Human Readable Random String

/**************

*@length - length of random string (must be a multiple of 2)

**************/

function readable_random_string($length = 6){

    $conso=array("b","c","d","f","g","h","j","k","l",

    "m","n","p","r","s","t","v","w","x","y","z");

    $vocal=array("a","e","i","o","u");

    $password="";

    srand ((double)microtime()*1000000);

    $max = $length/2;

    for($i=1; $i<=$max; $i++)

    {

    $password.=$conso[rand(0,19)];

    $password.=$vocal[rand(0,4)];

    }

    return $password;

}

1. Human Readable Random String

This code will create a human readable string that will look more close to dictionary words, useful for captchas.

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1. /************** 
2. *@length - length of random string (must be a multiple of 2) 
3. **************/  
4. function readable_random_string($length = 6){  
5.     $conso=array("b","c","d","f","g","h","j","k","l",  
6.     "m","n","p","r","s","t","v","w","x","y","z");  
7.     $vocal=array("a","e","i","o","u");  
8.     $password="";  
9.     srand ((double)microtime()*1000000);  
10.     $max = $length/2;  
11.     for($i=1; $i<=$max; $i++)  
12.     {  
13.     $password.=$conso[rand(0,19)];  
14.     $password.=$vocal[rand(0,4)];  
15.     }  
16.     return $password;  
17. }  

2. Generate a Random String

If you don’t need human readable string, then use this function instead, which will create a random string you can use for user id’s etc.
- See more at: http://webdeveloperplus.com/php/21-really-useful-handy-php-code-snippets/#sthash.LZvg1zMi.dpuf