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  1. <?php
  2. class valida {
  3. 	protected $cpf;
  4.  
  5. 	public function cpf($cpf) {
  6. 		if(is_numeric($cpf) and $cpf > 11) {
  7. 			$this->cpf = $cpf;
  8. 			return $cpf;
  9. 		}
  10. 	}
  11.  
  12. }
  13. class manda extends valida {
  14. 	function foo($cpf) {
  15. 		$cpf = cpf($cpf);
  16. 	}
  17. }
  18.  
  19. $cpf1 = $_GET['cpf'];
  20.  
  21. $sis = new manda;
  22. echo $sis->cpf($cpf1);
Success #stdin #stdout #stderr 0.02s 23936KB
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stdin
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Standard input is empty
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Standard output is empty
stderr
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PHP Notice:  Undefined index: cpf in /home/uA2W0y/prog.php on line 19
https://ideone.com/wANBeV
language:
PHP (php 7.3.5)
created:
5 years ago
visibility:
public

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