlternativeGenerator ( )

static

Retrieve a fallback/alternative RNG generator.

Returns

RandomLib

static getBoolean (   $strong = false )

static

Generate random boolean.

Parameters

bool

$strong

true if you need a strong random generator (cryptography)

Returns

bool

static getBytes (   $length,   $strong = false  )

static

Generate random bytes using OpenSSL or Mcrypt and mt_rand() as fallback.

Parameters

int	$length
bool	$strong	true if you need a strong random generator (cryptography)

Returns

string

Exceptions

Exception\RuntimeException

static getFloat (   $strong = false )

static

Generate random float (0..1) This function generates floats with platform-dependent precision.

PHP uses double precision floating-point format (64-bit) which has 52-bits of significand precision. We gather 7 bytes of random data, and we fix the exponent to the bias (1023). In this way we generate a float of 1.mantissa.

Parameters

bool

$strong

true if you need a strong random generator (cryptography)

Returns

float

static getInteger (   $min,   $max,   $strong = false  )

static

Generate a random integer between $min and $max.

Parameters

int	$min
int	$max
bool	$strong	true if you need a strong random generator (cryptography)

Returns

int

Exceptions

Exception\DomainException

static getString (   $length,   $charlist = null,   $strong = false  )

static

Generate a random string of specified length.

Uses supplied character list for generating the new string. If no character list provided - uses Base 64 character set.

Parameters

int	$length
string | null	$charlist
bool	$strong	true if you need a strong random generator (cryptography)

Returns

string

Exceptions

Exception\DomainException

Member Data Documentation

$generator = null

staticprotected