Generate String from Regexp

Question

I'm curious if there is a way to generate the list of valid options from a regexp... something like this. Any ideas or hints welcome!

I want to do this in my PHP Code where I need to generate each possible outcome. You can see what I'm looking for here: http://uttool.com/text/regexstr/default.aspx

Expression: /(admin|agent)/Cutomers/View

Output Valid Options Array 0] '/admin/Customers/View' 1] '/agent/Customers/View'

Careful what you ask for. This could lead to an exponential output. — S.L. Barth is on codidact.com
– S.L. Barth is on codidact.com, Commented Feb 27, 2015 at 14:05
The expressions are simple OR operations in most cases so the output will be limited. However I need to do this in my code so I'm not sure If I need to write something to parse it or if something already exist. — Amb3rL4nn
– Amb3rL4nn, Commented Feb 27, 2015 at 14:10
Please see stackoverflow.com/questions/776286/…. There is a link to a free web-based "regex by example" generator. — Wiktor Stribiżew
– Wiktor Stribiżew, Commented Feb 27, 2015 at 14:10
I'm not looking on how to generate a regex. I'm looking to generate valid strings from a regex. If you see the site that outputs what I'm looking for. — Amb3rL4nn
– Amb3rL4nn, Commented Feb 27, 2015 at 14:18

miglio · Accepted Answer · 2015-02-27 14:38:58Z

1

i've tried something like this:

function builder($string){
    $strend = explode('/',$string); 
    array_splice($strend,0,2);
    $strend=implode('/',$strend);
    preg_match('/\/(.*?)\//',$string,$m);
    $arr = explode('|',str_replace(array('(',')'),'',$m[1]));
    $resp = array();
    foreach($arr as $v){
        $resp[] = '/'.$v.'/'.$strend;
    }
    return $resp;
}
$str = '/(admin|agent|client)/Customers/View';
var_dump(builder($str));

edited Feb 27, 2015 at 14:38

answered Feb 27, 2015 at 14:30

miglio

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1 Comment

Amb3rL4nn Over a year ago

This works for what I need right now so I will accept it. Plus it can be expanded for slightly more complex expressions. From what I can tell there is not much for a library out there.

Ôrel · Accepted Answer · 2015-02-27 14:04:41Z

0

You can see a graphical representation here https://www.debuggex.com/

/(admin|agent)/Cutomers/View

Regular expression visualization

Debuggex Demo

If you have a dictionnary you can test against your regexp, without it is not possible juste imagine /.*/toto/tutu

answered Feb 27, 2015 at 14:04

Ôrel

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2 Comments

Amb3rL4nn Over a year ago

any idea of a php library or function that would let me do this? I need to do this in my code.

Ôrel Over a year ago

Do what ? Have a dictionary of all url to test against your regexp ?

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