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filter_has_var()

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<?php
setcookie
("test_cookie"123null"/");

$bool filter_has_var (
    
?// int $type
    
?  // string $variable_name
);
?>
Result
$bool = false
Examples
#1 filter_has_var  (INPUT_COOKIE,
 
"test_cookie")
#2 filter_has_var  (INPUT_POST,
 
"xyz")