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    Checks if variable of specified type exists
    Filter Functions
    PHP Manual

    filter_has_var

    (PHP 5 >= 5.2.0, PECL filter:0.11.0)

    filter_has_var — Checks if variable of specified type exists

    Description

    bool filter_has_var ( int $type , string $variable_name )

    Parameters

    type

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

    variable_name

    Name of a variable to check.

    Return Values

    Returns TRUE on success or FALSE on failure.

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