note 22218 added to function.is-nan
| From: | paul at NOSPAM dot paultastic dot com | Date: | Tue, 11 Jun 2002 03:57:34 +0000 |
| Subject: | note 22218 added to function.is-nan | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-31684@lists.php.net to get a copy of this message | ||
See is_numeric if you have an older version of PHP than 4.20. It should serve your purpose well
(negate the output).
If you're using PHP 3, you can use a regular expression:
function isNaN( $var ) {
return !ereg ("^[0-9\.]+$", $var);
}
--
http://www.php.net/manual/en/function.is-nan.php
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