note 9689 added to is_numeric
| From: | zak@php.net | Date: | Sun, 19 Nov 2000 09:13:34 +0000 |
| Subject: | note 9689 added to is_numeric | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-7886@lists.php.net to get a copy of this message | ||
If you are testing a string with is_numeric(), the string must not contain *any* non-numeric data.
If it does, is_numeric() will return false.
For example:
is_numeric ("1.21E-100"); // Returns true
is_numeric ("19 Nov 00"); // Returns false
http://www.php.net/manual/function.is-numeric.php