Re: isset
| From: | Jochem Maas | Date: | Sun, 15 Apr 2007 01:48:47 +0000 |
| Subject: | Re: isset | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-252957@lists.php.net to get a copy of this message | ||
Richard Kurth wrote:
> What do you do when isset does not work? If I send data in a
> $_REQUEST['var'] like
> if (isset($_REQUEST['var'])) {
> }
> Put var has no data it still says it is set. Because $_REQUEST['var'] = ""
> and isset thinks "" is set
php -r ' $r = array("foo" => "");
var_dump(isset($r["foo"]),empty($r["foo"]));'
so empty() should give you the result your looking for ...
some tips:
1. generally use $_GET or $_POST in preference to $_REQUEST
2. be specific about your input validation, e.g.:
if (isset($_GET['var']) && ($_GET['var'] == 'foo')) {
echo "got it!";
}
>