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  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
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stdin
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Standard input is empty
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array(1) {
  [0]=>
  string(1) "."
}
https://ideone.com/Zv95A2
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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