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PHP str_shuffle

PHP original manual for str_shuffle [ show | php.net ]

str_shuffle

(PHP 4 >= 4.3.0, PHP 5, PHP 7)

str_shuffle — Randomly shuffles a string

Description

string str_shuffle ( string $str )

str_shuffle() shuffles a string. One permutation of all possible is created.

Caution

This function does not generate cryptographically secure values, and should not be used for cryptographic purposes. If you need a cryptographically secure value, consider using random_int(), random_bytes(), or openssl_random_pseudo_bytes() instead.

Parameters

str

The input string.

Return Values

Returns the shuffled string.

Changelog

Version Description
7.1.0 The internal randomization algorithm has been changed to use the » Mersenne Twister Random Number Generator instead of the libc rand function.

Examples

Example #1 str_shuffle() example

<?php
$str = 'abcdef';
$shuffled = str_shuffle($str);

// This will echo something like: bfdaec
echo $shuffled;
?>

See Also