filter_has_var

    (PHP 5 >= 5.2.0, PHP 7, PHP 8)

    filter_has_var — Checks if variable of specified type exists

    Description

    filter_has_var(int $input_type, string $var_name): bool

    Parameters

    input_type

    One of INPUT_GET, INPUT_POST, INPUT_COOKIE, INPUT_SERVER, or INPUT_ENV.

    var_name

    Name of a variable to check.

    Return Values

    Returns true on success or false on failure.

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