PHP - Form

crazygol4 · #1 11-Sep-2008, 21:35

Okay so I've looked all around on Google and can't find what I'm looking for...check this out ->

I have a standard HTML form where users enter information blah blah blah, and one of these inputs is a drop down menu of all the states. SO that information is sent to a php page that accepts the information, it basically ensures that people didn't forget to fill required fields in, aren't injecting code, and a few more things. If there are any problems it will flag the errors and set headers for the previous page. All the information that was submitted the first time is sent back into the forms so that users don't have to enter it all in again.

THE QUESTION:
How do I send back information to the state DROPDOWN input?

I know that you would use selected as such: <option value="OH" selected="selected">OHIO</option>
BUT, what is the best way to take the value (OH) and use it to select Ohio from the dropdown menu.

Should I just do a php if statement for each option, or is there a better option?

This is my idea right now:

PHP Code:


<option value="OH" selected="<? if($_POST[returnedvalue] == "OH") {
echo "selected"; } ?>">OHIO</option>

admin · #2 11-Sep-2008, 21:57

Perhaps something like this:

PHP Code:


// flags
$flags["option_state_selected"] = ( isset($_POST["state_code"])  &&  $_POST["state_code"] );

foreach( $option_values_states as $state_code=>$state )
{
    $selected = null;
    if( $flags["option_state_selected"] )
    {
        if( $state_code == $_POST["state_code"] )
        {
            $flags["option_state_selected"] = false;
            $selected = " selected=\"selected\"";
        }
    }
    echo "<option value=\"$state_code\"$selected>$state</option>\n";
}

crazygol4 · #3 12-Sep-2008, 15:31

Thanks Mr. Admin

That looks like it's going to do the trick, I'll pop it in when I get back. Now I'm wondering how people achieve real time error checking on forms (ex Facebook)... Is that done with JScript or another lang? Does anyone know where I might find a script to that will bring out an error box (or even just text) to the side if the password (username, etc) doesn't meet criteria?

Thanks,
Crazygol4

admin · #4 13-Sep-2008, 04:20

Yes, a client-side script is something you will need to achieve "real time error checking on forms". The most popular of which is Java Script.

Unfortunately, I am cannot help you with the example JS codes you requested -- I am the world's worst Java Script coder

Try starting a new discussion in the Web Development Forum, maybe a kind and helpful member will pick it up.

crazygol4 · #5 13-Sep-2008, 11:46

Sure enough. Thanks again for all the help!

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