NULL

The special NULL value represents that a variable has no value. NULL is the only possible value of type NULL.

Nota: The null type was introduced in PHP 4.

A variable is considered to be NULL if

Syntax

There is only one value of type NULL, and that is the case-insensitive keyword NULL.

<?php
$var
= NULL;       
?>

See also is_null() and unset().

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Generated: 2007-01-26 17:56:36