Regular Expression reverter, generates a string that match the provided regular expression
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.

Regex reverse

Latest Version Software License Build Status Coverage Status Quality Score

Regular expression reverter, generates a string from the given regular expression.


Via Composer

$ composer require niklongstone/regex-reverse:'^0.4.0'


require ('vendor/autoload.php');
use RegRev\RegRev;

echo RegRev::generate('\d'); //ouput a random number

For a list of useful regular expression, please visit: Awesome PCRE

Supported expressions

Character classes

Expression Description Result
\d digit a number
\D non digit an alpha char
\w word a alphanumeric char
\W non word a non alphanumeric char
\s space a blank space
\S non space a non blank space

Conditional and subgroup

Expression Description Example Result
() subgroup (\d\w)+@ 97a987Ss@
(a b) alternation (a
* zero or more \d* 123502
+ one or more \d+ 32133
? zero or one \d? 3
{n} {n,} {n,m} from n to m times \w{1,3} np


Expression Description Result
[0-9] range 0 to 9 7
[a-d] range a to b b
[0-9c-f] range 0-9 or c-f d
[ab5.] chars in list b
[^ab5.] chars not in list 8


Expression Result Description
2\d{2}-\d{3}-\d{4} 212-686-1234 US phone number
\(\d{3}\)\s\d{7} (957) 7583632 phone with area code
\w+@\w+\.\D{2,3} email
www\.\w+\.com URL
192\.\d{3}.255.\d{1,3} Ip address
\D{3,7}\s\D{2}\s\d{2,5} mslchvi Rr 861 US address
<TAG\s.*>.*?<\/TAG> <TAG fNol>ZPXApG</TAG> TAG
004[0-9] \d{7,10} 0044 75132145 europe phone
SE[1-9]{1}\d{1}\s[A-Z]{2}\d{2} SE27 GU35 london SE post code
SE[1-9]{1}\d{1}\s[A-Z]{2}\d{2} SE27 GU35 london SE post code
organi[sz]e organise or organize US or UK spelling

Other features

  • debug: RegRev::debug() will return an array of messages


Please see CONTRIBUTING for details.



The MIT License (MIT). Please see License File for more information.