fork(1) download 
  1. <?php
  2.  
  3. // your code goes herenew String(new char[n]).matches(".?|(..+?)\\1+")
  4.  
  5.  
  6. $str = str_repeat('.', 7);
  7.  
  8.  
  9. $pattern = '/.?|(..+?)\\1+/';
  10.  
  11. if (!preg_match($pattern, $str, $matches)) {
  12. 	echo 'matching', "\r\n";
  13. }
  14.  
  15. var_dump($matches);
Success #stdin #stdout 0.01s 20520KB
comments (?)
stdin 
Standard input is empty
stdout 
array(1) {
  [0]=>
  string(1) "."
}
https://ideone.com/Zv95A2
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!