PHP: str_shuffle

Description

string str_shuffle ( string str )

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

Example 1. str_shuffle() example

<?php $str = 'abcdef'; $shuffled = str_shuffle($str); // This will echo something like: bfdaec echo $shuffled; ?>

See also shuffle() and rand().

User Contributed Notes
str_shuffle

Michiel van den boogaard
17-Jan-2005 04:03


Shortend function for PHP < 4.3

<?php  

function RandomPass($numchar)  

{  

    $word = "a,b,c,d,e,f,g,h,i,j,k,l,m,1,2,3,4,5,6,7,8,9,0";  

    $array=explode(",",$word);  

    shuffle($array);  

    $newstring = implode($array,"");  

    return substr($newstring, 0, $numchar);  

}  

?>

aidan at php dot net
26-Aug-2004 05:31


This functionality is now implemented in the PEAR package PHP_Compat.



More information about using this function without upgrading your version of PHP can be found on the below link:



http://pear.php.net/package/PHP_Compat

sfalcon_(at)_pymesweb_(dot)_com
26-Aug-2004 10:28


You can use str_shuffle to make simple and nice random passwords:



function random_passwd($numchar) {

      $string =str_shuffle("abcefghijklmnopqrstuvwxyz1234567890");

      $password = substr($string,1,$numchar);



      return($password);

}



echo random_passwd('8') // Will return something like "xa3dh214" =)

floweb at yahoo dot com
16-Sep-2003 12:09


this is basically the equivelent to the str_shuffle they use 



function str_shuffle($word){

    for($i=0;$i<strlen($word);$i++)

        $array[]=$word[$i];

    

    shuffle($array);

    for($i=0;$i<count($array);$i++)

        $newstring .= $array[$i];

        

    return $newstring;

}



sidenote: wrote this when me and a friend were writing some code and i realized i was using 4.3.0 and he was using 4.2.0 needless to say my code took less lines :)