Random\Randomizer::shuffleBytes

(PHP 8 >= 8.2.0)

Random\Randomizer::shuffleBytes — Get a byte-wise permutation of a string

Descrição

public Random\Randomizer::shuffleBytes(string $bytes): string

Returns a uniformly selected permutation of the input bytes.

Each possible permutation of the input bytes is equally likely to be returned.

Parâmetros

bytes

The string whose bytes are shuffled.

The input string will not be modified.

Valor Retornado

A permutation of the bytes of bytes.

Erros/Exceções

Exemplos

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

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

// Shuffle bytes in a string:
echo "«", $r->shuffleBytes("PHP is great!"), "»\n";
?>

O exemplo acima produzirá algo semelhante a:

« ga rHs!PPiet»

Example #2 Byte-wise shuffling breaks Unicode characters

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

$unicode = "🍎, 🥝, 🍌, 🍑, 🍇";
$shuffled = $r->shuffleBytes( $unicode );

// Byte-wise shuffling of non-ASCII characters destroys them,
// resulting in invalid sequences (indicated by the Unicode
// replacement character) or even entirely different characters
// appearing in the output.
echo "Original: ", $unicode, "\n";
echo "Shuffled: «", $shuffled, "»\n";
echo "Shuffled Bytes: ", bin2hex($shuffled), "\n";
?>

O exemplo acima produzirá algo semelhante a:

Original: 🍎, 🥝, 🍌, 🍑, 🍇
Shuffled: «� ��,�����🍟,� �� �, �,��»
Shuffled Bytes: 87208e912c8d9fa5f0f0f09f8d9f2cf09f208c9d20f02c209f2c8d8d