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  1. <?php
  2.  
  3. $text = "Hello there {{{name}}}!\nDid you try to {{{hack}}} me?";
  4.  
  5. $pattern = '/{{{([a-zA-Z_]+)}}}/';
  6.  
  7. $text = preg_replace_callback($pattern, 'produce_replacement', $text);
  8. echo $text;
  9.  
  10. function produce_replacement($match) {
  11.     $producerName = 'evaluate_'.strtolower($match[1]);
  12.     return function_exists($producerName) ? $producerName() : null;
  13. }
  14.  
  15. function evaluate_name() {
  16.     return "Joe";
  17. }
  18.  
Success #stdin #stdout 0.02s 13112KB
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stdin
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Standard input is empty
stdout
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Hello there Joe!
Did you try to  me?
https://ideone.com/LD2uq
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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