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  1. <?php
  2.  
  3. $s = "UA30230983A012";
  4. echo preg_replace('~(.*)([A-Z])~s','$1-$2',$s);
Success #stdin #stdout 0.01s 82944KB
comments (?)
stdin 
Standard input is empty
stdout 
UA30230983-A012
https://ideone.com/0fy5Au
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
secret

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