PHP component that generares random string from regex [closed]

Question

I am searching for PHP component that generates random string from regex. I've searched through this forum, but found only PERL etc. solutions (Random string that matches a regexp). Is there such an open source class?

Answer 1

A library called ReverseRegex can be found here.
As of January 2014 the project seems not to be dead.

Usage seems to be as simple as

$lexer = new  Lexer('[a-z]{10}');
$gen   = new SimpleRandom(10007);
$result = '';

$parser = new Parser($lexer,new Scope(),new Scope());
$parser->parse()->getResult()->generate($result,$gen);

echo $result;

Give it a regex, give it a random seed and generate your string.
The above example, taken from the github-site, generates a ten character long random string consisting only of letters.

(originally found in this answer)

Answer 2

I'm not familiar I wasn't (until now) familiar with any php libraries that can do this, and converting something like xeger would be a tremendous undertaking.

Instead, you could simply do something like this:

function random($length)
{
    $random_string = "";
    $valid_chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()_+-=[]{}\\|";

    $num_valid_chars = strlen($valid_chars);

    for ($i = 0; $i < $length; $i++)
    {
        $random_pick = mt_rand(1, $num_valid_chars);
        $random_char = $valid_chars[$random_pick-1];
        $random_string .= $random_char;
    }
    return $random_string;
}

echo random(20); //generates a random string, 20 characters long.