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# is_null

(PHP 4 >= 4.0.4)

is_null -- Finds whether a variable is `NULL`

## Description

bool is_null ( mixed var)

Returns `TRUE` if `var` is null, `FALSE` otherwise.

See the `NULL` type when a variable is considered to be `NULL` and when not.

See also `NULL`, is_bool(), is_numeric(), is_float(), is_int(), is_string(), is_object(), is_array(), is_integer(), and is_real()

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