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  1. <?php
  2.  
  3. 	function subtrai_array( $arr1, $arr2 ) {
  4. 		foreach ( $arr2 as $chave => $valor ) {
  5. 		    if( array_key_exists( $chave, $arr1 ) ) {
  6. 		        $arr1[$chave] = $arr1[$chave] - $valor;
  7. 			} else {
  8. 				$arr1[$chave] = -$valor;
  9. 			}
  10. 		}
  11. 		return $arr1;
  12. 	}
  13.  
  14. 	$a1 = Array (
  15. 	    'bife' => 3,
  16. 	    'batata' => 2,
  17. 	    'arroz' => 1,
  18. 		'zóião' => 3
  19. 	);
  20. 	$a2 = Array (
  21. 	    'bife' => 2,
  22. 	    'batata' => 2,
  23. 	    'couve' => 1
  24. 	);
  25. 	print_r( subtrai_array( $a1, $a2 ) );
  26. ?>
Success #stdin #stdout 0.02s 20568KB
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Standard input is empty
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Array
(
    [bife] => 1
    [batata] => 0
    [arroz] => 1
    [zóião] => 3
    [couve] => -1
)
https://ideone.com/xCMEVO
http://pt.stackoverflow.com/questions/32797/
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
secret

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