(PHP 5 >= 5.2.0, PHP 7, PHP 8)
filter_has_var — Checks if a variable of the specified type exists
filter_has_var(int $input_type, string $var_name): bool
input_type One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, or INPUT_ENV.
var_nameName of a variable to check.
© 1997–2025 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.filter-has-var.php