is_null

(PHP 4 >= 4.0.4, PHP 5)

is_null --  Finds whether a variable is NULL

Beschreibung

bool is_null ( mixed var )

Finds whether the given variable is NULL.

Parameter Liste

var

The variable being evaluated.

Rückgabewerte

Returns TRUE if var is null, FALSE otherwise.

Siehe auch

The NULL type
is_bool()
is_numeric()
is_float()
is_int()
is_string()
is_object()
is_array()

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Generated: 2007-01-26 17:57:02