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  1. <?php
  2.  
  3. $json = '[
  4. 	{"nome" : "WallaceMaxters"},
  5.    	{"nome" : "Bigown"},
  6.     {"nome" : "Math"}
  7. ]';
  8.  
  9. print_r(json_decode($json, TRUE));
  10.  
  11. $convert = json_decode($json, TRUE);
  12.  
  13. array_walk_recursive($convert, function (&$value /** Não esqueça do & **/)
  14. {
  15.       $value = mb_strtoupper($value, 'UTF-8');
  16. });
  17.  
  18.  
  19. print_r($convert);
  20.  
Success #stdin #stdout 0.02s 52432KB
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Array
(
    [0] => Array
        (
            [nome] => WallaceMaxters
        )

    [1] => Array
        (
            [nome] => Bigown
        )

    [2] => Array
        (
            [nome] => Math
        )

)
Array
(
    [0] => Array
        (
            [nome] => WALLACEMAXTERS
        )

    [1] => Array
        (
            [nome] => BIGOWN
        )

    [2] => Array
        (
            [nome] => MATH
        )

)
https://ideone.com/cYx6Zh
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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