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is_null

Description

The is_null of Variable Handling for PHP finds whether a variable is null.

Syntax

is_null(
    mixed $value
): bool

Parameters

value

The variable being evaluated.

Return

Returns true if value is null, false otherwise.

Examples

1 · value · null

<?

$value = null;

$return = is_null($value);

var_export($return);

true

2 · value · does not exist

<?

$return = is_null($value);

var_export($return);

true