Php Form Control

[GuyInTn]

Hi all,

I am new to php and need a little help. I need to build a form that will either display a text field or not display one depending on a selection from a list box. I need something like:

<select name="dropdown">
<option></option>
<option>Selection 1</option>
<option>Selection 2</option>
</select>

If selection 1 is selected, I need the form to refresh to display a text field below it while keeping the data that has already been filled in.

Can this be done with php? And if so, can someone point me in the right direction?

Thanks.

[AQHost]

Hi,

I don't believe that you can achieve this using PHP as it's a server side technology. This means that your users would have to submit the form before PHP could detect which option had been selected. You will need to use a client side technology such as Javascript.

Best wishes,
Simon.

[philwong]

you will need to use a langauge called Javascript! w00p!

something like the following

<script>

function CheckForm()
{

if(document.formname.dropdown.value == 1)
{
document.location.href= "filename.php?what=show";
}
else
{
document.location.href= "filename.php?what=show";

}

}

</script>

<select name="dropdown" onChange="CheckForm();">
<option></option>
<option value=1>Selection 1</option>
<option value=2>Selection 2</option>
</select>

thats a real quick fix, but be aware that, it wont keep the values, so if you fill out your form, then select an option, your form is going to be blank!

in order to do that, you will need to call something like

document.formname.submit();