Re: Required fields in a form?
| From: | Joe Stump | Date: | Fri, 13 Oct 2000 23:51:04 +0000 |
| Subject: | Re: Required fields in a form? | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-20107@lists.php.net to get a copy of this message | ||
$required = array('fname','lname','wphone');
// f is your form array - so inputs would be
// named f[fname], f[lname], f[wphone]
function check_for_errors($f){
while(list($key,$val) = each($f)){
if(!strlen($val) && in_array($key,$required)){
$errors[$key] = '**Required';
}
}
if(is_array($errors)){
return $errors;
}else{
return 0;
}
}
if(strlen($f['button']) && !($errors = check_for_errors($f))){
// add a line
}
--Joe
On Fri, Oct 13, 2000 at 04:33:45PM -0700, Erica Douglass wrote:
> I am trying to build a form that checks if certain required fields are
> filled out. Not all fields are required, hence my problems.
>
> The form calls from a table called "form_fields" that, very simplified,
> looks like this:
>
> field_name | required
> __________________________
> fname | yes
> lname | yes
> wphone | no
>
> The form is pulled from the same table. Form value names are evaluated as
> field_name from the database. Hence, a text field asking for the user's
> first name looks like this when initially called from the database: <input
> type="text" name="fname" size="30" value="">
>
>
>
> The code I am using to check for required fields looks like this:
>
> # check to make sure required fields are filled in
> $query = "select field_name from form_fields where required=\"yes\"";
> $result = mysql_query ($query) or die ("The server is down. Here's what
> MySQL said: " . mysql_error());
> $required_fields = mysql_fetch_array($result);
> while(list($key,$val) = each($required_fields)) {
> if ($HTTP_POST_VARS[$key] == "") {
> echo "$key is blank!";
> }
> else {
> echo "$key is not blank!";
> };
> };
>
> I am using the echo statements as placeholders for now.
>
> This code, when put to use, gives back the following output (regardless of
> whether the form fields are actually blank or not):
>
> 0 is blank!field_name is blank!
>
> What on earth am I doing wrong? I have a feeling that I have the right
> idea, but that my code is off. Please help! :)
>
> Erica
>
>
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