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lcg_value

(PHP 4, PHP 5, PHP 7, PHP 8)

lcg_value — Combined linear congruential generator

Avviso

This function has been DEPRECATED as of PHP 8.4.0. Relying on this function is highly discouraged.

Descrizione

#[\Deprecated]
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.

Attenzione

Questa funzione non genera valori crittograficamente sicuri, e non dovrebbe essere usata per scopi di crittografia. Se c'è necessità di utilizzare un valore crittograficamente sicuro, si preferisca openssl_random_pseudo_bytes().

Attenzione

Scaling the return value to a different interval using multiplication or addition (a so-called affine transformation) might result in a bias in the resulting value as floats are not equally dense across the number line. As not all values can be exactly represented by a float, the result of the affine transformation might also result in values outside of the requested interval.

Use Random\Randomizer::getFloat() to generate a random float within an arbitrary interval. Use Random\Randomizer::getInt() to generate a random integer within an arbitrary interval.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

A pseudo random float value between 0.0 and 1.0, inclusive.

Log delle modifiche

Versione Descrizione
8.4.0 This function has been deprecated.

Vedere anche: