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  1. <?php
  2. echo preg_replace('/(.)(.)?/u', '$2', 'а'), PHP_EOL;
  3. echo preg_replace('/(.)(.)?/u', '$2', 'аб'), PHP_EOL;
  4. echo preg_replace('/(.)(.)?/u', '$2', 'абв'), PHP_EOL;
  5. echo preg_replace('/(.)(.)?/u', '$2', 'абвг'), PHP_EOL;
  6. echo preg_replace('/(.)(.)?/u', '$2', 'абвгд'), PHP_EOL;
  7. echo preg_replace('/(.)(.)?/u', '$2', 'абвгде'), PHP_EOL;
Success #stdin #stdout 0s 82944KB
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stdin
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Standard input is empty
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б
б
бг
бг
бге
https://ideone.com/l7xM36
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language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

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