note 125654 deleted from language.types.null by cmb
| From: | cmb@php.net | Date: | Tue, 05 Jan 2021 09:10:40 +0000 |
| Subject: | note 125654 deleted from language.types.null by cmb | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-216063@lists.php.net to get a copy of this message | ||
Note Submitter: Anonymous
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Note that if you do math on NULL, it will behave like 0.
echo 1 + NULL;
// 0
$n = NULL;
$n++;
echo $n;
// 1
But wait -- it gets better.
It works even if the variable doesn't exist:
unset($n);
$n++;
echo $n;
// 1