Re: Looping through variables
| From: | Dan Lowe | Date: | Tue, 24 Apr 2001 06:04:09 +0000 |
| Subject: | Re: Looping through variables | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-50014@lists.php.net to get a copy of this message | ||
Previously, Ashley M. Kirchner said:
>
> I have a bunch of variables (through a POST form) that I need to
> loop through and check for content. Right now, each one is being
> evaluated separately:
>
> if ($var1 == '') {
> $url .= "&var1=";
> $error = 1;
> } else {
> $url .= "&var1=".urlencode(stripslashes($var1))."";
> }
>
> Then repeat for $var2, $var3, etc., etc...
>
> Is there a better way of doing this looping instead of writing the
> same routine over and over again?
// List of variable names
$var_list = array ( 'var1', 'var2', 'var3', 'var4' );
while (list($key,$val) = each($var_list)) {
if ($$val == '') {
$url .= "&".$val."=";
$error = 1;
} else {
$url .= "&".$val."=". urlencode(stripslashes($$val))
."";
}
}
Of course, if this is all POST variables then you should be able to just
use the pre-built array $HTTP_POST_VARS (if track_vars is on). Then you'd
do something like this instead:
while (list($key,$val) = each($HTTP_POST_VARS)) {
if ($val == '') {
$url .= "&".$key."=";
$error = 1;
} else {
$url .= "&".$key."=".urlencode(stripslashes($val))."";
}
}
If you're using GET rather than post, just subtitute $HTTP_GET_VARS.
-d
--
If a man is standing in the middle of the forest speaking and there is
no woman around to hear him... is he still wrong? -George Carlin