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  1. <?php
  2.  
  3. $line = "=32";
  4. echo preg_replace_callback("/=([0-9A-F][0-9A-F])/", function($m) { return chr(hexdec($m[1])); }, $line);
  5.  
Success #stdin #stdout 0s 82944KB
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stdin 
Standard input is empty
stdout 
2
https://ideone.com/yuH1zw
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
secret

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