Php/docs/function.lcg-value
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lcg_value
(PHP 4, PHP 5, PHP 7)
lcg_value — Combined linear congruential generator
Description
lcg_value ( ) : float
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 between 0.0 and 1.0, inclusive.
