note 69366 deleted from function.is-numeric by cmb
| From: | cmb@php.net | Date: | Sun, 23 Jun 2019 10:35:42 +0000 |
| Subject: | note 69366 deleted from function.is-numeric by cmb | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-211351@lists.php.net to get a copy of this message | ||
Note Submitter: ja at krystof dot org
----
Here is a simple function to recognize whether the value is a natural number: (Zero is often exclude
from the natural numbers, that's why there's the second parameter.)
<?php
function is_natural($val, $acceptzero = false) {
$return = ((string)$val === (string)(int)$val);
if ($acceptzero)
$base = 0;
else
$base = 1;
if ($return && intval($val) < $base)
$return = false;
return $return;
}
?>