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  1. <?php
  2. $a = 1;
  3.  
  4. $b = function() use ($a) {  
  5.  
  6.     function c()
  7.     {
  8.         global $a;
  9.         $a++;
  10.         echo("C: ".$a . '</br>');
  11.     }
  12.  
  13.     echo($a . '</br>');
  14.     c();
  15.     echo($a . '</br>');
  16. };
  17.  
  18. $b();
  19. echo( "At end: ". $a);
  20. ?>
  21.  
Success #stdin #stdout 0.02s 24228KB
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1</br>C: 2</br>1</br>At end: 2
https://ideone.com/5Xryte
language:
PHP (php 7.3.5)
created:
4 years ago
visibility:
public

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