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  1. <?php
  2.  
  3. $conta = "ABCDEFGHIJKLM";
  4.  
  5. echo strlen($conta) > 4 ? substr($conta, -1) : $conta, PHP_EOL;
  6.  
  7. echo strlen($conta) > 4 ? substr($conta, 0, 4) : $conta, PHP_EOL;
Success #stdin #stdout 0.01s 82880KB
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M
ABCD
https://ideone.com/sJSWce
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
public

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