Rand Class Reference

Pseudorandom number generator (PRNG) More...

Static Public Member Functions
static	getBytes ($length)
	Generate random bytes using different approaches If PHP 7 is running we use the random_bytes() function.
static	getBoolean ()
	Generate random boolean.
static	getInteger ($min, $max)
	Generate a random integer between $min and $max.
static	getFloat ()
	Generate random float (0..1) This function generates floats with platform-dependent precision.
static	getString ($length, $charlist=null)
	Generate a random string of specified length.

Static Protected Attributes
static	$generator = null

Detailed Description

Pseudorandom number generator (PRNG)

Member Function Documentation

static getBoolean ( )

static

Generate random boolean.

Returns

bool

static getBytes (   $length )

static

Generate random bytes using different approaches If PHP 7 is running we use the random_bytes() function.

Parameters

int

$length

Returns

string

Exceptions

Exception\RuntimeException

static getFloat ( )

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.

Returns

float

static getInteger (   $min,   $max  )

static

Generate a random integer between $min and $max.

Parameters

int	$min
int	$max

Returns

int

Exceptions

Exception\DomainException

static getString (   $length,   $charlist = null  )

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

Returns

string

Exceptions

Exception\DomainException

Member Data Documentation

$generator = null

staticprotected