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  1. <?php
  2.  
  3. $str = chunk_split("AAAAABBBBBCCCCCDDDDD", 5, '.');
  4.  
  5. var_dump($str);
Success #stdin #stdout 0.01s 20520KB
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Standard input is empty
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string(24) "AAAAA.BBBBB.CCCCC.DDDDD."
https://ideone.com/eH5QL1
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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