str_shuffle

(PHP 4 >= 4.3.0, PHP 5)

str_shuffleReordena aleatoriamente una cadena

Descripción

string str_shuffle ( string $str )

str_shuffle() baraja una cadena. Es creada una permutación de todas las posibles.

Parámetros

str

La cadena de entrada.

Valores devueltos

Devuelve la cadena barajada.

Ejemplos

Ejemplo #1 Ejemplo de str_shuffle()

<?php
$cadena 
'abcdef';
$desordenada str_shuffle($cadena);

// Esto imprime algo como: bfdaec
echo $desordenada;
?>

Ver también

add a note add a note

User Contributed Notes 7 notes

up
7
qeremy [atta] gmail [dotta] com
2 years ago
A proper unicode string shuffle;

<?php
function str_shuffle_unicode($str) {
   
$tmp = preg_split("//u", $str, -1, PREG_SPLIT_NO_EMPTY);
   
shuffle($tmp);
    return
join("", $tmp);
}
?>

$str = "Şeker yârim"; // My sweet love

echo str_shuffle($str); // i�eymrŢekr �

echo str_shuffle_unicode($str); // Şr mreyeikâ
up
5
jojersztajner at OXYGEN dot POLAND
7 years ago
Aoccdrnig to rseearch at an Elingsh uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoatnt tihng is that the frist and lsat ltteer is at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit a porbelm. Tihs is bcuseae we do not raed ervey lteter by it slef but the wrod as a wlohe.

Hree's a cdoe taht slerbmcas txet in tihs way:
<?php
   
function scramble_word($word) {
        if (
strlen($word) < 2)
            return
$word;
        else
            return
$word{0} . str_shuffle(substr($word, 1, -1)) . $word{strlen($word) - 1};
    }

    echo
preg_replace('/(\w+)/e', 'scramble_word("\1")', 'A quick brown fox jumped over the lazy dog.');
?>

It may be ufseul if you wnat to cetare an aessblicce CTCPAHA.
up
3
dzafel at op dot pl
7 years ago
Very, very simple random password generator, without using rand() function:

<?php
function random_password($chars = 8) {
  
$letters = 'abcefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
   return
substr(str_shuffle($letters), 0, $chars);
}
?>
up
2
CygnusX1
7 years ago
To cobine functionality and simplicity of the two functions below we can have:

<?php
function generatePasswd($numAlpha=6,$numNonAlpha=2)
{
  
$listAlpha = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
  
$listNonAlpha = ',;:!?.$/*-+&@_+;./*&?$-!,';
   return
str_shuffle(
     
substr(str_shuffle($listAlpha),0,$numAlpha) .
     
substr(str_shuffle($listNonAlpha),0,$numNonAlpha)
    );
}
?>
up
1
Anonymous
4 years ago
Shuffle for all encoding formats

<?php

function unicode_shuffle($string, $chars, $format = 'UTF-8')
{
    for(
$i=0; $i<$chars; $i++)
       
$rands[$i] = rand(0, mb_strlen($string, $format));
           
       
$s = NULL;
           
    foreach(
$rands as $r)
       
$s.= mb_substr($string, $r, 1, $format);
           
    return
$s;
}

?>
up
1
Michiel van den boogaard
9 years ago
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); 

?>
up
0
Anonymous
1 month ago
str_shuffle isn't recommendable for passwords. Each character exists only one time).

A function like the following one is better for this.

<?php
   
function generatePassword($length = 8) {
       
$possibleChars = "abcdefghijklmnopqrstuvwxyz";
       
$password = '';

        for(
$i = 0; $i < $length; $i++) {
           
$rand = rand(0, strlen($possibleChars) - 1);
           
$password .= substr($possibleChars, $rand, 1);
        }

        return
$password;
    }
?>
To Top