is_null

osbo.com | PHP | Functions | is_null

Finds whether a variable is NULL

is_null ( mixed $var ) : bool

var

The variable being evaluated.

Returns TRUE if var is null, FALSE otherwise.

<?

$var = null;

$return = is_null($var);

echo $return;

?>

1

<?

// $var does not exist

$return = is_null($var);

echo $return;

?>

1

PHP