(PHP 8 >= 8.2.0)
Random\Randomizer::getBytes — Get random bytes
$length): string
Generates a string containing uniformly selected random bytes with the requested length.
As the returned bytes are selected completely randomly, the resulting string is likely to contain unprintable characters or invalid UTF-8 sequences. It may be necessary to encode it before transmission or display.
length
The length of the random string that should be returned in bytes; must be 1 or greater.
A string containing the requested number of random bytes.
length is less than 1,
a ValueError will be thrown.
Random\Randomizer::$engine 的
Random\Engine::generate() 方法抛出的任何 Throwable。
示例 #1 Random\Randomizer::getBytes() example
<?php
$r = new \Random\Randomizer();
echo bin2hex($r->getBytes(8)), "\n";
?>以上示例的输出类似于：
ebdbe93cd56682c2