lcg_value

lcg_value

(PHP 4, PHP 5, PHP 7)

lcg_valueCombined linear congruential generator

Description

float lcg_value ( void )

lcg_value() returns a pseudo random number in the range of (0, 1). The function combines two CGs with periods of 2^31 - 85 and 2^31 - 249. The period of this function is equal to the product of both primes.

Caution

This function does not generate cryptographically secure values, and should not be used for cryptographic purposes. If you need a cryptographically secure value, consider using random_int(), random_bytes(), or openssl_random_pseudo_bytes() instead.

Return Values

A pseudo random float value in the range of (0, 1)

See Also

  • rand() - Generate a random integer
  • mt_rand() - Generate a random value via the Mersenne Twister Random Number Generator

© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.lcg-value.php

在线笔记
App下载
App下载

扫描二维码

下载编程狮App

公众号
微信公众号

编程狮公众号

意见反馈
返回顶部