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  1. <?php
  2.  
  3. $array = array('nullKey' => null);
  4.  
  5. var_dump(isset($array['nullKey'])); // false
  6. var_dump(array_key_exists('nullKey', $array)); // true
Success #stdin #stdout 0.02s 13112KB
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Standard input is empty
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bool(false)
bool(true)
https://ideone.com/bZgihi
language:
PHP (php 7.3.5)
created:
11 years ago
visibility:
public

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