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  1. <?php
  2.  
  3. $pethu = [
  4.     "petya" => 1,
  5.     "nemyx" => null,
  6.     "3.14159265" => 0,
  7. ];
  8. var_dump(isset($pethu["petya"]));
  9. var_dump(isset($pethu["nemyx"]));
  10. var_dump(isset($pethu["3.14159265"]));
  11. var_dump(isset($pethu["3_dar"]));
Success #stdin #stdout 0.02s 24176KB
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Standard input is empty
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bool(true)
bool(false)
bool(true)
bool(false)
https://ideone.com/V0xd4K
language:
PHP (php 7.3.5)
created:
3 years ago
visibility:
public

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