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  1. <?php
  2.  
  3. $internal_message = 'Hey, this is awesome!';
  4.  
  5. $words = array(
  6.     'wesome' => 'wful',
  7.     'wful' => 'wesome',
  8.     'this' => 'that',
  9.     'that' => 'this'
  10. );
  11. $rx = '~(?:' . implode("|", array_keys($words)) . ')\b~';
  12. echo "$rx\n";
  13. $message = preg_replace_callback($rx, function($m) use ($words) {
  14. 	return isset($words[$m[0]]) ? $words[$m[0]] : $m[0];
  15. }, $internal_message);
  16. echo $message;
Success #stdin #stdout 0s 82624KB
comments (?)
stdin 
Standard input is empty
stdout 
~(?:wesome|wful|this|that)\b~
Hey, that is awful!
https://ideone.com/MQ1BTK
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
secret

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