PHPerKaigi 2024

Random\Randomizer::getBytes

(PHP 8 >= 8.2.0)

Random\Randomizer::getBytesGet random bytes

说明

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.

参数

length

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

返回值

A string containing the requested number of random bytes.

错误/异常

示例

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

参见

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