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  1. <?php
  2.  
  3.     $toDecode = "Hello,\\x20World\\x21\\x20How\\x20are\\x20you\\x3F"; //file_get_contents('hex.txt');
  4.  
  5.     function escapedHexToHex($escaped)
  6.     {
  7.       // return 'OK!';
  8.       return chr(hexdec($escaped[1]));
  9.     }
  10.  
  11.     $decoded = preg_replace_callback('/\\\\x([a-f0-9]{2})/i','escapedHexToHex', $toDecode);
  12.  
  13.     echo $decoded; //file_put_contents('haha.txt', $decoded);
Success #stdin #stdout 0.02s 13112KB
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Standard input is empty
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Hello, World! How are you?
https://ideone.com/U16Je
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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