<?php
// your code goes here<?php
class valida {
protected $cpf;
public function cpf($cpf) {
if ($cpf && strlen($cpf) == 11) { $this->$cpf = $cpf;
return $this->$cpf;
}
}
}
class manda extends valida {
function foo($cpf) {
$cpf = cpf($cpf);
}
}
$cpf1 = $_GET['cpf'];
$sis = new manda;
echo $sis->cpf($cpf1);
PD9waHAKCi8vIHlvdXIgY29kZSBnb2VzIGhlcmU8P3BocApjbGFzcyB2YWxpZGEgewoJcHJvdGVjdGVkICRjcGY7CnB1YmxpYyBmdW5jdGlvbiBjcGYoJGNwZikgewogICAgaWYgKCRjcGYgJiYgc3RybGVuKCRjcGYpID09IDExKSB7CiAgICAgICAgJHRoaXMtPiRjcGYgPSAkY3BmOwogICAgICAgIHJldHVybiAkdGhpcy0+JGNwZjsKICAgIH0KfQoKfQpjbGFzcyBtYW5kYSBleHRlbmRzIHZhbGlkYSB7CglmdW5jdGlvbiBmb28oJGNwZikgewoJCSRjcGYgPSBjcGYoJGNwZik7Cgl9Cn0KCiRjcGYxID0gJF9HRVRbJ2NwZiddOwoKJHNpcyA9IG5ldyBtYW5kYTsKZWNobyAkc2lzLT5jcGYoJGNwZjEpOw==