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  1. <?php
  2.  
  3. $code = "function lol()
  4. {
  5.     echo('omg');
  6.     num=0;
  7.     while(num<100)
  8.     {
  9.         echo('ok');
  10.     }
  11. }
  12.  
  13. function teste()
  14. {
  15.     echo('ola');
  16.     while(num<100){
  17.     echo('ok');
  18.     }
  19. }
  20. function test()
  21. {
  22.     echo('oi');
  23.     while(num<100)
  24.     {
  25.         echo('ok');
  26.     }
  27. }";
  28.  
  29. $result = preg_replace_callback('#(.*?)\{((?:[^{}]|(?R))*)\}|.*#si', function($m){
  30. 	if(isset($m[1], $m[2]) && preg_match('#function\s+teste\b#i', $m[1])){
  31. 		return $m[2];
  32. 	}
  33. }, $code);
  34.  
  35. echo $result;
  36. ?>
Success #stdin #stdout 0.01s 20616KB
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Standard input is empty
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    echo('ola');
    while(num<100){
    echo('ok');
    }
https://ideone.com/7ifEtz
language:
PHP (php 7.3.5)
created:
12 years ago
visibility:
public

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