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  1. <?php
  2.  
  3. $test = array(
  4. 	(object) [
  5. 		'pais' => 'Brasil',
  6. 		'principal' => 1,
  7. 	],
  8. 	(object) [
  9. 		'pais' => 'Brasil',
  10. 		'principal' => 0,
  11. 	],
  12. 	(object) [
  13. 		'pais' => 'Brasil',
  14. 		'principal' => 1,
  15. 	],
  16. 	(object) [
  17. 		'pais' => 'Brasil',
  18. 		'principal' => 0,
  19. 	]
  20. );
  21. $keys = [];
  22. foreach($test as $k => $v) {
  23. 	if($v->principal === 1)
  24. 		$keys[] = $k;
  25. }
  26. print_r($keys);
  27.  
  28.  
  29.  
Success #stdin #stdout 0.02s 24408KB
comments ()
stdin
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Standard input is empty
stdout
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Array
(
    [0] => 0
    [1] => 2
)
https://ideone.com/MhLqEZ
language:
PHP (php 7.3.5)
created:
4 years ago
visibility:
public

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