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  1. <?php
  2.  
  3. $var = 'UA30230983A012';
  4. echo preg_replace('/[a-z][^a-z]*$/i', 'a$0', $var) . "\n";
  5.  
  6. $var = 'FK903980232P00';
  7. echo preg_replace('/[a-z][^a-z]*$/i', 'a$0', $var) . "\n";
  8.  
Success #stdin #stdout 0.01s 83520KB
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stdin
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Standard input is empty
stdout
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UA30230983aA012
FK903980232aP00
https://ideone.com/Uyina1
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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