Random\Randomizer::getBytes

(PHP 8 >= 8.2.0)

Random\Randomizer::getBytes — Get random bytes

Descrizione

public Random\Randomizer::getBytes(int $length): string

Generates a string containing uniformly selected random bytes with the requested length.

As the returned bytes are selected completely randomly, the resulting string is likely to contain unprintable characters or invalid UTF-8 sequences. It may be necessary to encode it before transmission or display.

Elenco dei parametri

length: The length of the random string that should be returned in bytes; must be 1 or greater.

Valori restituiti

A string containing the requested number of random bytes.

Errori/Eccezioni

If the value of length is less than 1, a ValueError will be thrown.
Any Throwables thrown by the Random\Engine::generate() method of the underlying Random\Randomizer::$engine.

Esempi

Example #1 Random\Randomizer::getBytes() example

<?php
$r = new \Random\Randomizer();

echo bin2hex($r->getBytes(8)), "\n";
?>

Il precedente esempio visualizzerà qualcosa simile a:

ebdbe93cd56682c2

Vedere anche:

random_bytes() - Get cryptographically secure random bytes
bin2hex() - Converte i dati binari nella rappresentazione esadecimale
base64_encode() - Encodes data with MIME base64
Random\Randomizer::getBytesFromString() - Get random bytes from a source string

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