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  1. <?php
  2.  
  3. $old_v = "aaaggggoooaooogg";
  4. echo preg_replace("/(.)\\1+/", "$1", $old_v);
Success #stdin #stdout 0.01s 52488KB
comments (?)
stdin 
Standard input is empty
stdout 
agoaog
https://ideone.com/g4gpQw
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
secret

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