note 9999 deleted from language.functions by felipe
| From: | felipe@php.net | Date: | Tue, 22 Jul 2008 02:58:31 +0000 |
| Subject: | note 9999 deleted from language.functions by felipe | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-142472@lists.php.net to get a copy of this message | ||
Note Submitter: php-general at list dot php dot net
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If a user-defined function does not explicitly return a value, then it
will return NULL. For most truth tests, this can be considered as FALSE.
For example:
function print_list ($array)
{
print implode ("<br />", $array);
}
if (print_list ($HTTP_POST_VARS))
print "The print_list function returned a value that can be considered true."
else
print "The print_list function returned a value that can be considered false."