outputting selected option

hwttdz

Given a dropdown form how can I output the selected option when the submit button is pressed.

Box: [red ] [submit]

[green ]
[blue ]
[orange]

so the user selects an option from the dropdown menu, which is highlited then they press submit, I want to display red, green, blue or orange, whatever was submitted.

Installer

This script will demonstrate:

if (!isset($_POST['submit'])) {
    echo '<form action="' . $_SERVER['PHP_SELF'] . '" method="post">
          <select name="color">
          <option value="red">red</option>
          <option value="green">green</option>
          <option value="blue">blue</option>
          <option value="orange">orange</option>
          </select>
          <input type="submit" name="submit" value="submit" />
          </form>';
} else {
    echo $_POST['color'];
}

hwttdz

Thanks that helped.

Why is it displaying a color=# in the address bar. I thought that happened if you used get. I have a large number of these menus and if each adds a color=# the address it will be over the limit. Is there a way to stop that from being added to the address but still pass on the data?

Installer

It shouldn't be adding anything to the url. Are you running the code in a script by itself, i.e., not with any other code in the script?

hwttdz

Ok it's not doing anything anymore. I've made a number of changes since though so I don't know exactly what caused that behavior.

gtoerner

This is helpful, but how do I display the selected "display" instead of the "value"? In other words, suppose we change the code above to this...

if (!isset($POST['submit'])) {
echo '<form action="' . $SERVER['PHP_SELF'] . '" method="post">
<select name="color">
<option value="1">red</option>
<option value="2">green</option>
<option value="3">blue</option>
<option value="4">orange</option>
</select>
<input type="submit" name="submit" value="submit" />
</form>';
} else {
echo $_POST['color'];
}

Then the display from echo $_POST['color']; will return a 1, 2, 3 or 4; but instead I want to display the chosen named colors: red, green, blue, or orange.

How do I do this?

dagon

set the value to red,green, etc.

<option value="red">red</option>

if you need id, and colour:

<?php
$colour = array(1 => 'red',2 => 'green',3 => 'blue');

if(!isset($_POST['submit'])){
	echo '<form action="'.$_SERVER['PHP_SELF'].'" method="post">
<select name="color">';

foreach($colour as $k => $v){
	echo '<option value="'.$k.'">'.$v.'</option>';
}

echo '
</select>
<input type="submit" name="submit" value="submit" />
</form>';
}else{
	echo 'colour is '.$colour[$_POST['color']];
	echo 'colour id is '.$_POST['color'];

}

?>

gtoerner

Perfect, thanks!!!! yes it was the id and color array pair I was looking for.