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  1. <?php
  2.  
  3. $json = '{
  4.    "result":[
  5.       {
  6.          "type":"Residence",
  7.          "street":"Piazza di Spagna",
  8.          "city":"-4:0"
  9.       },
  10.       {
  11.          "type":"Residence",
  12.          "street":"test",
  13.          "city":"-4:1"
  14.       }
  15.    ]
  16. }';
  17.  
  18. header('Content-Type: text/plain');
  19.  
  20. try {
  21. 	$nodes = getJsonNodes($json);
  22. } catch (\InvalidArgumentException $e) {
  23. 	echo $e->getMessage();
  24. }
  25.  
  26. print_r($nodes);
  27.  
  28.  
  29. function getJsonNodes($json) {
  30. 	$nodes   = array();
  31. 	$decoded = json_decode($json, true);
  32.  
  33. 	if (json_last_error() !== JSON_ERROR_NONE) {
  34. 		throw new \InvalidArgumentException('Invalid JSON String passed to getJsonNodes()');
  35. 	}
  36.  
  37. 	$result = $decoded['result'];
  38. 	if (is_array($result)) {
  39. 		$nodes = array_keys($result[0]);
  40. 	}
  41.  
  42. 	return $nodes;
  43. }
Success #stdin #stdout 0.02s 52472KB
comments (?)
stdin
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Standard input is empty
stdout
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Array
(
    [0] => type
    [1] => street
    [2] => city
)
https://ideone.com/dlvdu2
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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