str_shuffle string function to shuffle a chars of a string

Shuffle characters when unpredictability is not required

str_shuffle() returns a random permutation of the bytes in a string. It is useful for demonstrations and non-security shuffling, but it must not be used to create passwords, tokens or other values that need to be unpredictable.

$text = 'abcdef';
echo str_shuffle($text);

For secrets or tokens, use random_bytes(), random_int(), or the secure Random API instead.

$string="abcdefghijk";
echo str_shuffle($string);

The output is here , you can change this by refreshing this page

hkgabdfjeci

Legacy password-style shuffle example

This older example demonstrates string shuffling only. Do not use str_shuffle() to generate passwords, reset tokens or security secrets.

This example combines different types of characters and then shuffles them. We used substr string function to get short string by taking out first 8 chars of the string only.
Here is the code


$string1="abcdefghijklmnopqrstuvwxyz";
$string2="1234567890";
$string3="!@#$%^&*()_+";
$string=$string1.$string2.$string3;
$string= str_shuffle($string);
echo substr($string,0,8);

this produces an 8-character shuffled string for demonstration only; do not use it as a password or security token.

erxczv67

In above case we have used three stings and added them before shuffling to generate password string. You can add more strings like all uppercase alphabets etc to generate desired password. We can take user inputs also to use the combination of strings to generate random password.

Example: Shuffling UTF-8 Strings

$str = "こんにちは";
$arr = mb_str_split($str);
shuffle($arr);
echo implode('', $arr);  // Output: Randomized Japanese characters

Example: Shuffling letters and numbers for a non-security demo

$password = str_shuffle('abcdefghijklmnpqrstuvwxyz1234567890');
echo substr($password, 0, 8);  // Output: Random 8-character string

String Functions password_verify(): To match the password with user entered password

Subhendu Mohapatra

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I write and maintain practical tutorials on Python, PHP, SQL, JavaScript, HTML, jQuery, and web development at plus2net. The tutorials focus on clear explanations, working examples, and code that readers can test and adapt while learning.

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suchira	17-06-2015
hey.this site is best.good job friend and wish you all the best carryon..

str_shuffle(): shuffle a string

Shuffle characters when unpredictability is not required

Legacy password-style shuffle example

Example: Shuffling UTF-8 Strings

Example: Shuffling letters and numbers for a non-security demo

Subhendu Mohapatra