Checking a dropdown box

3 New Member

Hi everyone,

I have made a script that checks if content is entered in the html boxes and if the required fields are empty, their border lights red.
This all works, but if I try to make a required field of a drop down box I can't get it working -_-

Expand|Select|Wrap|Line Numbers

 
<html>

<head>

<style type="text/css">

.forgotten {

    border: 1px solid #ff0000;

}

</style>

</head>

<body>

<?php

    //----- function to check required fields

    function CheckRequired($array)

    {

        //----- check if $array is not empty

        if (!empty($array))

        {

            //----- loop through the array and check if the value's been set

            foreach ($array as $value)

            {

                if (empty($_POST[$value]))

                    $form_error[] = $value;

            }

        }
 
        //--- return an array with missed fields

        return $form_error;

    }
 
    //----- check for required fields

    if ($_SERVER['REQUEST_METHOD'] == "POST")

        $required_fields = CheckRequired(array('title', 'omschrijving'));
 
    //----- check if all required fields are entered

            if ($_SERVER['REQUEST_METHOD'] == "POST" && empty($required_fields)) 

    {

        echo "Verwerk formulier<br>";

        echo "<u>Categorie:</u> " . $_POST['categorie'] . "<br>";

        echo "<u>Title:</u> " . $_POST['title'] . "<br>";

        echo "<u>Omschrijving:</u> " . $_POST['omschrijving'] . "<br>";

    }

    else

    {

        //----- if form's been posted before, there are some fields left undone

        if (!empty($required_fields))

        {

            $i = 1;

            foreach ($required_fields as $value)

            {

                // echo "U forgot the field: " . ucfirst($value) . ".<br />";

                $varname = "class_" . $value;

                ${$varname} = "class=forgotten";
 
                $i++;

            }

        }
 
    echo "<form name=\"form\" method=\"POST\" action=\"" . $_SERVER['PHP_SELF'] . "\">";        

    echo "<table>";

    echo "<tr>";

        echo "<td>Categorie:</td>";            

        echo "<td><select name=\"categorie\">";    

             echo "<option value=\"0\">Kies</option>";    

            echo "<optgroup label=\"HTML\">";

            echo "<option value=\"1\">HTML</option>";

            echo "</optgroup>";
 
            echo "<optgroup label=\"CSS\">";

            echo "<option value=\"2\">CSS</option>";

            echo "</optgroup>";
 
            echo "<optgroup label=\"PHP\">";

            echo "<option value=\"3\">PHP</option>";

            echo "<option value=\"4\">Databases</option>";

            echo "<option value=\"5\">OOP</option>";

            echo "</optgroup>";
 
            echo "<optgroup label=\"Design\">";

            echo "<option value=\"6\">Photoshop</option>";

            echo "</optgroup>";            
 
            echo "<optgroup label=\"Programma's\">";

            echo "<option value=\"7\">Programma's</option>";

            echo "</optgroup>";
 
            echo "<optgroup label=\"Besturingssystemen\">";

            echo "<option value=\"8\">Linux</option>";

            echo "<option value=\"9\">Windows</option>";

            echo "<option value=\"10\">Mac</option>";

            echo "</optgroup>";

            echo "</select>";

        echo "</td>";

    echo "</tr>";

    echo "<tr>";

        echo "<td>Titel:</td>";

         echo "<td><input type=\"text\" name=\"title\" width=\"50\" maxlength=\"60\" value=\"" . htmlentities($_POST['title']) . "\" " . $class_title . " /><br></td>";

    echo "</tr>";

    echo "<tr>";

        echo "<td>Omschrijving (inleiding): &nbsp;&nbsp;</td>";

         echo "<td><textarea rows=\"5\" cols=\"50\" name=\"omschrijving\" value=\"" . htmlentities($_POST['omschrijving']) . "\" " . $class_omschrijving . " /></textarea></td>";

    echo "</tr>";

    echo "<tr><td><input type=\"submit\" name=\"submit\" value=\"Verzenden\"><td></tr>";            

     echo "</table>";

    echo "</form>";
 
    }

?>

</body>

</html>

I hope you all can try to help me out, I'm searching a sullution for more then 2 hours.
Greetings,
Reinhout

Aug 14 '07 #1

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2335

kovik

1,044

Recognized Expert Top Contributor

This all works, but if I try to make a required field of a drop down box I can't get it working -_-

What part doesn't work? Drop down selections aren't like regular text inputs. You can't style them like you can style input boxes, and I'm 90% sure that included borders as well. Also, a drop down selection box always has a default value, so there will always be a posted value. To check if it's been set, you'd need to create a default selection whose value was an empty string, and check it with the empty() function.

Note that I haven't read your code and don't plan to until you are more specific about what the problem is and where it occurs.

Aug 14 '07 #2

Dreea

New Member

i am not so sure, but i think this is what is happening :
the function that checks if required fields are filled is checking whether a certain variable is not empty. The variable corresponding to your drop-down list will always have a value(in case nothing is selected, the default value remains selected which has value 0).
hope it helps

Aug 14 '07 #3

reinhout

New Member

I have put an example online:
reinhout.online...

The problem is I need to check if the first selection is selected (wich means nothing has changed) and then I need to change the border color.
Now I know I can't change that border :'(

I could give the first selection the value "null" in place of the "0" now and then check it with empty()

I'll try this right now, problems could follow...

edit: I'm looking for something that can replace the red border..

Aug 15 '07 #4

reinhout

New Member

I have been looking around and red borders are no big deal with drop-down boxes...

Expand|Select|Wrap|Line Numbers

select { border: 1px solid red; }

Now make a code that fits the border

Aug 15 '07 #5

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