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  1. <?php
  2. $_POST['is_human'] = 0;
  3. var_dump(empty($_POST['is_human']));
  4.  
  5. $_POST['is_human'] = 1;
  6. var_dump(empty($_POST['is_human']));
  7.  
  8. unset($_POST['is_human']);
  9. var_dump(empty($_POST['is_human']));
Success #stdin #stdout 0.01s 52488KB
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stdin
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Standard input is empty
stdout
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bool(true)
bool(false)
bool(true)
https://ideone.com/6QgYXS
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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