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  1. <?php
  2.  
  3. $a = [1, 2, 3];
  4.  
  5. foreach ($a as $k => &$v) {
  6. 	$v *= 2; 
  7. }
  8.  
  9.  
  10. var_dump($a); // Tudo normal, 
  11.  
  12.  
  13. $v = null;
  14.  
  15.  
  16. var_dump($a);
Success #stdin #stdout 0s 52488KB
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Standard input is empty
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array(3) {
  [0]=>
  int(2)
  [1]=>
  int(4)
  [2]=>
  &int(6)
}
array(3) {
  [0]=>
  int(2)
  [1]=>
  int(4)
  [2]=>
  &NULL
}
https://ideone.com/aeTRxg
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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