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  1. <?php
  2.  
  3. $json = '{
  4.     "title1": {
  5.         "key1": "value1",
  6.         "key2": "value2",
  7.         "key3": "value3"
  8.     },
  9.     "title2": {
  10.         "key1": "value1",
  11.         "key2": "value2",
  12.         "key3": "value3"      
  13.     }
  14. }';
  15.  
  16. $decodificado = json_decode($json);
  17.  
  18. if (!$decodificado) {
  19.     die('JSON invalido');
  20. }
  21.  
  22. //$title pega o title1 e title2, title3, etc
  23. foreach ($decodificado as &$title) {
  24.  
  25. 	//$value pega o valor key1, key3, key3, key4, etc
  26. 	foreach ($title as $key => &$value) {
  27.  
  28. 		//Aqui um exemplo para alterar as chaves com nome key2 e key3 apenas
  29. 		if ($key === 'key2') {
  30. 			$value = rand(0, 100);
  31. 		} elseif ($key === 'key3') {
  32. 			$value = rand(200, 300);
  33. 		}
  34. 	}
  35. }
  36.  
  37. print_r($decodificado);
  38.  
Success #stdin #stdout 0.02s 23664KB
comments (?)
stdin 
Standard input is empty
stdout 
stdClass Object
(
    [title1] => stdClass Object
        (
            [key1] => value1
            [key2] => 21
            [key3] => 259
        )

    [title2] => stdClass Object
        (
            [key1] => value1
            [key2] => 36
            [key3] => 206
        )

)
https://ideone.com/sSml1W
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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